Results 131 to 140 of about 466 (149)

Molecular‐based phylogenetic placement and revision of Micrasepalum (Spermacoceae‐Rubiaceae)

TAXON, 2021
AbstractMicrasepalum is a taxonomically and phylogenetically poorly understood genus of Rubiaceae endemic to the global biodiversity hotspot of the Caribbean islands. It has traditionally been associated with species in the Spermacoce clade, but never properly evaluated in a phylogenetic context. Also, little information about seed and fruit morphology
Mariela Nuñez Florentin, Roberto M. Salas, Steven B. Janssens, Steven Dessein, Domingos Cardoso   +4 more
openaire   +2 more sources

Borreria kelleri (Spermacoceae, Rubiaceae), a new species from Argentina and Paraguay

Nordic Journal of Botany, 2022
Borreria kelleri (Spermacoceae, Rubiaceae), is described as a new species from northeastern Argentina and Paraguay. The new species is morphologically similar to B. quadrifaria due to the presence of densely and notable hairs in the angles of the stems and pantoporate ...
Laila M. Miguel, Sandra V. Sobrado, Javier E. Florentín, Elsa L. Cabral, Roberto M. Salas   +4 more
openaire   +2 more sources

Novelties in Spermacoceae (Rubiaceae) from Bolivia and Paraguay

Brittonia, 2005
One new Bolivian species (Borreria pazensis) and three new varieties (Borreria densiflora var.minima, Richardia, scabra var.chacoensis andStaelia virgata var.killeenii) are described and illustrated. The genusDiodella, with three species (D. apiculata comb. nov., D. radula comb. nov., andD.
Elsa L. Cabral, Nélida M. Bacigalupo
exaly   +2 more sources

Studies in the tribe Spermacoceae (Rubiaceae-Rubioideae): the circumscriptions of Amphiasma and Pentanopsis and the affinities of Phylohydrax

Plant Systematics and Evolution, 2004
Phylogenetic analysis of rbcL cpDNA sequences for 34 members of the tribe Spermacoceae s. lat. indicates that the African genera Amphiasma, Conostomium, Manostachya, Pentanopsis and Phylohydrax form a strongly supported clade, characterised by basal placentation and heterostyly.
Birgitta Bremer
exaly   +2 more sources

Involucrella lithophila (Rubiaceae: Spermacoceae): A new species from Guangxi, China

Phytotaxa, 2020
Involucrella lithophila from the limestone area of Guangxi, China, is described and illustrated here. It is most similar to Hedyotis kurzii and Involucrella chereevensis in having tetragonal stems, slender pedicels and loculicidally dehiscent capsules, but it differs from the former by its 3–5 (–7)-lobed stipules, heterostylous and white flowers and ...
MING-DENG YUAN, RUI-JIANG WANG
openaire   +1 more source

Bouvardia viticella (Rubiaceae, Spermacoceae), a New Species from the Mixed Temperate Forest of Mexico

Novon, 2006
(Uploaded by Plazi from the Biodiversity Heritage Library) No abstract provided.
Lorea-Hernández, F G, Lozada-Pérez, Lucio   +1 more
exaly   +3 more sources

Dimetia brevipetiolata (Spermacoceae: Rubiaceae): A new species from Guangxi, China

Phytotaxa, 2020
A new species, Dimetia brevipetiolata R. J. Wang, from Guangxi Zhuang Autonomous Region, China, is described and photographed. Morphologically, it is similar to D. scandens and D. ampliflora with respect to their terete stem, lanceolate and thick papery leaves and compound-cymose inflorescences, but differs in prostrate habit, subsessile leaves ...
Zhang, Ying, Jiang, Guo-Bin, Wang, Rui-Jiang   +2 more
openaire   +1 more source

RUBIACEAE, SPERMACOCEAE ALLIANCE, SUBFAMILY RUBIOIDEAE

2022
P. De Block, S. G. Razafimandimbison
openaire   +1 more source

Mitracarpus longicalyx (Rubiaceae, Spermacoceae), a new species from northeastern Brazil

Brittonia, 2001
Mitracarpus longicalyx is here described and illustrated from sandy areas of the caatingas of northeastern Brazil. The new species is similar toM. hirtus andM. megapotamicus.
Elnatan Bezerra de Souza, Margareth Ferreira De Sales   +1 more
openaire   +1 more source

Plastome phylogenomics of the tribe Spermacoceae (Rubiaceae): taxonomic implications and a key to the genera

ABSTRACT The tribe Spermacoceae (Rubiaceae) comprises a morphologically diverse assemblage of approximately 1,400 species distributed across the Neotropics, Africa, Asia, Australia, and Pacific region. It remains one of the most taxonomically intractable groups in the family, with generic limits repeatedly redefined ...
Nuñez-Florentin Mariela, Kieran Claypool, Nusrat Huda, Katherine Green, Greg Monzel, Peter W. Schafran, Suman Neupane   +6 more
openaire   +1 more source