Pub Date : 2022-09-16DOI: 10.1600/036364422X16573019348391
Maribel Herrera-Palma, C. Stirton, Liz K. Ruiz-Bohórquez, R. Callejas-Posada, D. Cardoso
Abstract The new species Ormosia corcovada (Fabaceae, Papilionoideae, Ormosieae) from the lower Cauca River basin in NW Colombia is described and illustrated, and its taxonomic affinities are discussed. Specimens of Ormosia corcovada are usually confused with Ormosia holerythra. Both species belong to Ormosia section Unicolores but are geographically and morphologically distinct, especially with respect to leaflet shape and number of secondary veins. Resumen Se describe Ormosia corcovada (Fabaceae, Papilionoideae, Ormosieae), una nueva especie de la región del Bajo Cauca, NO de Colombia. La nueva especie se ilustra y se discuten sus relaciones taxonómicas. Los especímenes de Ormosia corcovada son usualmente determinados como Ormosia holerythra Ducke. Ambas especies pertenecen a Ormosia sección Unicolores, pero su distribución geográfica y morfología, principalmente de folíolos y número de nervaduras secundarias, son diferentes.
{"title":"Ormosia corcovada, a New Papilionoid Legume from the Bajo Cauca Region of Northeastern Colombia","authors":"Maribel Herrera-Palma, C. Stirton, Liz K. Ruiz-Bohórquez, R. Callejas-Posada, D. Cardoso","doi":"10.1600/036364422X16573019348391","DOIUrl":"https://doi.org/10.1600/036364422X16573019348391","url":null,"abstract":"Abstract The new species Ormosia corcovada (Fabaceae, Papilionoideae, Ormosieae) from the lower Cauca River basin in NW Colombia is described and illustrated, and its taxonomic affinities are discussed. Specimens of Ormosia corcovada are usually confused with Ormosia holerythra. Both species belong to Ormosia section Unicolores but are geographically and morphologically distinct, especially with respect to leaflet shape and number of secondary veins. Resumen Se describe Ormosia corcovada (Fabaceae, Papilionoideae, Ormosieae), una nueva especie de la región del Bajo Cauca, NO de Colombia. La nueva especie se ilustra y se discuten sus relaciones taxonómicas. Los especímenes de Ormosia corcovada son usualmente determinados como Ormosia holerythra Ducke. Ambas especies pertenecen a Ormosia sección Unicolores, pero su distribución geográfica y morfología, principalmente de folíolos y número de nervaduras secundarias, son diferentes.","PeriodicalId":54438,"journal":{"name":"Systematic Botany","volume":"47 1","pages":"861 - 868"},"PeriodicalIF":1.0,"publicationDate":"2022-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45344423","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-16DOI: 10.1600/036364422X16573019348229
S. Sotuyo, J. L. Contreras-Jiménez, L. Rico-Arce
Abstract A new species of the genus Coulteria from the seasonally dry forest of the Rio Balsas Depression, Mexico is described and illustrated. Coulteria sousae is morphologically most similar to Coulteria pringlei but differs from it by having smaller flowers (1 cm long), long stipitate fruit, leaflets that are glabrous and coriaceous at maturity, and an allopatric distribution. The conservation status of this species is suggested to be Endangered (EN), according to the IUCN Red List Categories and Criteria.
{"title":"Coulteria sousae (Leguminosae: Caesalpinioideae), a New Species from the Rio Balsas Depression, Mexico","authors":"S. Sotuyo, J. L. Contreras-Jiménez, L. Rico-Arce","doi":"10.1600/036364422X16573019348229","DOIUrl":"https://doi.org/10.1600/036364422X16573019348229","url":null,"abstract":"Abstract A new species of the genus Coulteria from the seasonally dry forest of the Rio Balsas Depression, Mexico is described and illustrated. Coulteria sousae is morphologically most similar to Coulteria pringlei but differs from it by having smaller flowers (1 cm long), long stipitate fruit, leaflets that are glabrous and coriaceous at maturity, and an allopatric distribution. The conservation status of this species is suggested to be Endangered (EN), according to the IUCN Red List Categories and Criteria.","PeriodicalId":54438,"journal":{"name":"Systematic Botany","volume":"47 1","pages":"691 - 696"},"PeriodicalIF":1.0,"publicationDate":"2022-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47950133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-16DOI: 10.1600/036364422X16573019348373
Mel de Castro Camelo, M. A. Coelho
Abstract During a collection expedition on the banks of the Inauiní River, in Terra Firme Forest, near the town of Boca do Acre, Amazonas State, an unknown species of Anthurium with the shortest known spadix was found. It is described and illustrated here as a new species, Anthurium bovinii. Additional information on phenology, ecology, distribution, and comparison with closely related taxa are presented.
摘要在亚马逊州Boca do Acre镇附近的Terra Firme森林的Inauiní河畔进行的一次采集探险中，发现了一种未知的红掌，其锹形花序最短。它在这里被描述和说明为一个新的物种，牛掌。还介绍了有关酚学、生态学、分布以及与密切相关类群的比较的其他信息。
{"title":"A New Species of Anthurium (Araceae) from the Amazon Domain","authors":"Mel de Castro Camelo, M. A. Coelho","doi":"10.1600/036364422X16573019348373","DOIUrl":"https://doi.org/10.1600/036364422X16573019348373","url":null,"abstract":"Abstract During a collection expedition on the banks of the Inauiní River, in Terra Firme Forest, near the town of Boca do Acre, Amazonas State, an unknown species of Anthurium with the shortest known spadix was found. It is described and illustrated here as a new species, Anthurium bovinii. Additional information on phenology, ecology, distribution, and comparison with closely related taxa are presented.","PeriodicalId":54438,"journal":{"name":"Systematic Botany","volume":"47 1","pages":"846 - 852"},"PeriodicalIF":1.0,"publicationDate":"2022-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42586293","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-16DOI: 10.1600/036364422X16573019348201
Rafael COSTA-SILVA, Maria de Fátima Agra
Abstract Lycianthes, comprising approximately 200 species, is one of the largest genera of the Solanaceae family. The taxonomy of the genus is considered difficult, and for more than a century its species were included in Solanum. Despite its relative diversity, Lycianthes has only a small number of diagnostic characters and has accumulated nomenclatural and systematic problems throughout its history, reflecting its great similarity with Solanum. Information concerning the genus in Brazil is still scarce, and the present work was designed to provide a taxonomic treatment and revisionary study of the Brazilian members of Lycianthes. The circumscriptions of the species presented here are based on evaluations of more than 700 specimens from both Brazilian and foreign herbaria and the examination of types and images from virtual herbaria. Lycianthes is represented in Brazil by 12 species belonging to Lycianthes subgenus Polymeris, with three subordinate sections (Lycianthes sects. Asaropsis, Simplicipila, and Eupolymeris). We provide keys to separate the three sections and the 12 Brazilian species of Lycianthes and include synonymy, typification, updated descriptions, distributions, and illustrations of all treated species.
{"title":"Taxonomic Revision of Lycianthes (Capsiceae, Solanaceae) in Brazil","authors":"Rafael COSTA-SILVA, Maria de Fátima Agra","doi":"10.1600/036364422X16573019348201","DOIUrl":"https://doi.org/10.1600/036364422X16573019348201","url":null,"abstract":"Abstract Lycianthes, comprising approximately 200 species, is one of the largest genera of the Solanaceae family. The taxonomy of the genus is considered difficult, and for more than a century its species were included in Solanum. Despite its relative diversity, Lycianthes has only a small number of diagnostic characters and has accumulated nomenclatural and systematic problems throughout its history, reflecting its great similarity with Solanum. Information concerning the genus in Brazil is still scarce, and the present work was designed to provide a taxonomic treatment and revisionary study of the Brazilian members of Lycianthes. The circumscriptions of the species presented here are based on evaluations of more than 700 specimens from both Brazilian and foreign herbaria and the examination of types and images from virtual herbaria. Lycianthes is represented in Brazil by 12 species belonging to Lycianthes subgenus Polymeris, with three subordinate sections (Lycianthes sects. Asaropsis, Simplicipila, and Eupolymeris). We provide keys to separate the three sections and the 12 Brazilian species of Lycianthes and include synonymy, typification, updated descriptions, distributions, and illustrations of all treated species.","PeriodicalId":54438,"journal":{"name":"Systematic Botany","volume":"47 1","pages":"642 - 666"},"PeriodicalIF":1.0,"publicationDate":"2022-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43542470","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-16DOI: 10.1600/036364422X16573019348346
Diego Santos, M. D. da Silva, M. T. Buril
Abstract Evolvulus linarioides has frequently been confused with E. saxifragus due to overlap of their morphological characters. A careful morphological analysis of herbarium specimens and protologues evidenced no support for considering the two taxa as distinct entities. We therefore propose here the synonymization of E. linarioides under E. saxifragus, and we propose a neotype for the name now synonymized. In addition, we found that the morphotype often cited as E. linarioides from Bahia State, Brazil, cannot be included among the morphological variations of E. saxifragus, being distinguished by leaf size, prominence of the main vein, the length of the peduncle in relation to the pedicel, the presence of epidermal vesicles on anthers, the lengths of the styles, and the shapes of their stigmas and papillae. We therefore propose this morphotype as a new species, E. longipedicellatus, endemic to the Caatinga domain. A complete morphological description, illustrations, taxonomic and ecological comments, conservation status, morphoanatomical data, and a distribution map are provided. Resumo Evolvulus linarioides tem sido frequentemente confundida com E. saxifragus, devido à sobreposição de seus caracteres morfológicos. A partir de análises morfológicas cuidadosas de espécimes em herbários e dos protólogos, nós interpretamos que não há caracteres para considerar os dois táxons como entidades distintas. Com isso, nós propomos aqui a sinonimização de E. linarioides sob E. saxifragus, e propomos um neótipo para o nome agora sinonimizado. Além disso, constatamos que o morfotipo do estado da Bahia, frequentemente nomeado como E. linarioides, não pode ser incluído na variação morfológica de E. saxifragus. Tais espécimes podem ser diferenciados pelo tamanho das folhas, proeminência da nervura principal, comprimento do pedúnculo em relação ao pedicelo, presença de vesículas epidérmicas nas anteras, comprimento dos estiletes e forma dos estigmas e de suas papilas. Considerando isso, propomos esse morfotipo como uma nova espécie, E. longipedicellatus, até o momento endêmica da Caatinga. Nós fornecemos descrição morfológica, ilustrações, comentários ecológicos e taxonômicos, status de conservação, dados morfoanatômicos e mapa de distribuição.
摘要:linarioides与E. saxifragus由于形态特征的重叠而经常被混淆。对植物标本馆标本和原始物种的仔细形态学分析表明，没有证据支持将这两个分类群视为不同的实体。因此，我们在此提出在沙盆草下的linarioides的同义性，并为现在同义的名称提出了一个新类型。此外，我们还发现，通常被引用为巴西巴伊亚州的E. linarioides的形态型不能被包括在沙盆草的形态变异中，其特征是叶片大小、主脉的突出程度、花梗相对于花梗的长度、花药上表皮囊泡的存在、花柱的长度以及柱头和乳突的形状。因此，我们提出这种形态作为一个新种，E. longgipedicellatus，特有种Caatinga域。提供了完整的形态描述，插图，分类和生态评论，保护状况，形态解剖学数据和分布图。resume o Evolvulus linarioides tem sido frequentemente confundida com E. saxifragus, devido sobreposial o de seus characters morfológicos。A partipartide análises morfológicas cuidadosas de espacimes herbários e dos protólogos, nós interpretamos que n o h字符para考虑os dois táxons como entidades distinct。Com isso, nós propromos aqui a sinonizizaal。alsamm disso，巴西州morfotipo的constatamos que，巴西州morfotipo的frequentemente noomado como linarioides，巴西州的nestado pode ser incluído和巴西州的varatal o morfológica de saxifragus。主要的神经系统，主要的神经系统，主要的神经系统，主要的神经系统，主要的神经系统，主要的神经系统，主要的神经系统，主要的神经系统，主要的神经系统，主要的神经系统，主要的神经系统，主要的神经系统，主要的神经系统，主要的神经系统，主要的神经系统，主要的神经系统，主要的神经系统。考虑到这一点，建议在今后一段时间内，在今后的一段时间内，在今后的一段时间内，在今后的一段时间内，在今后的一段时间内，在今后的一段时间内，在今后的一段时间内，在今后的一段时间内。Nós fornecemos description o morfológica, ilustrações, comentários ecológicos e taxonômicos, status de conserva o, dados morfoanatômicos e mapa de distribui o。
{"title":"Novelties in Evolvulus from the Caatinga Domain, Brazil: A New Synonym, a Neotypification, and a New Species Evidenced by Morphoanatomical Data","authors":"Diego Santos, M. D. da Silva, M. T. Buril","doi":"10.1600/036364422X16573019348346","DOIUrl":"https://doi.org/10.1600/036364422X16573019348346","url":null,"abstract":"Abstract Evolvulus linarioides has frequently been confused with E. saxifragus due to overlap of their morphological characters. A careful morphological analysis of herbarium specimens and protologues evidenced no support for considering the two taxa as distinct entities. We therefore propose here the synonymization of E. linarioides under E. saxifragus, and we propose a neotype for the name now synonymized. In addition, we found that the morphotype often cited as E. linarioides from Bahia State, Brazil, cannot be included among the morphological variations of E. saxifragus, being distinguished by leaf size, prominence of the main vein, the length of the peduncle in relation to the pedicel, the presence of epidermal vesicles on anthers, the lengths of the styles, and the shapes of their stigmas and papillae. We therefore propose this morphotype as a new species, E. longipedicellatus, endemic to the Caatinga domain. A complete morphological description, illustrations, taxonomic and ecological comments, conservation status, morphoanatomical data, and a distribution map are provided. Resumo Evolvulus linarioides tem sido frequentemente confundida com E. saxifragus, devido à sobreposição de seus caracteres morfológicos. A partir de análises morfológicas cuidadosas de espécimes em herbários e dos protólogos, nós interpretamos que não há caracteres para considerar os dois táxons como entidades distintas. Com isso, nós propomos aqui a sinonimização de E. linarioides sob E. saxifragus, e propomos um neótipo para o nome agora sinonimizado. Além disso, constatamos que o morfotipo do estado da Bahia, frequentemente nomeado como E. linarioides, não pode ser incluído na variação morfológica de E. saxifragus. Tais espécimes podem ser diferenciados pelo tamanho das folhas, proeminência da nervura principal, comprimento do pedúnculo em relação ao pedicelo, presença de vesículas epidérmicas nas anteras, comprimento dos estiletes e forma dos estigmas e de suas papilas. Considerando isso, propomos esse morfotipo como uma nova espécie, E. longipedicellatus, até o momento endêmica da Caatinga. Nós fornecemos descrição morfológica, ilustrações, comentários ecológicos e taxonômicos, status de conservação, dados morfoanatômicos e mapa de distribuição.","PeriodicalId":54438,"journal":{"name":"Systematic Botany","volume":"47 1","pages":"832 - 839"},"PeriodicalIF":1.0,"publicationDate":"2022-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"45355845","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-16DOI: 10.1600/036364422X16573019348265
Nguyen Van Ngoc, H. Son, Hoàng Thị Bình, S. Tagane, Y. Suyama, T. Yahara
Abstract Lithocarpus cadamensis Ngoc & Son, a new species of Fagaceae, is described and illustrated from Mt. Ca Dam, Tra Bong District, Quang Ngai Province, central Vietnam. The new species is characterized by its large leaf blades with long petioles, solitary and subsessile cupules which almost completely cover the nut, and spiny cupule scales, in a combination that clearly differs from the previously known species of Lithocarpus including the most similar species in the region, L. campylolepis, L. eucalyptifolius, and L. gougerotae. A MIG-seq phylogeny based on genome-wide SNPs reveals a phylogenetic position close to L. eucalyptifolius, from which the new species is differentiated by multiple morphological characters. A morphological description and comparison with related species, photographs, line drawing, preliminary conservation status, and DNA barcode sequences are provided for the new species.
{"title":"A New Species of Lithocarpus (Fagaceae) from Ca Dam Mountain of Quang Ngai Province, Vietnam","authors":"Nguyen Van Ngoc, H. Son, Hoàng Thị Bình, S. Tagane, Y. Suyama, T. Yahara","doi":"10.1600/036364422X16573019348265","DOIUrl":"https://doi.org/10.1600/036364422X16573019348265","url":null,"abstract":"Abstract Lithocarpus cadamensis Ngoc & Son, a new species of Fagaceae, is described and illustrated from Mt. Ca Dam, Tra Bong District, Quang Ngai Province, central Vietnam. The new species is characterized by its large leaf blades with long petioles, solitary and subsessile cupules which almost completely cover the nut, and spiny cupule scales, in a combination that clearly differs from the previously known species of Lithocarpus including the most similar species in the region, L. campylolepis, L. eucalyptifolius, and L. gougerotae. A MIG-seq phylogeny based on genome-wide SNPs reveals a phylogenetic position close to L. eucalyptifolius, from which the new species is differentiated by multiple morphological characters. A morphological description and comparison with related species, photographs, line drawing, preliminary conservation status, and DNA barcode sequences are provided for the new species.","PeriodicalId":54438,"journal":{"name":"Systematic Botany","volume":"47 1","pages":"729 - 737"},"PeriodicalIF":1.0,"publicationDate":"2022-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46965958","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-16DOI: 10.1600/036364422X16573019348364
Jovani B. S. Pereira, M. G. Nunes, P. Labiak
Abstract Anemia is one of the most diverse genera in Brazil, with about 60 species. Unlike many other ferns, species of Anemia are abundant in dry and rocky environments, with many of them being narrow endemics to the mountains of the Central Brazilian Cerrado. Besides its richness, several species of Anemia hybridize, and hybrids and polyploids are fairly common in the genus. During a field trip to the northernmost distribution of the Cerrado, we found an undescribed species that we describe herein – Anemia areniticola. We also describe a new hybrid, Anemia ×pirenopolitana, between two species in the Anemia elegans clade, which is the first record of a hybrid in this clade. We provide morphological descriptions and illustrations, and distribution maps for the new taxa, as well as comparisons with the most similar species. A key is also provided for the species in the Anemia elegans clade.
{"title":"Novelties in the Anemia elegans Clade (Anemiaceae), with a New Species and Nothospecies from Brazil","authors":"Jovani B. S. Pereira, M. G. Nunes, P. Labiak","doi":"10.1600/036364422X16573019348364","DOIUrl":"https://doi.org/10.1600/036364422X16573019348364","url":null,"abstract":"Abstract Anemia is one of the most diverse genera in Brazil, with about 60 species. Unlike many other ferns, species of Anemia are abundant in dry and rocky environments, with many of them being narrow endemics to the mountains of the Central Brazilian Cerrado. Besides its richness, several species of Anemia hybridize, and hybrids and polyploids are fairly common in the genus. During a field trip to the northernmost distribution of the Cerrado, we found an undescribed species that we describe herein – Anemia areniticola. We also describe a new hybrid, Anemia ×pirenopolitana, between two species in the Anemia elegans clade, which is the first record of a hybrid in this clade. We provide morphological descriptions and illustrations, and distribution maps for the new taxa, as well as comparisons with the most similar species. A key is also provided for the species in the Anemia elegans clade.","PeriodicalId":54438,"journal":{"name":"Systematic Botany","volume":"47 1","pages":"840 - 845"},"PeriodicalIF":1.0,"publicationDate":"2022-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42128644","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-16DOI: 10.1600/036364422X16573022073590
M. Windham, Kathryn T Picard, K. Pryer
Abstract Myriopteris scabra (until recently called Cheilanthes horridula) is a xeric-adapted fern species, endemic to the southwestern United States and northern Mexico. It is one of the most recognizable ferns in North America due to the unusual nature of the indument present on its adaxial leaf surfaces. This consists of rigid, multicellular trichomes with glassy, needle-like apices and compact conical bodies that are partially embedded in the leaf surface to form swollen, pustulate bases. Despite the seemingly distinctive nature of M. scabra, published chromosome counts indicate that collections assigned to this taxon encompass both diploids (n = 29) and tetraploids (n = 58). Here we investigate this case of cryptic diversity by integrating data from cytogenetic and spore analyses, observations of sporophyte morphology, and geographic distributions. Myriopteris scabra s.l. is shown to comprise two genetically disparate, morphologically recognizable taxa that exhibit little or no geographic overlap. The tetraploid taxon is described as a new species, M. grusziae, which completely supplants diploid M. scabra in the northeastern portion of its range (central Texas and south-central Oklahoma). This presumed allotetraploid is most like M. scabra but differs in having ultimate segments with adaxial trichomes that are longer, more flexible, mostly linear, and superficially attached. In addition, tetraploid M. grusziae has larger, more abundant scales that largely conceal the dark, sclerified leaf rachises, and it produces consistently larger spores than diploid M. scabra. We hypothesize that M. grusziae is an allotetraploid hybrid that acquired half of its chromosomes from M. scabra. However, the identity of the other diploid parent has yet to be resolved.
{"title":"Myriopteris grusziae: A New Species from Texas and Oklahoma Segregated from the Chihuahuan Desert Taxon M. scabra (Pteridaceae)","authors":"M. Windham, Kathryn T Picard, K. Pryer","doi":"10.1600/036364422X16573022073590","DOIUrl":"https://doi.org/10.1600/036364422X16573022073590","url":null,"abstract":"Abstract Myriopteris scabra (until recently called Cheilanthes horridula) is a xeric-adapted fern species, endemic to the southwestern United States and northern Mexico. It is one of the most recognizable ferns in North America due to the unusual nature of the indument present on its adaxial leaf surfaces. This consists of rigid, multicellular trichomes with glassy, needle-like apices and compact conical bodies that are partially embedded in the leaf surface to form swollen, pustulate bases. Despite the seemingly distinctive nature of M. scabra, published chromosome counts indicate that collections assigned to this taxon encompass both diploids (n = 29) and tetraploids (n = 58). Here we investigate this case of cryptic diversity by integrating data from cytogenetic and spore analyses, observations of sporophyte morphology, and geographic distributions. Myriopteris scabra s.l. is shown to comprise two genetically disparate, morphologically recognizable taxa that exhibit little or no geographic overlap. The tetraploid taxon is described as a new species, M. grusziae, which completely supplants diploid M. scabra in the northeastern portion of its range (central Texas and south-central Oklahoma). This presumed allotetraploid is most like M. scabra but differs in having ultimate segments with adaxial trichomes that are longer, more flexible, mostly linear, and superficially attached. In addition, tetraploid M. grusziae has larger, more abundant scales that largely conceal the dark, sclerified leaf rachises, and it produces consistently larger spores than diploid M. scabra. We hypothesize that M. grusziae is an allotetraploid hybrid that acquired half of its chromosomes from M. scabra. However, the identity of the other diploid parent has yet to be resolved.","PeriodicalId":54438,"journal":{"name":"Systematic Botany","volume":"47 1","pages":"876 - 886"},"PeriodicalIF":1.0,"publicationDate":"2022-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46660102","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-16DOI: 10.1600/036364422X16573019348292
S. Nepomuceno, Felipe Nollet, M. T. Buril
Abstract A new species from the Atlantic Forest of northeastern Brazil, Jacquemontia atlantica, is described and illustrated. A distribution map, karyological characters, and an identification key for the species of that genus found in the Atlantic Forest are also provided, and its informal conservation status is assessed according to IUCN criteria. Its relationships with Jacquemontia glaucescens and other morphologically close species are discussed.
{"title":"A New Jacquemontia (Convolvulaceae) Species from the Brazilian Atlantic Forest","authors":"S. Nepomuceno, Felipe Nollet, M. T. Buril","doi":"10.1600/036364422X16573019348292","DOIUrl":"https://doi.org/10.1600/036364422X16573019348292","url":null,"abstract":"Abstract A new species from the Atlantic Forest of northeastern Brazil, Jacquemontia atlantica, is described and illustrated. A distribution map, karyological characters, and an identification key for the species of that genus found in the Atlantic Forest are also provided, and its informal conservation status is assessed according to IUCN criteria. Its relationships with Jacquemontia glaucescens and other morphologically close species are discussed.","PeriodicalId":54438,"journal":{"name":"Systematic Botany","volume":"47 1","pages":"762 - 768"},"PeriodicalIF":1.0,"publicationDate":"2022-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"41660967","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
Pub Date : 2022-09-16DOI: 10.1600/036364422X16573019348319
Jonathan A. Flickinger, Eugenio Santiago‐Valentín, José Sustache‐Sustache, O. Monsegur-Rivera
Abstract The Lathberry Clade includes seven species of Eugenia sect. Umbellatae (Myrtaceae) distributed from Puerto Rico through the Lesser Antilles. Members of the Lathberry Clade are trees and shrubs distinguished from other Antillean species by a combination of dull twigs, glabrous leaves with a raised midvein, glomerate or fasciculate inflorescences predominantly borne below the leaves on old wood, closely spaced and ascending inflorescence bracts, spheroidal fruits turning red or purple at maturity with the calyx lobes erect or spreading and often torn away, and a unique, large deletion in the plastid psbA-trnH intergenic spacer region. We examined the morphology, leaf venation, and seed coat anatomy of the Lathberry Clade and constructed a phylogeny using non-coding nuclear genetic regions. The taxonomic treatment includes a key to the species, distribution maps, and extinction risk assessments. We recognize Eugenia sintenisii from Puerto Rico and E. cordata var. caribaea (nom. nov.) from the Lesser Antilles in place of E. cordata var. sintenisii and synonymize E. earhartii with E. stirpi-flora. Six lectotypes are designated.
摘要/ Abstract摘要:金蝇属伞形金蝇科(金蝇科)有7种，分布于波多黎各至小安的列斯群岛。树莓分支的成员是乔木和灌木，与其他安提列斯物种的区别在于:钝枝，无毛的叶，中脉凸起，球状或束状花序主要生在老木上的叶下，紧密间隔和上升的花序苞片，成熟时变成红色或紫色的球形果实，花萼裂片直立或展开，经常被撕下，在psbA-trnH基因间隔区有一个独特的大缺失。我们研究了蓝莓枝的形态、叶脉和种皮解剖，并利用非编码核遗传区构建了一个系统发育图。分类学处理包括物种的关键，分布图和灭绝风险评估。我们从波多黎各和小安的列斯群岛识别出e.c ordata var. caribaea(非11月)来代替e.c ordata var. sinintenisii，并将e.c earhartii与e.s terpi -flora同义。指定了六种类型。
{"title":"A Taxonomic Revision of the Lathberry Clade of Eugenia (Myrtaceae)","authors":"Jonathan A. Flickinger, Eugenio Santiago‐Valentín, José Sustache‐Sustache, O. Monsegur-Rivera","doi":"10.1600/036364422X16573019348319","DOIUrl":"https://doi.org/10.1600/036364422X16573019348319","url":null,"abstract":"Abstract The Lathberry Clade includes seven species of Eugenia sect. Umbellatae (Myrtaceae) distributed from Puerto Rico through the Lesser Antilles. Members of the Lathberry Clade are trees and shrubs distinguished from other Antillean species by a combination of dull twigs, glabrous leaves with a raised midvein, glomerate or fasciculate inflorescences predominantly borne below the leaves on old wood, closely spaced and ascending inflorescence bracts, spheroidal fruits turning red or purple at maturity with the calyx lobes erect or spreading and often torn away, and a unique, large deletion in the plastid psbA-trnH intergenic spacer region. We examined the morphology, leaf venation, and seed coat anatomy of the Lathberry Clade and constructed a phylogeny using non-coding nuclear genetic regions. The taxonomic treatment includes a key to the species, distribution maps, and extinction risk assessments. We recognize Eugenia sintenisii from Puerto Rico and E. cordata var. caribaea (nom. nov.) from the Lesser Antilles in place of E. cordata var. sintenisii and synonymize E. earhartii with E. stirpi-flora. Six lectotypes are designated.","PeriodicalId":54438,"journal":{"name":"Systematic Botany","volume":"47 1","pages":"769 - 801"},"PeriodicalIF":1.0,"publicationDate":"2022-09-16","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44268317","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：