Systematic Botany最新文献

{"title":"Ephedra kardangensis, a New Synonym of Ephedra gerardiana (Ephedraceae)","authors":"Z. A. Rather, A. A. Khuroo, Khalid Hussain, M. Dwivedi, Abdul Rashid Dar, Tanvir Ul Hassan Dar","doi":"10.1600/036364422X16674053033813","DOIUrl":"https://doi.org/10.1600/036364422X16674053033813","url":null,"abstract":"Abstract Detailed examination of the protologue, herbarium, and live specimens of Ephedra kardangensis revealed that this species actually corresponds to E. gerardiana. Therefore, we report here E. kardangensis as a new synonym of E. gerardiana. Discrepancies in the description, diagnosis, and type specimen of E. kardangensis are discussed. Morphometric and molecular analyses also supported synonymy of the species. We provide a detailed description, photographic illustrations of vegetative (habit, stem, and leaves), and reproductive characters (male and female strobili, seed bearing strobili, seed, and pollen) of E. gerardiana for the ease of proper identification.","PeriodicalId":54438,"journal":{"name":"Systematic Botany","volume":"47 1","pages":"903 - 914"},"PeriodicalIF":1.0,"publicationDate":"2022-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48460259","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}

{"title":"Phylogenetic Placement and Taxonomic Revision of the Genus Monochilus (Lamiaceae), a Rare Brazilian Endemic","authors":"G. Antar, Mallory Hays, R. Harley, B. Drew","doi":"10.1600/036364422X16674054154188","DOIUrl":"https://doi.org/10.1600/036364422X16674054154188","url":null,"abstract":"Abstract Monochilus (Lamiaceae) is an enigmatic genus endemic to Brazil with two rarely collected species currently recognized. Based on morphological features Monochilus is hypothesized to be closely related to Amasonia within subfamily Ajugoideae. However, Monochilus is one of the few genera within Lamiaceae never to be represented in a published molecular phylogenetic study, and thus has an uncertain placement with the subfamily. During recent herbarium exploration in association with the Flora of Brasil 2020 project, new specimens of Monochilus gloxinifolius and M. obovatus were uncovered. Based on this material, a new phylogeny of Ajugoideae was constructed based on nuclear ribosomal ITS and chloroplast matK and trnL-trnF markers. Monochilus, as previously hypothesized, is closely related to Amasonia and placed within Ajugoideae. We discuss the phylogenetic placement of the genus and provide a taxonomic revision with description, distribution maps, an identification key, preliminary conservation assessments, photographic plates, and comments on both the taxonomy and ecology of these two species. Additionally, we provide a lectotypification for M. gloxinifolius.","PeriodicalId":54438,"journal":{"name":"Systematic Botany","volume":"47 1","pages":"1112 - 1121"},"PeriodicalIF":1.0,"publicationDate":"2022-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43006229","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}

{"title":"Ruellia whitneyana, a New Species of Acanthaceae from Bolivia","authors":"Erin A. Manzitto‐Tripp, M. Luján, Dina Clark","doi":"10.1600/036364422X16674054154151","DOIUrl":"https://doi.org/10.1600/036364422X16674054154151","url":null,"abstract":"Abstract We here describe a new species of flowering plant to science, Ruellia whitneyana (Acanthaceae), so far known only from Bolivia. This species occupies wet forest understories associated with steep slopes and riparian environments, where plants grow directly atop slate rocks or among rocky soils. We postulate that this new species is of hybrid origin between Ruellia brevifolia and Ruellia puri based on recurrent sympatry and simultaneous co-flowering, intermediate vegetative and floral morphological features, and evidence from genomic and palynological data.","PeriodicalId":54438,"journal":{"name":"Systematic Botany","volume":"47 1","pages":"1107 - 1111"},"PeriodicalIF":1.0,"publicationDate":"2022-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47812345","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}

{"title":"Clarification of the Type of Pariana maynensis (Poaceae, Bambusoideae) Reveals a New Species Housed in Herbarium for 118 Years","authors":"F. Ferreira, V. Hollowell, R. P. de Oliveira, P. Viana, Cassiano A. Dorneles Welker","doi":"10.1600/036364422X16674054154160","DOIUrl":"https://doi.org/10.1600/036364422X16674054154160","url":null,"abstract":"Abstract For almost 30 yr it was believed that the holotype of Pariana maynensis (Huber 1440) was lost. Based on this, a neotype housed at the MG herbarium, Pará, Brazil (Huber 4296, MG) was proposed by V. C. Hollowell in her treatment of Pariana for Flora Mesoamericana. During recent review of the Pariana collections of the MG herbarium, the type specimen supposedly lost was rediscovered. Here we recognize the holotype status of the Huber 1440 (MG) specimen. In the process, we also resolved a 118-yr-old enigma regarding a similar specimen, Huber 4296 (MG), which is a new species formally described here as Pariana huberi. In addition to the description of the new species, an emended description of P. maynensis, and a comparison with morphologically similar species are provided, as well as an updated distribution map and an informal conservation status for both species.","PeriodicalId":54438,"journal":{"name":"Systematic Botany","volume":"47 1","pages":"943 - 951"},"PeriodicalIF":1.0,"publicationDate":"2022-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48225950","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}

{"title":"A New Endemic Species of Loasa ser. Macrospermae (Loasaceae) from Northern Chile","authors":"Ludovica Santilli, Nicolás Lavandero, C. de Schrevel, P. Dandois, Rafael Acuña‐Castillo","doi":"10.1600/036364422X16674054154179","DOIUrl":"https://doi.org/10.1600/036364422X16674054154179","url":null,"abstract":"Abstract A new species of Loasa, endemic to the northern Andes of Chile, is described and informally evaluated, under the IUCN criteria for conservation, as Critically Endangered. Molecular analyses based on plastid markers place the new species within the Loasa ser. Macrospermae, with high support, and specifically as sister to Loasa acerifolia. A key to and comparative plates including all the 13 known species of Loasa ser. Macrospermae are provided.","PeriodicalId":54438,"journal":{"name":"Systematic Botany","volume":"47 1","pages":"1065 - 1079"},"PeriodicalIF":1.0,"publicationDate":"2022-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"48630755","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}

{"title":"An Overlooked New Species of Macroptilium (Leguminosae-Papilionoideae) from Northeastern Brazil","authors":"Carolina Lima Ribeiro, Cristiane Snak, Felipe da Silva Santos, L. P. de Queiroz","doi":"10.1600/036364422X16674053033840","DOIUrl":"https://doi.org/10.1600/036364422X16674053033840","url":null,"abstract":"Abstract A new species of Macroptilium from seasonally dry tropical forests and woodlands (SDTFW) from Northeastern Brazil is described herein. Macroptilium albidum can be characterized by its flowers with whitish or greenish petals, a fascicle of bracts in two tufts near the base of the peduncle, floral bracts, and bracteoles equal or slightly longer than the length of the calyx. Illustrations, taxonomic comments, a distribution map, and an identification key to the species of Macroptilium from Northeastern Brazil are provided.","PeriodicalId":54438,"journal":{"name":"Systematic Botany","volume":"47 1","pages":"1025 - 1030"},"PeriodicalIF":1.0,"publicationDate":"2022-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"47822602","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}

{"title":"Phylogenetic Position of Centroglossa and Dunstervillea (Ornithocephalus Clade: Oncidiinae: Orchidaceae) Based on Molecular and Morphological Data","authors":"Carla A Royer, A. L. V. TOSCANO DE BRITO, A. V. Mauad, E. Smidt","doi":"10.1600/036364422X16674053033877","DOIUrl":"https://doi.org/10.1600/036364422X16674053033877","url":null,"abstract":"Abstract Even though the monophyly of the Ornithocephalus clade (Oncidiinae) is currently well defined, the systematic positioning of Centroglossa and Dunstervillea remains obscure in the clade due to the absence in previous phylogenetic studies. Centroglossa has a very similar habit and is indistinguishable from Zygostates, whereas Dunstervillea has as its main characteristic the calcarate labellum, also found in Centroglossa. We clarify the systematic and phylogenetic positioning of Centroglossa and Dunstervillea in the Ornithocephalus clade (OC) through analysis of maximum likelihood, Bayesian inference, and maximum parsimony from molecular data (nrITS and matK cpDNA) and morphology. Our results indicate that Dunstervillea is phylogenetically close to Eloyella; both genera have a psigmoid habit, single-sided and flattened leaves, floral perianth with the same coloring, petals with entire margins, and a short rostellum. Centroglossa appears as a subclade within Zygostates. In addition to several homoplastic features, these two genera have the dorsal position of viscidium as a synapomorphy. The calcarate labellum, common to Centroglossa and Dunstervillea, originated more than once in the OC. Based on the phylogenetic results, we propose the nomenclatural changes to include Dunstervillea in Eloyella and Centroglossa in Zygostates. New synonyms are indicated to Zygostates greeniana and Z. nunes-limae and lectotypes are indicated to Centroglossa macroceras and C. glaziovii.","PeriodicalId":54438,"journal":{"name":"Systematic Botany","volume":"47 1","pages":"927 - 937"},"PeriodicalIF":1.0,"publicationDate":"2022-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"46105356","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}

{"title":"Inselbergs Again: Four New Species of Mandevilla (Apocynaceae) from Brazil","authors":"J. Morales, A. Fontana, L. J. C. Kollmann, C. N. Fraga","doi":"10.1600/036364422X16674053033912","DOIUrl":"https://doi.org/10.1600/036364422X16674053033912","url":null,"abstract":"Abstract Four new species of Mandevilla from inselbergs in Espírito Santo, Brazil are described, including illustrations, and maps. Mandevilla declinata resembles M. crassinoda but differs by leaf blades acuminate to long acuminate and longer corolla. Mandevilla fornograndensis is distinguished from morphologically similar species by its yellow corolla. Mandevilla mysteriosa is morphologically similar to M. lucida but differs by its longer petioles, leaf blade characters, shorter corolla tube, and smaller anthers; Mandevilla obovata resembles M. hatschbachii, but it is separated by its puberulent leaves, longer sepals, and white corolla. An informal evaluation of the conservation status according to IUCN guidelines is proposed for each species: M. declinata (VU: D2), M. fornograndensis (VU: D2), M. mysteriosa (VU: D2), and M. obovata (VU: B1ab(i,ii,iii)+2ab(i,ii,iii)). A key to the species of Mandevilla in Espírito Santo is included. Resumo Quatro novas espécies de Mandevilla são descritas dos inselbergs do estado do Espírito Santo, Brasil, incluindo ilustrações e mapas. Mandevilla declinata assemelha-se a M. crassinoda, diferindo pelas lâminas foliares acuminadas a longamente acuminadas e corola mais longa. Mandevilla fornograndensis distingue-se de espécies morfologicamente semelhantes pela sua corola amarela. Mandevilla mysteriosa é morfologicamente semelhante a M. lucida, mas difere desta pelos pecíolos mais longos, caracteres das lâminas foliares, tubo de corola mais curto e anteras menores. Mandevilla obovata assemelha-se a M. hatschbachii, mas é diferenciada por suas folhas puberulentas, sépalas mais longas e corola branca. A avaliação informal do estado de conservação de cada espécie foi realizada de acordo com os critérios da IUCN: M. declinata (VU: D2), M. fornograndensis (VU: D2), M. mysteriosa (VU: D2), and M. obovata (VU: B1ab(i,ii,iii)+2ab(i,ii,iii)). É apresentada uma chave para identificação das oito espécies de Mandevilla do Espírito Santo.","PeriodicalId":54438,"journal":{"name":"Systematic Botany","volume":"47 1","pages":"1080 - 1093"},"PeriodicalIF":1.0,"publicationDate":"2022-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43518774","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}

{"title":"A Taxonomic Synopsis of Aldina, a Florally Distinctive and Poorly Collected Amazonian Genus of Papilionoid Legumes","authors":"Gustavo Ramos, C. Zartman, H. C. de Lima, R. Pennington, D. Cardoso","doi":"10.1600/036364422X16674053033859","DOIUrl":"https://doi.org/10.1600/036364422X16674053033859","url":null,"abstract":"Abstract We present a taxonomic synopsis of Aldina (Leguminosae, Papilionoideae), a poorly known Neotropical genus of predominantly Amazonian trees with unusual, non-papilionate flowers. Aldina is characterized by the combination of odd-foliolate leaves and flowers with radial symmetry, free and undifferentiated petals, an entire calyx, and free, numerous stamens. Difficulty accessing species in remote areas has led to poor representation in herbaria, and species descriptions based on scant material have led to a doubtful and confused taxonomy. Eighteen species are recognized here: A. aurea, A. auyantepuiensis, A. barnebyana, A. berryi, A. discolor, A. diplogyne, A. elliptica, A. heterophylla, A. insignis, A. kunhardtiana, A. latifolia, A. macrophylla, A. microphylla, A. occidentalis, A. paulberryi, A. petiolulata, A. polyphylla, and A. reticulata. The names A. amazonica, A. latifolia var. pubescens, A. insignis var. retusa, A. stergiosii, A. aquae-negrae, A. rio-negrae, and A. speciosa are newly synonymized. We lectotypify A. discolor, A. heterophylla, A. macrophylla, A. occidentalis, and A. polyphylla, and make a new combination, Aldina auyantepuiensis. All Aldina species are found in the Amazon basin. An identification key for all species, a color plate, diagnostic illustrations, and a map of geographic distribution of the genus are also presented. Resumo Este trabalho consiste no tratamento sinóptico de Aldina Endl. (Leguminosae, Papilionoideae), um gênero Neotropical de árvores de flores não papilionadas com distribuição predominante na bacia amazônica. Aldina é caracterizada pela combinação de folhas imparipinadas e flores com simetria radial, pétalas livres e indiferenciadas, cálice inteiro, e estames livres e numerosos. A dificuldade de acesso a espécies em áreas remotas, como a bacia amazônica, tem levado a uma pobre representação em herbários de gênero de importância ecológica como Aldina. Além disso, descrições taxonômicas baseadas em material escasso tem levado a uma taxonomia duvidosa e confusa desses grupos. Neste trabalho são reconhecidas dezoito espécies: A. aurea, A. auyantepuiensis, A. barnebyana, A. berryi, A. discolor, A. diplogyne, A. elliptica, A. heterophylla, A. insignis, A. kunhardtiana, A. latifolia, A. macrophylla, A. microphylla, A. occidentalis, A. paulberryi, A. petiolulata, A. polyphylla e A. reticulata. Os nomes A. amazonica, A. latifolia var. pubescens, A. insignis var. retusa, A. stergiosii, A. aquae-negrae, A. rio-negrae, e A. speciosa são sinonimizados aqui. Apresentamos também a lectotipificação de A. discolor, A. heterophylla, A. occidentalis, A. polyphylla e uma nova combinação em Aldina auyantepuiensis. Nesta sinopse apresentamos uma chave de identificação para todas as espécies, pranchas com imagens, ilustrações e um mapa com distribuição geográfica para o gênero.","PeriodicalId":54438,"journal":{"name":"Systematic Botany","volume":"47 1","pages":"962 - 977"},"PeriodicalIF":1.0,"publicationDate":"2022-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49188475","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}

{"title":"A Taxonomic Revision of Chamaecrista (Caesalpinioideae, Cassieae, Cassiinae) in Southern Africa","authors":"L. Musandiwa, A. Magee, J. Boatwright","doi":"10.1600/036364422X16674053033831","DOIUrl":"https://doi.org/10.1600/036364422X16674053033831","url":null,"abstract":"Abstract The southern African species of Chamaecrista were all treated under Cassia in Gordon-Gray's treatment for the Flora of Southern Africa. However, given the subsequent generic recircumscriptions in the subtribe Cassiinae, and the expanded collections of these taxa, there is a need to revisit the taxonomy of the group. The present study aimed to conduct a detailed taxonomic revision of the species of Chamaecrista indigenous to the flora of southern Africa region. Extensive fieldwork was carried out to study the taxa in their natural environment and morphological characters were additionally studied using herbarium material. The revision presented here includes comprehensive descriptions, a key to the species, nomenclature, typifications, diagnostic characters with illustrations, and geographical distribution maps of all recognised taxa. Eleven species of Chamaecrista are recognised for the flora of southern Africa, two of which are described as new, i.e. Chamaecrista grandiglandulata and C. gordon-grayei. In addition, one new subspecies is described, namely C. gordon-grayei subsp. longipedicellata, while Chamaecrista comosa var. capriconia is raised to the rank of subspecies, viz. Chamaecrista comosa subsp. capriconia. The typifications published here include lectotypes designated for Chamaecrista plumosa and C. stricta, neotypes designated for C. capensis var. flavescens, C. comosa, and C. plumosa var. diffusa, and an isolectotype designated for C. stricta.","PeriodicalId":54438,"journal":{"name":"Systematic Botany","volume":"47 1","pages":"992 - 1011"},"PeriodicalIF":1.0,"publicationDate":"2022-12-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"43220177","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}