Pub Date : 2021-12-14DOI: 10.1080/00173134.2021.1990399
Ha-na Choi, S. Mitsuyama, Kweon Heo
Abstract The genus Kirengeshoma, in the family Hydrangeaceae, is considered by some botanists to be monotypic while others divide it into two species, K. palmata, native to Japan and China, and K. koreana, native to South Korea. We have conducted a comparative pollen morphological study of five populations of the two putative species to investigate this question. Pollen morphological characteristics were observed with scanning and transmission electron microscopy. The pollen characteristics of all five populations were similar. All populations dispersed pollen as the monad and the pollen grain shape were either spheroidal or sub-spheroidal and approximately 12 to 18 µm in diameter, falling in the small grain category. In all five populations, the pollen grains were iso-polar and radio-symmetrical, with tri-colporate apertures. Additionally, pollen surface sculpture patterns of all populations were semi-tectate and reticulate. As a result, the two putative species differed in that the pollen grains of K. palmata were smaller, and their endexine slightly thicker, than those of K. koreana. Despite these differences, we conclude that the similar pollen morphology of all the populations does not support separating them into two independent species. However, different species of angiosperms often have similar pollen morphology. Therefore, we suggest that the genus should be considered to consist of these two independent species unless further morphological or molecular evidence to the contrary is forthcoming.
{"title":"Comparative pollen morphology of the Kirengeshoma (Hydrangeaceae)","authors":"Ha-na Choi, S. Mitsuyama, Kweon Heo","doi":"10.1080/00173134.2021.1990399","DOIUrl":"https://doi.org/10.1080/00173134.2021.1990399","url":null,"abstract":"Abstract The genus Kirengeshoma, in the family Hydrangeaceae, is considered by some botanists to be monotypic while others divide it into two species, K. palmata, native to Japan and China, and K. koreana, native to South Korea. We have conducted a comparative pollen morphological study of five populations of the two putative species to investigate this question. Pollen morphological characteristics were observed with scanning and transmission electron microscopy. The pollen characteristics of all five populations were similar. All populations dispersed pollen as the monad and the pollen grain shape were either spheroidal or sub-spheroidal and approximately 12 to 18 µm in diameter, falling in the small grain category. In all five populations, the pollen grains were iso-polar and radio-symmetrical, with tri-colporate apertures. Additionally, pollen surface sculpture patterns of all populations were semi-tectate and reticulate. As a result, the two putative species differed in that the pollen grains of K. palmata were smaller, and their endexine slightly thicker, than those of K. koreana. Despite these differences, we conclude that the similar pollen morphology of all the populations does not support separating them into two independent species. However, different species of angiosperms often have similar pollen morphology. Therefore, we suggest that the genus should be considered to consist of these two independent species unless further morphological or molecular evidence to the contrary is forthcoming.","PeriodicalId":50414,"journal":{"name":"Grana","volume":"61 1","pages":"124 - 131"},"PeriodicalIF":0.9,"publicationDate":"2021-12-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48431323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-11-11DOI: 10.1080/00173134.2021.1976825
M. Sevindik, H. Akgül, A. Tosunoglu
Abstract The present study aimed to determine the fungal spores and their concentrations in the atmosphere of Mardin (southeast Turkey) in 2014 and 2015 using the volumetric method. A total of 43 taxa, hyphal fragments, and single septate ascospores were identified by light microscopy. It was determined that the dominant fungal spores included Cladosporium (51.5%), Ustilaginales species spores (13.9%), Alternaria (6.9%), Pucciniales species spores (1.6%), Agrocybe (1.2%), Pleospora (1.1%) and hyphal fragments (15.5%). The highest atmospheric spore concentrations were observed in May and the lowest levels were determined in February in both years. Dry air spores constituted a significant ratio of the total count (73.9%) in the atmosphere of Mardin. There were significant positive correlations between atmospheric concentrations of Alternaria, Cladosporium, Ustilaginales, and Pucciniales spores and temperatures. There were significant negative correlations between airborne fungal spore concentrations and daily mean humidity. There was a significant negative correlation between Agrocybe spore concentrations and daily mean temperature and a significant positive correlation between the same and humidity and precipitation. No significant correlation was determined between the meteorological variables and Pleospora and Aspergillus/Penicillium spore concentrations.
{"title":"Temporal variations in fungal spores in Mardin city atmosphere, upper Mesopotamia, SE-Turkey","authors":"M. Sevindik, H. Akgül, A. Tosunoglu","doi":"10.1080/00173134.2021.1976825","DOIUrl":"https://doi.org/10.1080/00173134.2021.1976825","url":null,"abstract":"Abstract The present study aimed to determine the fungal spores and their concentrations in the atmosphere of Mardin (southeast Turkey) in 2014 and 2015 using the volumetric method. A total of 43 taxa, hyphal fragments, and single septate ascospores were identified by light microscopy. It was determined that the dominant fungal spores included Cladosporium (51.5%), Ustilaginales species spores (13.9%), Alternaria (6.9%), Pucciniales species spores (1.6%), Agrocybe (1.2%), Pleospora (1.1%) and hyphal fragments (15.5%). The highest atmospheric spore concentrations were observed in May and the lowest levels were determined in February in both years. Dry air spores constituted a significant ratio of the total count (73.9%) in the atmosphere of Mardin. There were significant positive correlations between atmospheric concentrations of Alternaria, Cladosporium, Ustilaginales, and Pucciniales spores and temperatures. There were significant negative correlations between airborne fungal spore concentrations and daily mean humidity. There was a significant negative correlation between Agrocybe spore concentrations and daily mean temperature and a significant positive correlation between the same and humidity and precipitation. No significant correlation was determined between the meteorological variables and Pleospora and Aspergillus/Penicillium spore concentrations.","PeriodicalId":50414,"journal":{"name":"Grana","volume":"61 1","pages":"67 - 80"},"PeriodicalIF":0.9,"publicationDate":"2021-11-11","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46542037","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-19DOI: 10.1080/00173134.2021.1944303
Funda Özbek, N. M. Pınar, M. Uzunhisarcıklı, M. Ekici
Abstract Pollen morphology of 73 taxa belonging to the genus Scrophularia L. (Scrophulariaceae) distributed in Turkey is examined with light microscopy (LM) and scanning electron microscopy (SEM) to determine their properties and assess their taxonomic significance. The pollen grains of Scrophularia are radially symmetrical and isopolar. Their shape is oblate-spheroidal, suboblate, and prolate-spheroidal, with the polar axis ranging from 16.56 µm to 32.88 µm and the equatorial axis ranging from 18.24 µm to 35.52 µm. The aperture type is usually trizonocolporate but is rarely tetracolporate and trisyncolporate. Four types of exine ornamentation are observed: microreticulate, reticulate, microreticulate-rugulate, and suprareticulate. Numerical analysis reveals that pollen dimensions and exine sculpturing are the most useful diagnostic variables for discriminating Scrophularia taxa. Results also show a partial relationship between the Scrophularia taxa clustered on the basis of pollen morphology and the systematics of these taxa on the basis of general macromorphology.
{"title":"A palynological survey of the genus Scrophularia L. (Scrophulariaceae) from Turkey","authors":"Funda Özbek, N. M. Pınar, M. Uzunhisarcıklı, M. Ekici","doi":"10.1080/00173134.2021.1944303","DOIUrl":"https://doi.org/10.1080/00173134.2021.1944303","url":null,"abstract":"Abstract Pollen morphology of 73 taxa belonging to the genus Scrophularia L. (Scrophulariaceae) distributed in Turkey is examined with light microscopy (LM) and scanning electron microscopy (SEM) to determine their properties and assess their taxonomic significance. The pollen grains of Scrophularia are radially symmetrical and isopolar. Their shape is oblate-spheroidal, suboblate, and prolate-spheroidal, with the polar axis ranging from 16.56 µm to 32.88 µm and the equatorial axis ranging from 18.24 µm to 35.52 µm. The aperture type is usually trizonocolporate but is rarely tetracolporate and trisyncolporate. Four types of exine ornamentation are observed: microreticulate, reticulate, microreticulate-rugulate, and suprareticulate. Numerical analysis reveals that pollen dimensions and exine sculpturing are the most useful diagnostic variables for discriminating Scrophularia taxa. Results also show a partial relationship between the Scrophularia taxa clustered on the basis of pollen morphology and the systematics of these taxa on the basis of general macromorphology.","PeriodicalId":50414,"journal":{"name":"Grana","volume":"61 1","pages":"182 - 213"},"PeriodicalIF":0.9,"publicationDate":"2021-10-19","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46031208","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-10-07DOI: 10.1080/00173134.2021.1944301
Jungang Peng, S. Slater, V. Vajda
Abstract Staurosaccites, a highly distinctive pollen genus, ranges from the late Anisian (Pelsonian; Middle Triassic) to the Norian, at low to mid latitudes, globally. Here we review the systematic taxonomy and spatial and temporal ranges of Staurosaccites. We provide an emendation to S. tharipatharensis, synonymise S. minutus with the type species S. quadrifidus, and retain the species S. quadrifidus, S. tharipatharensis, S. densus and S. marginalis. Following comparison with morphologically similar pollen and environmental reconstructions of the habitat of its parent plant, we hypothesise that Staurosaccites was produced by a conifer that was likely adapted to warm and humid conditions. Based on occurrences of diagnostic taxa for the Onslow and Ipswich microfloral provinces in the Southern Hemisphere (Staurosaccites, Camerosporites, Enzonalasporites, Infernopollenites and Ovalipollis), we show that these palynofloras were established in the Middle Triassic. Our findings further suggest that, based on the presence of diagnostic taxa in western Laurasia and their absence in eastern Laurasia, western and eastern Laurasia represent different palynofloral provinces in the Middle Triassic.
{"title":"A review of the Triassic pollen Staurosaccites: systematic and phytogeographical implications","authors":"Jungang Peng, S. Slater, V. Vajda","doi":"10.1080/00173134.2021.1944301","DOIUrl":"https://doi.org/10.1080/00173134.2021.1944301","url":null,"abstract":"Abstract Staurosaccites, a highly distinctive pollen genus, ranges from the late Anisian (Pelsonian; Middle Triassic) to the Norian, at low to mid latitudes, globally. Here we review the systematic taxonomy and spatial and temporal ranges of Staurosaccites. We provide an emendation to S. tharipatharensis, synonymise S. minutus with the type species S. quadrifidus, and retain the species S. quadrifidus, S. tharipatharensis, S. densus and S. marginalis. Following comparison with morphologically similar pollen and environmental reconstructions of the habitat of its parent plant, we hypothesise that Staurosaccites was produced by a conifer that was likely adapted to warm and humid conditions. Based on occurrences of diagnostic taxa for the Onslow and Ipswich microfloral provinces in the Southern Hemisphere (Staurosaccites, Camerosporites, Enzonalasporites, Infernopollenites and Ovalipollis), we show that these palynofloras were established in the Middle Triassic. Our findings further suggest that, based on the presence of diagnostic taxa in western Laurasia and their absence in eastern Laurasia, western and eastern Laurasia represent different palynofloral provinces in the Middle Triassic.","PeriodicalId":50414,"journal":{"name":"Grana","volume":"60 1","pages":"407 - 423"},"PeriodicalIF":0.9,"publicationDate":"2021-10-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43343249","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-29DOI: 10.1080/00173134.2021.1960420
Simone Cartaxo-Pinto, G. C. Paulo, B. Jackes, V. Gonçalves-Esteves, C. B. Mendonça
Abstract The tribe Viteae comprises about 200 species and is represented by the genera Vitis and Ampelocissus. Vitis is the most studied genus within the grape family (Vitaceae) because of the global economic importance of its fruits and derived products. This study examined the palynology of Ampelocissus and Vitis species belonging to the tribe Viteae to identify pollen characters that may contribute to the taxonomic and morphological characterisation of Ampelocissus. Pollen specimens were obtained from herbaria, treated by the acetolysis method, measured, photographed, and described using light and scanning electron microscopy. In the analysed species, pollen grains were isopolar or heteropolar, medium-sized, tricolporate, oblate spheroidal to subprolate. Ornamentation patterns differed among species, with examples of bireticulate, microreticulate, perforate, reticulate, and rugulate sexine. These characters were used for the development of a pollen key to the genera. Principal component analysis revealed that quantitative pollen characters were the most important for group discrimination. This study contributes to the palynological knowledge of some undescribed species and provides novel palynotaxonomic information on the family Vitaceae.
{"title":"A palynological perspective on the tribe Viteae of the grape family (Vitaceae)","authors":"Simone Cartaxo-Pinto, G. C. Paulo, B. Jackes, V. Gonçalves-Esteves, C. B. Mendonça","doi":"10.1080/00173134.2021.1960420","DOIUrl":"https://doi.org/10.1080/00173134.2021.1960420","url":null,"abstract":"Abstract The tribe Viteae comprises about 200 species and is represented by the genera Vitis and Ampelocissus. Vitis is the most studied genus within the grape family (Vitaceae) because of the global economic importance of its fruits and derived products. This study examined the palynology of Ampelocissus and Vitis species belonging to the tribe Viteae to identify pollen characters that may contribute to the taxonomic and morphological characterisation of Ampelocissus. Pollen specimens were obtained from herbaria, treated by the acetolysis method, measured, photographed, and described using light and scanning electron microscopy. In the analysed species, pollen grains were isopolar or heteropolar, medium-sized, tricolporate, oblate spheroidal to subprolate. Ornamentation patterns differed among species, with examples of bireticulate, microreticulate, perforate, reticulate, and rugulate sexine. These characters were used for the development of a pollen key to the genera. Principal component analysis revealed that quantitative pollen characters were the most important for group discrimination. This study contributes to the palynological knowledge of some undescribed species and provides novel palynotaxonomic information on the family Vitaceae.","PeriodicalId":50414,"journal":{"name":"Grana","volume":"61 1","pages":"27 - 44"},"PeriodicalIF":0.9,"publicationDate":"2021-09-29","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45940442","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-09-02DOI: 10.1080/00173134.2021.1942976
J. A. López-Sáez, R. Luelmo-Lautenschlaeger, S. Pérez‐Díaz
The Manantial de las Queseras mire (40o 16′ 59.82′′ N, 4o 55ʹ 15.28′′ W; size c. 0.054 ha; 1295 m above sea level [a.s.l.]) lies on the southeastern slope of the ‘Sierra de Cabeza Aguda’ in the eastern part of the Gredos Range (Pedro Bernardo, Ávila). The area experiences a Mediterranean climate with dry and warm summers and rainy winter months, influenced by the Atlantic winds from the west. The average annual temperature is 14 °C and the annual precipitation is 1400 mm. The most representative plant communities of the area are maritime pine (Pinus pinaster Ait.) woodlands, and isolated Pinus nigra Arnold subsp. salzmannii (Dunal) Franco and Pinus sylvestris L. trees (López-Sáez et al. 2019). The uppermost areas (1600–2008 m a.s.l.) are occupied by broom communities of Cytisus oromediterraneus Rivas-Martínez, Díaz, Prieto, Loidi & Penas and Echinospartum barnadesii (Graells) Rothm. (LópezSáez et al. 2016). Riparian forests are characterised by black alder (Alnus glutinosa [L.] Gaertn.) and Fraxinus angustifolia Vahl. The mire vegetation is composed mainly of Sphagnum sp., Carex nigra (L.) Reich. and Drosera rotundifolia L. The bedrock is old siliceous basement made up mainly of LateHercynian granites.
{"title":"57. Manantial de las Queseras, Gregos Range (central Spain)","authors":"J. A. López-Sáez, R. Luelmo-Lautenschlaeger, S. Pérez‐Díaz","doi":"10.1080/00173134.2021.1942976","DOIUrl":"https://doi.org/10.1080/00173134.2021.1942976","url":null,"abstract":"The Manantial de las Queseras mire (40o 16′ 59.82′′ N, 4o 55ʹ 15.28′′ W; size c. 0.054 ha; 1295 m above sea level [a.s.l.]) lies on the southeastern slope of the ‘Sierra de Cabeza Aguda’ in the eastern part of the Gredos Range (Pedro Bernardo, Ávila). The area experiences a Mediterranean climate with dry and warm summers and rainy winter months, influenced by the Atlantic winds from the west. The average annual temperature is 14 °C and the annual precipitation is 1400 mm. The most representative plant communities of the area are maritime pine (Pinus pinaster Ait.) woodlands, and isolated Pinus nigra Arnold subsp. salzmannii (Dunal) Franco and Pinus sylvestris L. trees (López-Sáez et al. 2019). The uppermost areas (1600–2008 m a.s.l.) are occupied by broom communities of Cytisus oromediterraneus Rivas-Martínez, Díaz, Prieto, Loidi & Penas and Echinospartum barnadesii (Graells) Rothm. (LópezSáez et al. 2016). Riparian forests are characterised by black alder (Alnus glutinosa [L.] Gaertn.) and Fraxinus angustifolia Vahl. The mire vegetation is composed mainly of Sphagnum sp., Carex nigra (L.) Reich. and Drosera rotundifolia L. The bedrock is old siliceous basement made up mainly of LateHercynian granites.","PeriodicalId":50414,"journal":{"name":"Grana","volume":"60 1","pages":"480 - 482"},"PeriodicalIF":0.9,"publicationDate":"2021-09-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44564533","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-08-04DOI: 10.1080/00173134.2021.1923798
Gabriela Cristina Sakugawa, I. Cordeiro, Allan Carlos Pscheidt, Monica Lanzoni Rossi, Adriana Pinheiro Martinelli, Cynthia Fernandes Pinto da Luz
Abstract Pollen grains of 23 species distributed in 15 genera and represented by 64 specimens were analysed using light and scanning electron microscopy to characterise the neotropical genera of Hippomaneae. Five of these species are palynologically characterised for the first time. Hippomaneae pollen is shed in monads, being small to large, isopolar, oblate-spheroidal to prolate, with an amb ranging from circular, three-lobed to distinctly three-lobed, tricolporate, very long colpi (except for Hura crepitans in which is long), margo psilate (rugulate only in Colliguaja brasiliensis), narrow to wide, and endoapertures circular, lalongate to very lalongate, with costae. Sexine thicker than the nexine. Sexine is psilate-perforate except for Algernonia brasiliensis, C. brasiliensis, Gymnanthes multiramea, G. schottiana, Microstachys corniculata, Pleradenophora membranifolia, and Sebastiania brasiliensis where it is microreticulate. Only in M. corniculata the sexine is separated from the nexine at the mesocolpus, forming a cavea. Although the Hippomaneae are considered stenopalynous in the literature, our results showed variation between species and genera groups, reinforcing the relevance of pollen morphology in the systematics of this tribe.
{"title":"Palynotaxonomy of tribe Hippomaneae A. Juss. (Euphorbioideae, Euphorbiaceae)","authors":"Gabriela Cristina Sakugawa, I. Cordeiro, Allan Carlos Pscheidt, Monica Lanzoni Rossi, Adriana Pinheiro Martinelli, Cynthia Fernandes Pinto da Luz","doi":"10.1080/00173134.2021.1923798","DOIUrl":"https://doi.org/10.1080/00173134.2021.1923798","url":null,"abstract":"Abstract Pollen grains of 23 species distributed in 15 genera and represented by 64 specimens were analysed using light and scanning electron microscopy to characterise the neotropical genera of Hippomaneae. Five of these species are palynologically characterised for the first time. Hippomaneae pollen is shed in monads, being small to large, isopolar, oblate-spheroidal to prolate, with an amb ranging from circular, three-lobed to distinctly three-lobed, tricolporate, very long colpi (except for Hura crepitans in which is long), margo psilate (rugulate only in Colliguaja brasiliensis), narrow to wide, and endoapertures circular, lalongate to very lalongate, with costae. Sexine thicker than the nexine. Sexine is psilate-perforate except for Algernonia brasiliensis, C. brasiliensis, Gymnanthes multiramea, G. schottiana, Microstachys corniculata, Pleradenophora membranifolia, and Sebastiania brasiliensis where it is microreticulate. Only in M. corniculata the sexine is separated from the nexine at the mesocolpus, forming a cavea. Although the Hippomaneae are considered stenopalynous in the literature, our results showed variation between species and genera groups, reinforcing the relevance of pollen morphology in the systematics of this tribe.","PeriodicalId":50414,"journal":{"name":"Grana","volume":"252 4","pages":"424 - 458"},"PeriodicalIF":0.9,"publicationDate":"2021-08-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/00173134.2021.1923798","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41290048","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-08-03DOI: 10.1080/00173134.2021.1950829
G. E. E. El Ghazali
Abstract Amaranthaceae s.lat. is a stenopalynous family showing, in contrast, a considerable phenotypic diversity for macromorhological characters. A total of one quantitative and seven qualitative characters were reviewed in an attempt to assess their taxonomic implications. The presence of unique shape class, pore membrane sculpturing, anulopunctate tectum and pore borders clearly distinguished the subfamilies Amaranthoideae and Gomphrenoideae (Amaranthaceae sensu stricto) from the rest of the subfamilies of Amaranthaceae s.lat. Metareticulate exines are present exclusively in the subfamily Gomphrenoideae, in one genus of the subfamily Corispermoideae and encountered in one species – belonging to subfamily Polycnemoideae. Pore numbers although reported as a useful diagnostic feature, showed considerable intra-specific variation. The two basic pollen-types (Amaranthus-type and Gomphrena-type) within the subfamilies Amaranthoideae and Gomphrenoideae are quite distinct and gained broad acceptance, whereas the pollen types investigated for the rest of the subfamilies (belonging to Chenopodiaceae) are diverse and intricate. With the exception of Anthochlamys-type (related to Gomphrena-type), it was noticed that either members of one type constitute members of different subfamilies, or members of the same subfamily were scattered in different pollen-types, highlighting difficulties in recognising distinctive pollen-types in these subfamilies. The pollen-types within the subfamilies Betoideae, Camphrosomoideae, Chenopodioideae, Corispermoideae, Salicornioideae, Salsoloideae, Suaedoideae and Polycnemoideae are diverse and do not support their differentiation. Members of the subfamily Polycnemoideae share similarities with Amaranthaceae s.str. rather than members of the family Chenopodiaceae.
{"title":"Pollen morphological studies in Amaranthaceae s.lat. (incl. Chenopodiaceae) and their taxonomic significance: A review","authors":"G. E. E. El Ghazali","doi":"10.1080/00173134.2021.1950829","DOIUrl":"https://doi.org/10.1080/00173134.2021.1950829","url":null,"abstract":"Abstract Amaranthaceae s.lat. is a stenopalynous family showing, in contrast, a considerable phenotypic diversity for macromorhological characters. A total of one quantitative and seven qualitative characters were reviewed in an attempt to assess their taxonomic implications. The presence of unique shape class, pore membrane sculpturing, anulopunctate tectum and pore borders clearly distinguished the subfamilies Amaranthoideae and Gomphrenoideae (Amaranthaceae sensu stricto) from the rest of the subfamilies of Amaranthaceae s.lat. Metareticulate exines are present exclusively in the subfamily Gomphrenoideae, in one genus of the subfamily Corispermoideae and encountered in one species – belonging to subfamily Polycnemoideae. Pore numbers although reported as a useful diagnostic feature, showed considerable intra-specific variation. The two basic pollen-types (Amaranthus-type and Gomphrena-type) within the subfamilies Amaranthoideae and Gomphrenoideae are quite distinct and gained broad acceptance, whereas the pollen types investigated for the rest of the subfamilies (belonging to Chenopodiaceae) are diverse and intricate. With the exception of Anthochlamys-type (related to Gomphrena-type), it was noticed that either members of one type constitute members of different subfamilies, or members of the same subfamily were scattered in different pollen-types, highlighting difficulties in recognising distinctive pollen-types in these subfamilies. The pollen-types within the subfamilies Betoideae, Camphrosomoideae, Chenopodioideae, Corispermoideae, Salicornioideae, Salsoloideae, Suaedoideae and Polycnemoideae are diverse and do not support their differentiation. Members of the subfamily Polycnemoideae share similarities with Amaranthaceae s.str. rather than members of the family Chenopodiaceae.","PeriodicalId":50414,"journal":{"name":"Grana","volume":"61 1","pages":"1 - 7"},"PeriodicalIF":0.9,"publicationDate":"2021-08-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/00173134.2021.1950829","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45829284","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-07-27DOI: 10.1080/00173134.2021.1944302
Natalia Ryabogina, Elena Marinova, M. Rösch
Bodensee-Untersee, the smaller part of Lake Constance, covers an area of 62 km between Konstanz and Stein am Rhein and is divided into several basins by peninsulas and the Island Reichenau. The northeastern basin is Gnadensee, with an area of about 10 km, a maximum depth of 20 m, and a water table at 394 m above sea level (a.s.l.). Only minor tributaries flow into Gnadensee coming from the Bodanrück peninsula to the north (elevation up to 600 m a.s.l.). The climate is sub-oceanic, with annual average temperatures of 9 °C and annual precipitation of 750 mm. The potential natural vegetation in the lake catchment would be deciduous forest dominated by Fagus sylvatica L. with Abies alba Mill., Quercus petraea Liebl., Quercus robur L., Acer pseudoplatanus L., Fraxinus excelsior L., Ulmus glabra Huds., Carpinus betulus L., locally Tilia cordata Mill., Tilia platyphyllos Scop. and a rich and diverse shrub and herb layer. Today, Gnadensee is surrounded by densely settled cultural landscape and therefore the vegetation is strongly influenced by agriculture and urbanisation, except for the extended wetlands to the east belonging to the nature reserve ‘Wollmatinger Ried–Untersee–Gnadensee’. Recently, several pollen profiles have been studied in this area (Rösch et al. 2021); the closest pollen profiles come from: Mainau, 9.5 km to the east, Mindelsee, 6.5 km to the northwest, and Hornstaad, 4.5 km to the west.
{"title":"56. Gnadensee","authors":"Natalia Ryabogina, Elena Marinova, M. Rösch","doi":"10.1080/00173134.2021.1944302","DOIUrl":"https://doi.org/10.1080/00173134.2021.1944302","url":null,"abstract":"Bodensee-Untersee, the smaller part of Lake Constance, covers an area of 62 km between Konstanz and Stein am Rhein and is divided into several basins by peninsulas and the Island Reichenau. The northeastern basin is Gnadensee, with an area of about 10 km, a maximum depth of 20 m, and a water table at 394 m above sea level (a.s.l.). Only minor tributaries flow into Gnadensee coming from the Bodanrück peninsula to the north (elevation up to 600 m a.s.l.). The climate is sub-oceanic, with annual average temperatures of 9 °C and annual precipitation of 750 mm. The potential natural vegetation in the lake catchment would be deciduous forest dominated by Fagus sylvatica L. with Abies alba Mill., Quercus petraea Liebl., Quercus robur L., Acer pseudoplatanus L., Fraxinus excelsior L., Ulmus glabra Huds., Carpinus betulus L., locally Tilia cordata Mill., Tilia platyphyllos Scop. and a rich and diverse shrub and herb layer. Today, Gnadensee is surrounded by densely settled cultural landscape and therefore the vegetation is strongly influenced by agriculture and urbanisation, except for the extended wetlands to the east belonging to the nature reserve ‘Wollmatinger Ried–Untersee–Gnadensee’. Recently, several pollen profiles have been studied in this area (Rösch et al. 2021); the closest pollen profiles come from: Mainau, 9.5 km to the east, Mindelsee, 6.5 km to the northwest, and Hornstaad, 4.5 km to the west.","PeriodicalId":50414,"journal":{"name":"Grana","volume":"60 1","pages":"477 - 479"},"PeriodicalIF":0.9,"publicationDate":"2021-07-27","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/00173134.2021.1944302","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48033323","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2021-07-05DOI: 10.1080/00173134.2021.1910726
Dayanand Dalawai, H. N. Murthy
Abstract Light and scanning electron microscopic studies of pollen and seeds were carried out for nine species of Andrographis (Acanthaceae) from India. Pollen in all species is isopolar, radially symmetric and tricolporate with elongated apertures, oblate-spheroidal in A. ovata, prolate-spheroidal in A. alata, prolate in A. echioides and A. macrobotrys to sub-prolate in A. lineata var. lawii, A. lineata var. lineata, A. paniculata, A. producta and A. serpyllifolia and lobate-circular to triangular amb. Surface ornamentation is bireticulate except in A. alata, which has microperforate and spinulate tectum. Seeds are obovoid, oblongoid, subquadrate or ellipsoid in shape. The seed coat is covered with hair in A. ovata and with echinate protuberances in A. echioides and A. serpyllifolia. The pollen characteristics of A. echioides including the colporate apertures, prolate shape, bireticulate tectum and verrucate aperture membrane are support an inclusion of this species in Andrographis, rather than considering it as Indoneesiella echioides, which has been the subject of much debate.
{"title":"Pollen and seed morphology of selected species of Andrographis (Acanthaceae) from India","authors":"Dayanand Dalawai, H. N. Murthy","doi":"10.1080/00173134.2021.1910726","DOIUrl":"https://doi.org/10.1080/00173134.2021.1910726","url":null,"abstract":"Abstract Light and scanning electron microscopic studies of pollen and seeds were carried out for nine species of Andrographis (Acanthaceae) from India. Pollen in all species is isopolar, radially symmetric and tricolporate with elongated apertures, oblate-spheroidal in A. ovata, prolate-spheroidal in A. alata, prolate in A. echioides and A. macrobotrys to sub-prolate in A. lineata var. lawii, A. lineata var. lineata, A. paniculata, A. producta and A. serpyllifolia and lobate-circular to triangular amb. Surface ornamentation is bireticulate except in A. alata, which has microperforate and spinulate tectum. Seeds are obovoid, oblongoid, subquadrate or ellipsoid in shape. The seed coat is covered with hair in A. ovata and with echinate protuberances in A. echioides and A. serpyllifolia. The pollen characteristics of A. echioides including the colporate apertures, prolate shape, bireticulate tectum and verrucate aperture membrane are support an inclusion of this species in Andrographis, rather than considering it as Indoneesiella echioides, which has been the subject of much debate.","PeriodicalId":50414,"journal":{"name":"Grana","volume":"60 1","pages":"459 - 476"},"PeriodicalIF":0.9,"publicationDate":"2021-07-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1080/00173134.2021.1910726","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43139458","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
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