Results 121 to 130 of about 466 (149)
Dispersing towards Madagascar: Biogeography and evolution of the Madagascan endemics of the Spermacoceae tribe (Rubiaceae) [PDF]
Molecular Phylogenetics and Evolution, 2016 Despite the close proximity of the African mainland, dispersal of plant lineages towards Madagascar remains intriguing. The composition of the Madagascan flora is rather mixed and shows besides African representatives, also floral elements of India, Southeast Asia, Australia, and the Neotropics.
Brecht Verstraete, Steven Dessein
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Evolution of woody life form on tropical mountains in the tribe Spermacoceae (Rubiaceae) [PDF]
American Journal of Botany, 2017 PREMISE OF THE STUDY:Spermacoceae are mainly an herbaceous group in the Rubiaceae. However, a few lineages are woody and are found in a diverse range of habitat types. Three of the largest woody lineages (Arcytophyllum, Hedyotis, and Kadua) are characterized by their distribution in the moist tropical mountains and have disjunct distribution patterns ...
Paul Lewis +2 more
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Gomphocalyx and Phylohydrax (Rubiaceae): sister taxa excluded from Spermacoceae s.s., featuring a remarkable case of convergent evolution [PDF]
Taxon, 2005 The genera Gomphocalyx and Phylohydrax (Rubiaceae) have been invariably placed in the tribe Spermacoceae s.s. based on the uni-ovulate ovary locules and pluri-aperturate pollen grains.
Steven Dessein +2 more
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Nordic Journal of Botany, 2023
Borreria catolensis , described based on specimens lacking mature fruits and seeds, is here treated as a new synonym of Psyllocarpus intermedius (Rubiaceae, Spermacoceae), an endemic species from the state of Bahia, northeastern Brazil.
João A. M. Carmo +4 more
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Borreria catolensis , described based on specimens lacking mature fruits and seeds, is here treated as a new synonym of Psyllocarpus intermedius (Rubiaceae, Spermacoceae), an endemic species from the state of Bahia, northeastern Brazil.
João A. M. Carmo +4 more
openaire +2 more sources
Molecular Phylogenetics and Evolution, 2008
The phylogenetic utility of chloroplast (atpB-rbcL, petD, rps16, trnL-F) and nuclear (ETS, ITS) DNA regions was investigated for the tribe Spermacoceae of the coffee family (Rubiaceae). ITS was, despite often raised cautions of its utility at higher taxonomic levels, shown to provide the highest number of parsimony informative characters, in ...
Steven Dessein +2 more
exaly +3 more sources
The phylogenetic utility of chloroplast (atpB-rbcL, petD, rps16, trnL-F) and nuclear (ETS, ITS) DNA regions was investigated for the tribe Spermacoceae of the coffee family (Rubiaceae). ITS was, despite often raised cautions of its utility at higher taxonomic levels, shown to provide the highest number of parsimony informative characters, in ...
Steven Dessein +2 more
exaly +3 more sources
Lectotypification of Psyllocarpus schwackei (Spermacoceae, Rubiaceae)
Phytotaxa, 2017Psyllocarpus schwackei was described by Schumann (1898: 18), for which he cited a single collection, “in Brasiliae civitate Minas Geraes, locis arenosis in Serra do Cipo: Schwacke n, 8089, floret Aprili”. In a taxonomic revision of the genus, Kirkbride (1979) stated that the material studied by Schumann at the Botanical Museum in Berlin had been ...
Carmo, João A.M. +3 more
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Taxon, 2009 Several recent phylogenetic studies of Rubiaceae have dealt with enigmatic taxa whose systematic positions have been previously unknown or controversial.
Catarina Rydin +2 more
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Novelties in Borreria (Rubiaceae-Spermacoceae) from Brazil
Kew Bulletin, 2004sect. Pseudodiodia. Section Borreria is the largest, and is comprised of two subsections with series (Bacigalupo & Cabral 1996). According to Schumann (1888) and Andersson (1992), some species of Borreria are widespread in the New World and adventive elsewhere, but many are restricted to Brazil where the subgenus Borreria is represented by ...
Elsa L. Cabral, Nelida M. Bacigalupo
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Australian Spermacoce (Rubiaceae: Spermacoceae). I. Northern Territory
Australian Systematic Botany, 2005Northern Territory Spermacoce are revised, with 53 native species recognised, as well as four introduced species. Thirty-nine new species are described, and S. laevigata var. hispida Benth. is raised to species level. Lectotypes are chosen for all Australian Spermacoce names that had any ambiguity regarding types.
R. Harwood, S. Dessein
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Notes on Galianthe (Spermacoceae, Rubiaceae) in the Bolivian flora
Brittonia, 2005Four new species ofGalianthe (G. boliviana, G. chiquitosana, G. sudyungesis, andG. kempffiana) for Bolivia are described and illustrated.Galianthe kempffiana is also known from Brazil.Galianthe laxa andG. bisepala are reported for the first time for Bolivia.
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