Abstract: We describe two new species of Ceropegia. Of these, Ceropegia pseudolugardiae Bruyns of sect. Phalaena H.Huber from Kenya and Tanzania has long been considered to belong to C. lugardiae N.E.Br. but has fibrous roots rather than the cluster of swollen, fusiform roots typical of C. lugardiae. This important feature has been much neglected, as the rootstock is absent from most herbarium specimens. Ceropegia pseudolugardiae is closely related to C. distincta N.E.Br. and C. zambesiaca Masinde & Meve, which all share the fibrous roots and differ in details of their flowers. The second species is C. lubangoensis Bruyns of sect. Laguncula H.Huber from Angola. This is distinguished from all others in this section by the considerably longer corolla-lobes.
{"title":"Two New Species of Ceropegia (Apocynaceae) from Tropical Africa","authors":"P. Bruyns, C. Klak, P. Hanáček","doi":"10.2985/026.029.0109","DOIUrl":"https://doi.org/10.2985/026.029.0109","url":null,"abstract":"Abstract: We describe two new species of Ceropegia. Of these, Ceropegia pseudolugardiae Bruyns of sect. Phalaena H.Huber from Kenya and Tanzania has long been considered to belong to C. lugardiae N.E.Br. but has fibrous roots rather than the cluster of swollen, fusiform roots typical of C. lugardiae. This important feature has been much neglected, as the rootstock is absent from most herbarium specimens. Ceropegia pseudolugardiae is closely related to C. distincta N.E.Br. and C. zambesiaca Masinde & Meve, which all share the fibrous roots and differ in details of their flowers. The second species is C. lubangoensis Bruyns of sect. Laguncula H.Huber from Angola. This is distinguished from all others in this section by the considerably longer corolla-lobes.","PeriodicalId":50413,"journal":{"name":"Haseltonia","volume":"34 1","pages":"57 - 66"},"PeriodicalIF":1.5,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88014395","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}
Abstract: Species can have broad altitudinal distributions and their characteristics may vary throughout distribution ranges. Ploidy level can vary along environmental gradients, such as altitudinal ones. However, the relationships between ploidy level and altitude may be diverse. The karyotype allows us to know the structural and quantitative characteristics of the chromosomal pairs and to relate these characteristics to the environment where the species occur. Species of the Cactaceae family can be found from sea level to 4500 m above sea level (asl). The greatest species richness is found in mountain areas, where species occupy wide altitudinal ranges. Gymnocalycium belongs to the subfamily Cactoideae; it is a genus endemic to southern South America and its main center of diversity is found in the mountain ranges of central and northern Argentina. The basic chromosome number for Cactaceae is x = 11, with polyploidy being the main existing variation. The aim of this work was to analyze cytogenetic variables in populations of four species of the genus Gymnocalycium (G. andreae, G. erinaceum, G. monvillei, and G. mostii) along their altitudinal distribution. Idiograms were constructed using HCl/Giemsa, CMA/DAPI fluorescent chromosomal banding and fluorescent in situ hybridization (FISH). The karyotypes of the analyzed populations of each species were symmetric and showed little variation in size and symmetry. All the populations of G. andreae, G. erinaceum and G. mostii were found to be diploid and had the greatest distribution; G. monvillei was found to be tetraploid in all the populations analyzed. CMA+/DAPIbands associated with secondary constrictions (NORs) were detected in all the populations of all the species. The cytogenetic characteristics of the studied species were constant along the altitudinal gradients, showing that they can occur at different altitudes without major cytogenetic modifications.
摘要/ Abstract摘要:物种具有广泛的垂直分布，其特征在不同的分布范围内可能存在差异。倍性水平可以随环境梯度而变化，例如海拔梯度。然而，倍性水平与海拔之间的关系可能是多样的。核型使我们能够了解染色体对的结构和数量特征，并将这些特征与物种发生的环境联系起来。仙人掌科的种类分布在海平面至海拔4500米(海拔高度)。物种丰富度最高的是山区，物种分布的高度范围很广。Gymnocalycium属仙人掌亚科;它是南美洲南部特有的一个属，其主要的多样性中心在阿根廷中部和北部的山脉中发现。仙人掌科的基本染色体数为x = 11，多倍体为主要变异。本研究的目的是分析4种裸萼属植物(G. andreae, G. erinaceum, G. monvillei和G. mostii)种群沿海拔分布的细胞遗传学变量。采用HCl/Giemsa、CMA/DAPI荧光染色体显带和荧光原位杂交(FISH)技术构建异构体图。各种群的核型基本对称，大小和对称性变化不大。andreae、G. erinaceum和G. mostii居群均为二倍体，分布最多;所有群体均为四倍体。在所有种群中均检测到与次生缩窄(NORs)相关的CMA+/ dapiband。研究物种的细胞遗传学特征沿海拔梯度保持不变，表明它们可以发生在不同海拔，而不会发生重大的细胞遗传学改变。
{"title":"Cytogenetic Characteristics of Four Gymnocalycium (Cactaceae) Species along Altitudinal Gradients","authors":"K. Bauk, D. Gurvich, M. L. Las Peñas","doi":"10.2985/026.029.0111","DOIUrl":"https://doi.org/10.2985/026.029.0111","url":null,"abstract":"Abstract: Species can have broad altitudinal distributions and their characteristics may vary throughout distribution ranges. Ploidy level can vary along environmental gradients, such as altitudinal ones. However, the relationships between ploidy level and altitude may be diverse. The karyotype allows us to know the structural and quantitative characteristics of the chromosomal pairs and to relate these characteristics to the environment where the species occur. Species of the Cactaceae family can be found from sea level to 4500 m above sea level (asl). The greatest species richness is found in mountain areas, where species occupy wide altitudinal ranges. Gymnocalycium belongs to the subfamily Cactoideae; it is a genus endemic to southern South America and its main center of diversity is found in the mountain ranges of central and northern Argentina. The basic chromosome number for Cactaceae is x = 11, with polyploidy being the main existing variation. The aim of this work was to analyze cytogenetic variables in populations of four species of the genus Gymnocalycium (G. andreae, G. erinaceum, G. monvillei, and G. mostii) along their altitudinal distribution. Idiograms were constructed using HCl/Giemsa, CMA/DAPI fluorescent chromosomal banding and fluorescent in situ hybridization (FISH). The karyotypes of the analyzed populations of each species were symmetric and showed little variation in size and symmetry. All the populations of G. andreae, G. erinaceum and G. mostii were found to be diploid and had the greatest distribution; G. monvillei was found to be tetraploid in all the populations analyzed. CMA+/DAPIbands associated with secondary constrictions (NORs) were detected in all the populations of all the species. The cytogenetic characteristics of the studied species were constant along the altitudinal gradients, showing that they can occur at different altitudes without major cytogenetic modifications.","PeriodicalId":50413,"journal":{"name":"Haseltonia","volume":"29 1","pages":"83 - 95"},"PeriodicalIF":1.5,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"78077074","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}
M. Baker, L. Majure, Michelle A. Cloud-Hughes, J. Rebman
Abstract: The rare Baja California Sur endemic cactus Grusonia robertsii was originally hypothesized to be an intergeneric hybrid between G. invicta and Cylindropuntia alcahes subsp. alcahes but was described as a Grusonia due to its overall closer resemblance to G. invicta, except in the fruit. A more comprehensive analysis of the morphology and phylogenetic placement of G. robertsii based on plastid and nrDNA sequences has revealed that Rebman's original hypothesis was correct, and this taxon represents the first documented intergeneric hybrid between Cylindropuntia and Grusonia, with G. invicta as the maternal parent and C. alcahes subsp. alcahes as the paternal contributor. We here describe a new nothogenus, ×Cylindronia, and provide a new combination for the nothospecies ×Cylindronia robertsii comb. nov.
{"title":"×Cylindronia, a New Nothogenus Representing the First Reported Hybrid Between Grusonia and Cylindropuntia (Cactaceae)","authors":"M. Baker, L. Majure, Michelle A. Cloud-Hughes, J. Rebman","doi":"10.2985/026.029.0102","DOIUrl":"https://doi.org/10.2985/026.029.0102","url":null,"abstract":"Abstract: The rare Baja California Sur endemic cactus Grusonia robertsii was originally hypothesized to be an intergeneric hybrid between G. invicta and Cylindropuntia alcahes subsp. alcahes but was described as a Grusonia due to its overall closer resemblance to G. invicta, except in the fruit. A more comprehensive analysis of the morphology and phylogenetic placement of G. robertsii based on plastid and nrDNA sequences has revealed that Rebman's original hypothesis was correct, and this taxon represents the first documented intergeneric hybrid between Cylindropuntia and Grusonia, with G. invicta as the maternal parent and C. alcahes subsp. alcahes as the paternal contributor. We here describe a new nothogenus, ×Cylindronia, and provide a new combination for the nothospecies ×Cylindronia robertsii comb. nov.","PeriodicalId":50413,"journal":{"name":"Haseltonia","volume":"55 1","pages":"5 - 15"},"PeriodicalIF":1.5,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83202823","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}
Abstract: Mode of reproduction in the genus Opuntia varies among species but often includes both vegetative and sexual reproduction, with the latter often facilitated by animal seed dispersal. In this multi-year study, we examined fruit and seed production and seed dispersal in the Mojave prickly pear (Opuntia phaeacantha) at two sites in the southwest Mojave Desert. Between 2015–2020 we counted fruits on randomly selected cactus patches, quantified fruit losses from those patches over time, collected fruits, and extracted and counted seeds. To assess seed dispersal, we collected fresh mammal pellets in belt transects at one site from 2016–2018; pellets were examined for Opuntia seeds. To assess animal fruit consumption and removal, we installed camera traps at one site. We baited selected patches with fruits and photographed animals that consumed or removed fruits. Fruit numbers varied widely among years and sites, although fruit production was not significantly correlated with climatic variables. Fruit losses were high at both sites, occurring more slowly in years of high fruit production. Seeds per fruit also varied with means ranging from 65 to 125 seeds. Rabbit and deer (Odocoileus hemionus) pellets were abundant at one site where we found 0.02 seeds per rabbit pellet but none in deer pellets. Camera traps baited with fruits revealed that they disappeared more quickly from patch edges than from patch interiors. Desert cottontails (Sylvilagus audubonii) and California jackrabbits (Lepus californicus) dominated photographs at patch edges while nearly all interior photographs were of white-tailed antelope squirrels (Ammospermophilus leucurus). In summary, although the number of seeds produced by O. phaeacantha is highly variable, the total number per site is high in some years, and fruits are consumed and seeds spread by animal dispersers.
{"title":"Fruit Production and Seed Dispersal of Opuntia phaeacantha (Cactaceae) in the Southwest Mojave Desert","authors":"M. Borchert, C. Tyler","doi":"10.2985/026.029.0108","DOIUrl":"https://doi.org/10.2985/026.029.0108","url":null,"abstract":"Abstract: Mode of reproduction in the genus Opuntia varies among species but often includes both vegetative and sexual reproduction, with the latter often facilitated by animal seed dispersal. In this multi-year study, we examined fruit and seed production and seed dispersal in the Mojave prickly pear (Opuntia phaeacantha) at two sites in the southwest Mojave Desert. Between 2015–2020 we counted fruits on randomly selected cactus patches, quantified fruit losses from those patches over time, collected fruits, and extracted and counted seeds. To assess seed dispersal, we collected fresh mammal pellets in belt transects at one site from 2016–2018; pellets were examined for Opuntia seeds. To assess animal fruit consumption and removal, we installed camera traps at one site. We baited selected patches with fruits and photographed animals that consumed or removed fruits. Fruit numbers varied widely among years and sites, although fruit production was not significantly correlated with climatic variables. Fruit losses were high at both sites, occurring more slowly in years of high fruit production. Seeds per fruit also varied with means ranging from 65 to 125 seeds. Rabbit and deer (Odocoileus hemionus) pellets were abundant at one site where we found 0.02 seeds per rabbit pellet but none in deer pellets. Camera traps baited with fruits revealed that they disappeared more quickly from patch edges than from patch interiors. Desert cottontails (Sylvilagus audubonii) and California jackrabbits (Lepus californicus) dominated photographs at patch edges while nearly all interior photographs were of white-tailed antelope squirrels (Ammospermophilus leucurus). In summary, although the number of seeds produced by O. phaeacantha is highly variable, the total number per site is high in some years, and fruits are consumed and seeds spread by animal dispersers.","PeriodicalId":50413,"journal":{"name":"Haseltonia","volume":"21 1","pages":"49 - 56"},"PeriodicalIF":1.5,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73636088","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}
Guillermo Pino, Marie‐Stéphanie Samain, Efraín Suclli, Andrés Alcalá, Daniel Marquiegui
Abstract: Two new geophytic species of Peperomia subgenus Tildenia (Piperaceae) from Central Peru are described; (1) Peperomia pachyspadix is a new species from Huancavelica. It is phenotypically similar to P. andina from Cajamarca, but its leaves are not as thick and they lack the funnel shape and purple color of the abaxial side; it is also similar to P. wernerrauhii from Huánuco, but its leaves and tubers are larger. The new species can be distinguished from the abovementioned ones by the spadix, many times shorter and twice as thick. The seeds of P. andina, P. wernerrauhii and P. pachyspadix are similar in shape but the latter has the largest of all three. (2) Peperomia fundus-oculi is a new species with epigeous tuber discovered on the eastern Andean slopes of Ayacucho. Plants are morphologically like P. chutanka for its exposed and branched aerial tubers. Its leaves have a shape similar to this species but are not as succulent, they lack the purplish color of the abaxial side, and they have a characteristic pattern on its adaxial side, with a whitish iridescent spot in the center, with irregular margins, from where nerves emerge, giving the impression of the eye fundus, hence its name in Latin. Its anthers, ovaries, and fruits are also shorter than those of P. chutanka.
{"title":"Two New Geophytic Species of Peperomia Subgenus Tildenia (Piperaceae) from Central Peru","authors":"Guillermo Pino, Marie‐Stéphanie Samain, Efraín Suclli, Andrés Alcalá, Daniel Marquiegui","doi":"10.2985/026.029.0105","DOIUrl":"https://doi.org/10.2985/026.029.0105","url":null,"abstract":"Abstract: Two new geophytic species of Peperomia subgenus Tildenia (Piperaceae) from Central Peru are described; (1) Peperomia pachyspadix is a new species from Huancavelica. It is phenotypically similar to P. andina from Cajamarca, but its leaves are not as thick and they lack the funnel shape and purple color of the abaxial side; it is also similar to P. wernerrauhii from Huánuco, but its leaves and tubers are larger. The new species can be distinguished from the abovementioned ones by the spadix, many times shorter and twice as thick. The seeds of P. andina, P. wernerrauhii and P. pachyspadix are similar in shape but the latter has the largest of all three. (2) Peperomia fundus-oculi is a new species with epigeous tuber discovered on the eastern Andean slopes of Ayacucho. Plants are morphologically like P. chutanka for its exposed and branched aerial tubers. Its leaves have a shape similar to this species but are not as succulent, they lack the purplish color of the abaxial side, and they have a characteristic pattern on its adaxial side, with a whitish iridescent spot in the center, with irregular margins, from where nerves emerge, giving the impression of the eye fundus, hence its name in Latin. Its anthers, ovaries, and fruits are also shorter than those of P. chutanka.","PeriodicalId":50413,"journal":{"name":"Haseltonia","volume":"40 1","pages":"27 - 35"},"PeriodicalIF":1.5,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"82868990","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}
Abstract: Two populations of Crassula subulata var. hispida, a variety previously recorded as being extinct, were discovered in the southern foothills of the Langeberg mountain range near the town of Ashton, in the Western Cape Province, South Africa. Characters of the living plant specimens are noted, and shown to agree with the type. Observations on the habitat and ecology of the plants are included; as is a suggested revised conservation status.
摘要/ Abstract摘要:在南非西开普省阿什顿镇附近的Langeberg山脉南麓发现了两个先前被记录为灭绝的Crassula subulata var. hispida种群。指出了现存植物标本的特征，并表明其与类型一致。包括对植物生境和生态的观察;这是建议修订的保护地位。
{"title":"Rediscovery of Crassula subulata var. hispida (Crassulaceae subfam. Crassuloideae)","authors":"Steven Molteno, Margrit Bischofberger","doi":"10.2985/026.029.0112","DOIUrl":"https://doi.org/10.2985/026.029.0112","url":null,"abstract":"Abstract: Two populations of Crassula subulata var. hispida, a variety previously recorded as being extinct, were discovered in the southern foothills of the Langeberg mountain range near the town of Ashton, in the Western Cape Province, South Africa. Characters of the living plant specimens are noted, and shown to agree with the type. Observations on the habitat and ecology of the plants are included; as is a suggested revised conservation status.","PeriodicalId":50413,"journal":{"name":"Haseltonia","volume":"9 1","pages":"96 - 102"},"PeriodicalIF":1.5,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86323106","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}
C. R. Martínez-González, R. Cuevas-Guzmán, J. Jiménez-Ramírez, J. MASCORRO-GALLARDO
Abstract: Opuntia is a genus of plants known as prickly pear cactus (nopales), with about 200 species, and is taxonomically complicated. The present study was focused on characterizing micromorphology and providing a phylogenetic hypothesis to place Opuntia setocarpa (described in 2017) in relation to other related species. Three individuals were characterized and collected in Neverías in the Sierra of Cacoma of the municipality Autlán de Navarro in Jalisco, Mexico. The micromorphology of spines, epidermis and stoma was characterized with scanning electron microscopy. The phylogenetic hypothesis was performed with maximum likelihood and Bayesian Inference including other Mexican species. Opuntia setocarpa is recovered as a supported species within Opuntia s.s.
摘要/ Abstract摘要:仙人掌属(Opuntia)是多刺梨仙人掌(nopales)的一个属，约有200种，分类较为复杂。本研究的重点是表征微形态，并提供一个系统发育假说，将Opuntia setocarpa(2017年描述)与其他相关物种进行比较。在墨西哥哈利斯科州Autlán de Navarro市的卡科马山脉Neverías对三个个体进行了特征鉴定和收集。扫描电镜观察了棘、表皮和气孔的显微形态。系统发育假说采用最大似然和贝叶斯推理，包括其他墨西哥物种。麻豆是麻豆属植物中的一种支撑物。
{"title":"Opuntia setocarpa (Cactaceae, Opuntioideae): Phylogenetic Hypothesis and Notes","authors":"C. R. Martínez-González, R. Cuevas-Guzmán, J. Jiménez-Ramírez, J. MASCORRO-GALLARDO","doi":"10.2985/026.029.0106","DOIUrl":"https://doi.org/10.2985/026.029.0106","url":null,"abstract":"Abstract: Opuntia is a genus of plants known as prickly pear cactus (nopales), with about 200 species, and is taxonomically complicated. The present study was focused on characterizing micromorphology and providing a phylogenetic hypothesis to place Opuntia setocarpa (described in 2017) in relation to other related species. Three individuals were characterized and collected in Neverías in the Sierra of Cacoma of the municipality Autlán de Navarro in Jalisco, Mexico. The micromorphology of spines, epidermis and stoma was characterized with scanning electron microscopy. The phylogenetic hypothesis was performed with maximum likelihood and Bayesian Inference including other Mexican species. Opuntia setocarpa is recovered as a supported species within Opuntia s.s.","PeriodicalId":50413,"journal":{"name":"Haseltonia","volume":"7 1","pages":"36 - 42"},"PeriodicalIF":1.5,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87331277","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}
A. Sánchez-Urdaneta, Ciolys Beatriz Colmenares de Ortega, Jorge Ortega-Alcalá, Gisela del Carmen Rivero-Maldonado, Darisol Lisbeth Pacheco-Rivera, Guillermo Antonio Sthormes-Méndez, B. Bracho-Bravo, Bernardette Medina, Vicky de La Cruz Chirinos-Moreno, Ernesto Suarez-Calleja, Betzabeth del Consuelo Gil, Dianelis del Carmen Sánchez-Urdaneta, Steve Simón Belzares-Barboza, C. B. Peña-Valdivia, J. A. Reyes-Agüero, Y. Terán, Ramón Antonio D'Aubeterre-Marcano, Joël Lodé
Abstract: Cactaceae-Angiospermae, of American origin, with worldwide naturalized distribution, includes promising species in economics and ecology; being a threatened group, it requires floristic studies that support conservation programs. This study estimates the number of cacti species present in Venezuela, and it contributes to the knowledge of the family in the country by reviewing herbaria specimens. The information came from the herbaria (FLASA, IUTAG, HERZU, HMBLUZ, MER, MY, MYF, PORT and VEN) of the country. It was transcribed into a database and organized by herbaria, genus and species, based on the labels of the exsiccatae and digital photographs of the specimens. In addition, foreign specialists were consulted to resolve doubts about the identity of some taxa. The botanical specimens reviewed totaled 2,293. In Venezuela the family Cactaceae is represented by 26 genera, 63 species, 13 synonymies, six subspecies, one variety and 17 genera with unidentified species, including wild, cultivated and endemic species. Opuntia stood out for its greatest number of species (15), followed by the genera Melocactus (10), Epiphyllum and Cereus (6), Selenicereus, Pilosocereus and Cylindropuntia (4), Hylocereus (3), Rhipsalis, Mammillaria, Pereskia and Leuenbergeria (2). The other genera presented one species. The information generated here can be an input for the design of strategies for conservation, selection, production or other uses of the species of this important botanical group.
摘要/ Abstract摘要:仙人掌科被子植物属(actacae -被子植物科)，原产于美洲，在世界范围内自然分布，具有广阔的经济生态学前景;作为一个受威胁的群体，它需要植物区系研究来支持保护计划。本研究估计了委内瑞拉仙人掌种类的数量，并通过审查植物标本有助于了解该国的仙人掌科。资料来自该国的植物标本室(FLASA、IUTAG、HERZU、HMBLUZ、MER、MY、MYF、PORT和VEN)。它被转录到一个数据库中，并根据标本的残基标签和数码照片，按植物标本室、属和种进行组织。此外，还咨询了外国专家，以解决对某些分类群身份的怀疑。经审查的植物标本总数为2293个。在委内瑞拉，仙人掌科有26属，63种，13个同义种，6个亚种，1个变种和17个未确定种的属，包括野生，栽培和特有种。以Opuntia属最多(15种)，其次为Melocactus属(10种)、Epiphyllum and Cereus属(6种)、Selenicereus属、Pilosocereus和clindropuntia属(4种)、Hylocereus属(3种)、Rhipsalis、Mammillaria、Pereskia和Leuenbergeria属(2种)。这里产生的信息可以作为设计保护、选择、生产或其他利用这一重要植物群的策略的输入。
{"title":"Cactaceae Inventory of Venezuela: Estimates from Herbarium Collections","authors":"A. Sánchez-Urdaneta, Ciolys Beatriz Colmenares de Ortega, Jorge Ortega-Alcalá, Gisela del Carmen Rivero-Maldonado, Darisol Lisbeth Pacheco-Rivera, Guillermo Antonio Sthormes-Méndez, B. Bracho-Bravo, Bernardette Medina, Vicky de La Cruz Chirinos-Moreno, Ernesto Suarez-Calleja, Betzabeth del Consuelo Gil, Dianelis del Carmen Sánchez-Urdaneta, Steve Simón Belzares-Barboza, C. B. Peña-Valdivia, J. A. Reyes-Agüero, Y. Terán, Ramón Antonio D'Aubeterre-Marcano, Joël Lodé","doi":"10.2985/026.029.0110","DOIUrl":"https://doi.org/10.2985/026.029.0110","url":null,"abstract":"Abstract: Cactaceae-Angiospermae, of American origin, with worldwide naturalized distribution, includes promising species in economics and ecology; being a threatened group, it requires floristic studies that support conservation programs. This study estimates the number of cacti species present in Venezuela, and it contributes to the knowledge of the family in the country by reviewing herbaria specimens. The information came from the herbaria (FLASA, IUTAG, HERZU, HMBLUZ, MER, MY, MYF, PORT and VEN) of the country. It was transcribed into a database and organized by herbaria, genus and species, based on the labels of the exsiccatae and digital photographs of the specimens. In addition, foreign specialists were consulted to resolve doubts about the identity of some taxa. The botanical specimens reviewed totaled 2,293. In Venezuela the family Cactaceae is represented by 26 genera, 63 species, 13 synonymies, six subspecies, one variety and 17 genera with unidentified species, including wild, cultivated and endemic species. Opuntia stood out for its greatest number of species (15), followed by the genera Melocactus (10), Epiphyllum and Cereus (6), Selenicereus, Pilosocereus and Cylindropuntia (4), Hylocereus (3), Rhipsalis, Mammillaria, Pereskia and Leuenbergeria (2). The other genera presented one species. The information generated here can be an input for the design of strategies for conservation, selection, production or other uses of the species of this important botanical group.","PeriodicalId":50413,"journal":{"name":"Haseltonia","volume":"16 1","pages":"67 - 82"},"PeriodicalIF":1.5,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77090957","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}
{"title":"From the Editor","authors":"","doi":"10.2985/026.029.0101","DOIUrl":"https://doi.org/10.2985/026.029.0101","url":null,"abstract":"","PeriodicalId":50413,"journal":{"name":"Haseltonia","volume":"42 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"136244714","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}
Abstract: Smicrostigma warmwaterbergense is described from the summit of the Warmwaterberg on the Little Karoo of the Western Cape. It resembles S. viride in its habit and leaves but differs in that the flowers open during the day and close at night and the reproductive parts are fully visible when the flowers are open. The new species highlights the close links of Smicrostigma to Octopoma and Zeuktophyllum, which are also centered on the Little Karoo and share the leaves with a smooth surface, solitary, (sub-) sessile flowers and many-locular fruits. Namaquanthus cephalophylloides is described from patches of quartz-gravel north of Kleinzee in Namaqualand in the Northern Cape. This new species shares with N. vanheerdei the thick, finger-shaped leaves and distinctly echinate seeds but differs from it by its dwarf habit, its gray leaves and downward-pointing fruit, which drop off once mature.
{"title":"Two New Species of Aizoaceae (Ruschieae, Ruschoideae) from the Cape, South Africa.","authors":"C. Klak, P. Hanáček, P. Bruyns","doi":"10.2985/026.029.0103","DOIUrl":"https://doi.org/10.2985/026.029.0103","url":null,"abstract":"Abstract: Smicrostigma warmwaterbergense is described from the summit of the Warmwaterberg on the Little Karoo of the Western Cape. It resembles S. viride in its habit and leaves but differs in that the flowers open during the day and close at night and the reproductive parts are fully visible when the flowers are open. The new species highlights the close links of Smicrostigma to Octopoma and Zeuktophyllum, which are also centered on the Little Karoo and share the leaves with a smooth surface, solitary, (sub-) sessile flowers and many-locular fruits. Namaquanthus cephalophylloides is described from patches of quartz-gravel north of Kleinzee in Namaqualand in the Northern Cape. This new species shares with N. vanheerdei the thick, finger-shaped leaves and distinctly echinate seeds but differs from it by its dwarf habit, its gray leaves and downward-pointing fruit, which drop off once mature.","PeriodicalId":50413,"journal":{"name":"Haseltonia","volume":"25 1","pages":"16 - 23"},"PeriodicalIF":1.5,"publicationDate":"2023-03-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74633876","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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