Results 31 to 40 of about 466 (149)
A new subspecies of Spermacoce bequaertii (Rubiaceae: Spermacoceae)
Blumea - Biodiversity, Evolution and Biogeography of Plants, 2023 A new subspecies of the African species Spermacoce bequaertii is described and illustrated. This new subspecies (subsp. brevituba is restricted to the Kasai district in the Democratic Republic of Congo, and differs from the typical subspecies in having smaller mature flowers with a glabrous corolla tube inside.
Kok, R.P.J. de, Dessein, S.
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The evolutionary responses of life‐history strategies to climatic variability in flowering plants
New Phytologist, Volume 240, Issue 4, Page 1587-1600, November 2023., 2023 Summary The evolution of annual or perennial strategies in flowering plants likely depends on a broad array of temperature and precipitation variables. Previous documented climate life‐history correlations in explicit phylogenetic frameworks have been limited to certain clades and geographic regions.
James D. Boyko +3 more
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New chromosome counts on Rubiaceae from Africa and the Western Indian Ocean islands
Nordic Journal of Botany, Volume 2023, Issue 5, May 2023., 2023 Cytological studies can provide important insights into circumscription and relationships within plant groups. Nevertheless, there is a considerable lack of cytological information, especially for large and complex groups such as the coffee family (Rubiaceae) and for plants from Africa and the Western Indian Ocean islands. In the present study, 110 new
Michael Kiehn, Andreas Berger
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Journal of Systematics and Evolution, Volume 60, Issue 5, Page 998-1011, September 2022., 2022 Distyly in Hedyotis bodinieri (top left, pin morph; lower left, thrum morph) and growth of Hedyotis vachellii pollen (thrum morph) on the stigma of Hedyotis acutangula (pin morph). Abstract Breakdown of self‐incompatibility increases opportunities for both self‐fertilization and interspecific hybridization, although the latter is dependent on the ...
Mahadura A. Dias, Richard M. K. Saunders
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Journal of Systematics and Evolution, Volume 59, Issue 5, Page 915-934, September 2021., 2021 Wide‐range geographically discontinuous distributions have long intrigued scientists. We explore the role of ecology, geology, and dispersal in the formation of these large‐scale disjunctions, using the angiosperm tribe Putorieae (Rubiaceae) as a case study. From DNA sequences of nuclear ITS and six plastid markers, we inferred a phylogeny, obtained an
Mario Rincón‐Barrado +7 more
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American Journal of Botany, Volume 108, Issue 7, Page 1143-1165, July 2021., 2021 Premise Comprising five families that vastly differ in species richness—ranging from Gelsemiaceae with 13 species to the Rubiaceae with 13,775 species—members of the Gentianales are often among the most species‐rich and abundant plants in tropical forests. Despite considerable phylogenetic work within particular families and genera, several alternative
Alexandre Antonelli +15 more
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New combinations in the genus Diodella (Rubiaceae, Spermacoceae)
Darwiniana, 2006 Four species of Diodia are transferred to Diodella, and the new combinations are: Diodella gardneri, Diodella mello-barretoi, Diodella sarmentosa and Diodella scandens.
Bacigalupo, N.M., Cabral, E.L.
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Studies in Otiophora Zucc. (Rubiaceae): 4. The taxonomic position of the genus
Bothalia: African Biodiversity & Conservation, 1983 An evaluation of the characters of Otiophora provides conclusive evidence that the genus should be excluded from the Anthospermeae, the tribe in which it has traditionally been placed.
Ch. Puff
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Multi-loci phylogeny and morphological evidence support the recognition of Januaria (Spermacoceae, Rubiaceae), a new monospecific genus endemic to the North of Minas Gerais (Brazil) [PDF]
Anais da Academia Brasileira de Ciências, 2023 Januaria is described as a new monospecific genus of Rubiaceae, based on material from Januária, northern Minas Gerais, Brazil. The new taxon is endemic to Brazil, occurring in a vegetation type that is known locally as “carrasco”, in the southern limit ...
MARIELA NUÑEZ-FLORENTIN +4 more
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Acta Botânica Brasílica, 2011 El presente trabajo trata del estudio taxonómico del género Borreria (Rubiaceae) para el estado de Bahia, siendo registradas 29 especies. La mayor parte de estas especies habitan en los biomas del cerrado y la mata atlántica.
Elsa Leonor Cabral +2 more
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