Pub Date : 2023-04-28DOI: 10.1590/1677-941x-abb-2022-0266
J. Stehmann, J. Larocca
,
{"title":"Petunia toropiensis (Solanaceae): A surprising new species endemic from Toropi river basin in southern Brazil","authors":"J. Stehmann, J. Larocca","doi":"10.1590/1677-941x-abb-2022-0266","DOIUrl":"https://doi.org/10.1590/1677-941x-abb-2022-0266","url":null,"abstract":",","PeriodicalId":6902,"journal":{"name":"Acta Botanica Brasilica","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-04-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"88331771","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 : 2023-04-17DOI: 10.1590/1677-941x-abb-2022-0251
Mateus Oliveira da Cruz, L. Freitas, Francisca Robervânia Soares dos Santos, C. Souza-Motta, A. Santiago
Piptocephalis includes mycoparasitic fungi, mainly targeting mucoralean species. Until now, there has been no compilation of data on the taxonomy and geographic distribution of Piptocephalis , which is a barrier to the proper identification of species of this genus by taxonomists. The present study provides an overview of Piptocephalis with taxonomic and occurrence data, in addition to reporting P. graefenhanii and P. xenophila for the first time in South America. Both species were observed parasitizing Mucor spp. The P. graefenhanii was observed growing on paca dung and P. xenophila was observed on guinea-pig dung in Recife, northeastern Brazil. Aspects of their morphology are discussed and a key for the genus is presented.
{"title":"An overview on the mycoparasitic Piptocephalis (Zoopagomycota): taxonomic notes and geographic distribution with new occurrences for South America","authors":"Mateus Oliveira da Cruz, L. Freitas, Francisca Robervânia Soares dos Santos, C. Souza-Motta, A. Santiago","doi":"10.1590/1677-941x-abb-2022-0251","DOIUrl":"https://doi.org/10.1590/1677-941x-abb-2022-0251","url":null,"abstract":"Piptocephalis includes mycoparasitic fungi, mainly targeting mucoralean species. Until now, there has been no compilation of data on the taxonomy and geographic distribution of Piptocephalis , which is a barrier to the proper identification of species of this genus by taxonomists. The present study provides an overview of Piptocephalis with taxonomic and occurrence data, in addition to reporting P. graefenhanii and P. xenophila for the first time in South America. Both species were observed parasitizing Mucor spp. The P. graefenhanii was observed growing on paca dung and P. xenophila was observed on guinea-pig dung in Recife, northeastern Brazil. Aspects of their morphology are discussed and a key for the genus is presented.","PeriodicalId":6902,"journal":{"name":"Acta Botanica Brasilica","volume":"6 6 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-04-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"87274268","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 : 2023-04-03DOI: 10.1590/1677-941x-abb-2022-0264
Hélio Souza dos Reis, V. Santos, F. H. M. Silva, M. D. Saba
The aim of this study was to identify plant species visited by Apis mellifera L. in honey producing areas with typical Caatinga vegetation in the State of Bahia, as well as morphologically characterize pollen grains of the most representative species. Flowering specimens were collected from both areas, herborized, identified and deposited at the HUNEB herbarium. Analyses of floristic similarities were performed between eleven municipalities close to the study areas. Pollen was collected from all specimens, acetolyzed, measured, statistically analyzed, morphologically described, and photographed in light microscopy. Of the total of species recorded, 67.46 % were regarded as having beekeeping importance, with the richest botanical families being Fabaceae, Malvaceae and Asteraceae. Additionally, 37.5 % of the recorded species were herbs. The analyzed municipalities showed 84 % of floristic similarity. Of the total species recorded with visits by A. mellifera , 25.52 % had their pollen grains already described in the literature as monads, tetrads and polyads; isopolar, apolar and heteropolar; and mostly prolate spheroidal shape. Sizes varied from small to large, and the amb circular was predominant. The exine ornamentation was greatly diversified, varying from psilate to echinate. The obtained data corroborate the palynological knowledge of plants regarded as having beekeeping importance within the Caatinga.
{"title":"Floristic characterization and pollen morphology of plants visited by Apis mellifera L. in caatinga areas in Bahia, Brazil","authors":"Hélio Souza dos Reis, V. Santos, F. H. M. Silva, M. D. Saba","doi":"10.1590/1677-941x-abb-2022-0264","DOIUrl":"https://doi.org/10.1590/1677-941x-abb-2022-0264","url":null,"abstract":"The aim of this study was to identify plant species visited by Apis mellifera L. in honey producing areas with typical Caatinga vegetation in the State of Bahia, as well as morphologically characterize pollen grains of the most representative species. Flowering specimens were collected from both areas, herborized, identified and deposited at the HUNEB herbarium. Analyses of floristic similarities were performed between eleven municipalities close to the study areas. Pollen was collected from all specimens, acetolyzed, measured, statistically analyzed, morphologically described, and photographed in light microscopy. Of the total of species recorded, 67.46 % were regarded as having beekeeping importance, with the richest botanical families being Fabaceae, Malvaceae and Asteraceae. Additionally, 37.5 % of the recorded species were herbs. The analyzed municipalities showed 84 % of floristic similarity. Of the total species recorded with visits by A. mellifera , 25.52 % had their pollen grains already described in the literature as monads, tetrads and polyads; isopolar, apolar and heteropolar; and mostly prolate spheroidal shape. Sizes varied from small to large, and the amb circular was predominant. The exine ornamentation was greatly diversified, varying from psilate to echinate. The obtained data corroborate the palynological knowledge of plants regarded as having beekeeping importance within the Caatinga.","PeriodicalId":6902,"journal":{"name":"Acta Botanica Brasilica","volume":"15 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81824873","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 : 2023-04-03DOI: 10.1590/1677-941x-abb-2022-0245
Fabio Araújo da Silva, A. C. Feio, Ranielle de Araújo Mendonça, C. Kameyama, D. Zappi
The present survey of leaf-blade trichomes of Mendoncia used SEM and light microscopy to investigate the diversity of trichome types in Neotropical and Paleotropical species of the genus. The eglandular trichomes are filiform, uniseriate, with asymmetric epidermal cells arranged radially around the trichome, these epidermal cells may be short or elongated, oriented in two groups. These cells, when elongated, are covered with epicuticular wax, forming smooth thick plates. African species have dendritic but not stellate trichomes. Character states such as number and length of basal cells were shown to overlap within the same species and therefore their use in isolation is not recommended for subgeneric classification of Mendoncia . Neotropical Mendoncia trichomes with well-developed epidermal cells arranged radially around the trichome appear to be unique to this group, without parallel in other plant families.
{"title":"On the true identity of Mendoncia “stellate” trichomes","authors":"Fabio Araújo da Silva, A. C. Feio, Ranielle de Araújo Mendonça, C. Kameyama, D. Zappi","doi":"10.1590/1677-941x-abb-2022-0245","DOIUrl":"https://doi.org/10.1590/1677-941x-abb-2022-0245","url":null,"abstract":"The present survey of leaf-blade trichomes of Mendoncia used SEM and light microscopy to investigate the diversity of trichome types in Neotropical and Paleotropical species of the genus. The eglandular trichomes are filiform, uniseriate, with asymmetric epidermal cells arranged radially around the trichome, these epidermal cells may be short or elongated, oriented in two groups. These cells, when elongated, are covered with epicuticular wax, forming smooth thick plates. African species have dendritic but not stellate trichomes. Character states such as number and length of basal cells were shown to overlap within the same species and therefore their use in isolation is not recommended for subgeneric classification of Mendoncia . Neotropical Mendoncia trichomes with well-developed epidermal cells arranged radially around the trichome appear to be unique to this group, without parallel in other plant families.","PeriodicalId":6902,"journal":{"name":"Acta Botanica Brasilica","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-04-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89299840","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 : 2023-03-31DOI: 10.1590/1677-941x-abb-2022-0125
I. Fayyaz, M. Iqbal, N. Afshan, A. R. Niazi, A. Khalid
ABSTRACT Diploschistes pakistanicus sp. nov. is described from the Himalayan moist temperate forest, Pakistan. ITS sequences confirm its position within the genus Diploschistes and, together with its morphology and chemistry, suggest that it is separate from other species of this genus. The taxon is characterized by grey to greyish white pruinose thallus, perithecioid-type ascomata, small apothecia 0.1‒0.4 mm wide, hypothecium 20‒25µm thick, ascus of 85‒110 × 9‒17 µm in size, 3‒5 transverse and 2‒4 longitudinal septa in large ascospores 42‒55 × 18‒30; also differing from related species in ITS region.
{"title":"Taxonomic and phylogenetic study of the genus Diploschistes (Ostropales, Thelotremataceae) reveals one new species from Pakistan","authors":"I. Fayyaz, M. Iqbal, N. Afshan, A. R. Niazi, A. Khalid","doi":"10.1590/1677-941x-abb-2022-0125","DOIUrl":"https://doi.org/10.1590/1677-941x-abb-2022-0125","url":null,"abstract":"ABSTRACT Diploschistes pakistanicus sp. nov. is described from the Himalayan moist temperate forest, Pakistan. ITS sequences confirm its position within the genus Diploschistes and, together with its morphology and chemistry, suggest that it is separate from other species of this genus. The taxon is characterized by grey to greyish white pruinose thallus, perithecioid-type ascomata, small apothecia 0.1‒0.4 mm wide, hypothecium 20‒25µm thick, ascus of 85‒110 × 9‒17 µm in size, 3‒5 transverse and 2‒4 longitudinal septa in large ascospores 42‒55 × 18‒30; also differing from related species in ITS region.","PeriodicalId":6902,"journal":{"name":"Acta Botanica Brasilica","volume":"94 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-03-31","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"90995135","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 : 2023-03-24DOI: 10.1590/1677-941x-abb-2022-0176
C. Serrote, L. Reiniger, Charlene Moro Stefanel, K. B. D. Silva, D. P. Golle
Microsatellites are short sequence repeats that make up the genomes of eukaryotes and prokaryotes. They are of great importance as DNA markers for studies in several fields of genetics. In the present review, we searched for studies published in the five years period of 2017 to 2021 regarding the use of microsatellites in studies with forest tree species from the Brazilian biomes, in order to examine the importance of these markers for forest resources conservation. We searched scientific papers in journals indexed on the Scopus and Web of Science databases. There were found 38 peer reviewed articles that used microsatellites in the Brazilian biomes. The Atlantic Forest was the biome with more studies (35.9 %) and most of the studies were published in 2018 (34.2 %). In addition, most of the studied species belonged to the Fabaceae family (34.2 %). The conclusions and recommendations made in these studies ratify the great contribution of microsatellite markers in the conservation of native forest species in Brazilian biomes.
{"title":"Microsatellites are important for forest genetic resources conservation in Brazilian biomes","authors":"C. Serrote, L. Reiniger, Charlene Moro Stefanel, K. B. D. Silva, D. P. Golle","doi":"10.1590/1677-941x-abb-2022-0176","DOIUrl":"https://doi.org/10.1590/1677-941x-abb-2022-0176","url":null,"abstract":"Microsatellites are short sequence repeats that make up the genomes of eukaryotes and prokaryotes. They are of great importance as DNA markers for studies in several fields of genetics. In the present review, we searched for studies published in the five years period of 2017 to 2021 regarding the use of microsatellites in studies with forest tree species from the Brazilian biomes, in order to examine the importance of these markers for forest resources conservation. We searched scientific papers in journals indexed on the Scopus and Web of Science databases. There were found 38 peer reviewed articles that used microsatellites in the Brazilian biomes. The Atlantic Forest was the biome with more studies (35.9 %) and most of the studies were published in 2018 (34.2 %). In addition, most of the studied species belonged to the Fabaceae family (34.2 %). The conclusions and recommendations made in these studies ratify the great contribution of microsatellite markers in the conservation of native forest species in Brazilian biomes.","PeriodicalId":6902,"journal":{"name":"Acta Botanica Brasilica","volume":"14 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-03-24","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85448984","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 : 2023-03-13DOI: 10.1590/1677-941x-abb-2022-0168
Rayleen Whaiti Lopes da Silva, Sarah Silva Machado, K. Faria, Fernanda Ancelmo de Oliveira, Anete Pereira de Souza, I. D. Menezes, Joaquim Manoel da Silva
Baru tree ( Dipteryx alata ) is an arboreal, fruitful plant native to the Cerrado biome with an important socioeconomic impact. Populations of this species are a good model to study anthropogenic disturbances on the biome through the genetic information. In this study, we developed seven new polymorphic microsatellite markers for D. alata, using an enriched genomic library. We performed loci characterization in three populations, obtaining a total of 49 alleles, with an average of 5 to 5.57 alleles per locus. A significant content of polymorphic information was obtained, as indicated by the average expected heterozygosity ( uHE ), with a total average of 0.58 to 0.65 per locus. The average value of the observed heterozygosity ( Ho ) was also high, with a total average of 0.73 to 0.85 per locus. Some of the loci are in linkage disequilibrium, such as DalatG6 with DalatB3, DalatH3 and DalatB4. The estimate of the combined loci for the probability of paternity exclusion obtained an average value of 1.00 for all loci, and the average combined probability of identity, the values were (1.2 10^-5 ) to (4.4 10^-6 ). All markers are informative and suitable for studies on genetic diversity and population structure, aiming at the conservation and management of the species.
{"title":"Molecular insight for baru Dipteryx alata (Fabaceae) populations based on novel SSRs","authors":"Rayleen Whaiti Lopes da Silva, Sarah Silva Machado, K. Faria, Fernanda Ancelmo de Oliveira, Anete Pereira de Souza, I. D. Menezes, Joaquim Manoel da Silva","doi":"10.1590/1677-941x-abb-2022-0168","DOIUrl":"https://doi.org/10.1590/1677-941x-abb-2022-0168","url":null,"abstract":"Baru tree ( Dipteryx alata ) is an arboreal, fruitful plant native to the Cerrado biome with an important socioeconomic impact. Populations of this species are a good model to study anthropogenic disturbances on the biome through the genetic information. In this study, we developed seven new polymorphic microsatellite markers for D. alata, using an enriched genomic library. We performed loci characterization in three populations, obtaining a total of 49 alleles, with an average of 5 to 5.57 alleles per locus. A significant content of polymorphic information was obtained, as indicated by the average expected heterozygosity ( uHE ), with a total average of 0.58 to 0.65 per locus. The average value of the observed heterozygosity ( Ho ) was also high, with a total average of 0.73 to 0.85 per locus. Some of the loci are in linkage disequilibrium, such as DalatG6 with DalatB3, DalatH3 and DalatB4. The estimate of the combined loci for the probability of paternity exclusion obtained an average value of 1.00 for all loci, and the average combined probability of identity, the values were (1.2 10^-5 ) to (4.4 10^-6 ). All markers are informative and suitable for studies on genetic diversity and population structure, aiming at the conservation and management of the species.","PeriodicalId":6902,"journal":{"name":"Acta Botanica Brasilica","volume":"1 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-03-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81597658","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 : 2023-03-10DOI: 10.1590/1677-941x-abb-2022-0104
C. M. Sosa, J. Puntieri
The development of scaly buds (= cataphylls) has been traditionally associated with seasonally cold climates, although only few species from the southern hemisphere were investigated in this regard. The present work focuses on apical and axillary buds of seven tree species native to the South-American Temperate Rainforests (STR). Due to differences in the lineages from which these species derived, high levels of inter-specific variation in bud structure were expected. Apical and axillary buds were dissected under stereomicroscope, and the sizes of their parent shoots were evaluated. Cataphylls and leaf primordia were counted, and the presence of colleters and/or trichomes registered. Both intra-and inter-specific variations in bud structure were found. The apical buds were scaly in two out of seven species, and naked in the other species. Axillary buds were scaly in all but one species. In general terms, larger shoots developed buds with more organs. The presence of colleters (in four species) was not restricted to those buds lacking an outer cover of cataphylls. Further studies should focus on the relevance at a broader scale of colleters and trichomes as protective structures in tree buds.
{"title":"Are scale leaves essencial in temperate-cold climates? An evaluation in tree species from temperate rainforests of South America","authors":"C. M. Sosa, J. Puntieri","doi":"10.1590/1677-941x-abb-2022-0104","DOIUrl":"https://doi.org/10.1590/1677-941x-abb-2022-0104","url":null,"abstract":"The development of scaly buds (= cataphylls) has been traditionally associated with seasonally cold climates, although only few species from the southern hemisphere were investigated in this regard. The present work focuses on apical and axillary buds of seven tree species native to the South-American Temperate Rainforests (STR). Due to differences in the lineages from which these species derived, high levels of inter-specific variation in bud structure were expected. Apical and axillary buds were dissected under stereomicroscope, and the sizes of their parent shoots were evaluated. Cataphylls and leaf primordia were counted, and the presence of colleters and/or trichomes registered. Both intra-and inter-specific variations in bud structure were found. The apical buds were scaly in two out of seven species, and naked in the other species. Axillary buds were scaly in all but one species. In general terms, larger shoots developed buds with more organs. The presence of colleters (in four species) was not restricted to those buds lacking an outer cover of cataphylls. Further studies should focus on the relevance at a broader scale of colleters and trichomes as protective structures in tree buds.","PeriodicalId":6902,"journal":{"name":"Acta Botanica Brasilica","volume":"30 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-03-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86571628","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 : 2023-03-03DOI: 10.1590/1677-941x-abb-2022-0152
L. Funez, Felipe Bittencourt, Marcel Comin, A. L. Gasper
Nicotiana azambujae is an endemic species from Santa Catarina state, southern Brazil, that was described in 1964 and has not been seen since then. During fieldwork, we found a population in Alto Matador, about 70 km from the presumable type collection, after 73 years of its last known collection. Thus, we bring the first in vivo pictures of this species, assess its conservation status, update the morphologic description and discuss its habitat preferences. Also, we discuss a possible mistake in the type of voucher label from the originally collected locality
{"title":"Nicotiana azambujae (Solanaceae): A wild tobacco presumably extinct rediscovered after 73 years","authors":"L. Funez, Felipe Bittencourt, Marcel Comin, A. L. Gasper","doi":"10.1590/1677-941x-abb-2022-0152","DOIUrl":"https://doi.org/10.1590/1677-941x-abb-2022-0152","url":null,"abstract":"Nicotiana azambujae is an endemic species from Santa Catarina state, southern Brazil, that was described in 1964 and has not been seen since then. During fieldwork, we found a population in Alto Matador, about 70 km from the presumable type collection, after 73 years of its last known collection. Thus, we bring the first in vivo pictures of this species, assess its conservation status, update the morphologic description and discuss its habitat preferences. Also, we discuss a possible mistake in the type of voucher label from the originally collected locality","PeriodicalId":6902,"journal":{"name":"Acta Botanica Brasilica","volume":"55 5","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-03-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"72459993","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 : 2023-02-10DOI: 10.1590/1677-941x-abb-2022-0252
P. Cardoso, N. O’Leary, Luiz Menini Neto, M. Trovó
Stachytarpheta is the second largest genus of Verbenaceae, mainly distributed in xeric habitats of South America. The morphological revision of South American specimens clarified the taxonomic identity of three previously accepted species from informal group Gesnerioides: S. sprucei (from the Amazon Forest domain), S. alata , and S. tomentosa (from the Atlantic Forest domain). A new taxonomic arrangement is proposed here, with the synonymization of S. alata and S. tomentosa under S. sprucei . Consequently, the newly circumscribed S. sprucei evidences a remarkable geographic disjunction, with populations separated by the Caatinga, Cerrado, and Chaco domains (the South American dry diagonal). It inhabits inselbergs, tepuis, and savannas in the Amazon Forest domain, and top of inselbergs surrounded by forest in the Atlantic Forest domain. A detailed species description, taxonomic comments, a geographic distribution map, photos of living specimens, and an identification key to the species from the Gesnerioides group are included.
{"title":"Redefinition of Stachytarpheta sprucei (Verbenaceae) reveals a remarkable geographic disjunction in tropical forests of South America","authors":"P. Cardoso, N. O’Leary, Luiz Menini Neto, M. Trovó","doi":"10.1590/1677-941x-abb-2022-0252","DOIUrl":"https://doi.org/10.1590/1677-941x-abb-2022-0252","url":null,"abstract":"Stachytarpheta is the second largest genus of Verbenaceae, mainly distributed in xeric habitats of South America. The morphological revision of South American specimens clarified the taxonomic identity of three previously accepted species from informal group Gesnerioides: S. sprucei (from the Amazon Forest domain), S. alata , and S. tomentosa (from the Atlantic Forest domain). A new taxonomic arrangement is proposed here, with the synonymization of S. alata and S. tomentosa under S. sprucei . Consequently, the newly circumscribed S. sprucei evidences a remarkable geographic disjunction, with populations separated by the Caatinga, Cerrado, and Chaco domains (the South American dry diagonal). It inhabits inselbergs, tepuis, and savannas in the Amazon Forest domain, and top of inselbergs surrounded by forest in the Atlantic Forest domain. A detailed species description, taxonomic comments, a geographic distribution map, photos of living specimens, and an identification key to the species from the Gesnerioides group are included.","PeriodicalId":6902,"journal":{"name":"Acta Botanica Brasilica","volume":"14 1","pages":""},"PeriodicalIF":1.1,"publicationDate":"2023-02-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77367467","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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