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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
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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 ...
YING ZHANG   +2 more
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Dentella cylindrica sp. nov. (Rubiaceae: Tribe Spermacoceae) from Andaman and Nicobar Islands, India

Indian Journal of Forestry, 2020
Dentella cylindrica M.C. Naik and L.J. Singh from Andaman and Nicobar Islands, India is described and illustrated as a new species. An illustration, images, and a key to the species of Dentella in India is provided.
Mudavath Naik, Lal Singh
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Insights into the morphology and evolution of orbicules in the Spermacoce clade (Spermacoceae-Rubiaceae) and implications for systematics

Botanical journal of the Linnean Society, 2023
The orbicules are tiny structures of sporopollenin that occur on the interior wall of anthers in several groups of plants, and they are associated with pollen grains and tapetal cells.
Mariela Nuñez-Florentin   +3 more
semanticscholar   +1 more source

Staelia schumannii (Rubiaceae, Spermacoceae): An Old New Species from Bahia, Brazil, Overlooked for More than a Century

Systematic Botany, 2021
The new species Staelia schumannii was discovered through the analysis of historical collections associated with Staelia thymbroides (Psyllocarpus thymbroides). The rediscovery of the missing type of S.
João A. M. do Carmo   +3 more
semanticscholar   +2 more sources

Australian Spermacoce (Rubiaceae: Spermacoceae). I. Northern Territory

Australian Systematic Botany, 2005
Northern 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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Lectotypification of Psyllocarpus schwackei (Spermacoceae, Rubiaceae)

Phytotaxa, 2017
Psyllocarpus 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 ...
JOÃO A.M. CARMO   +3 more
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Galianthe holmneielsenii (Spermacoceae-Rubiaceae): A New Rheophilous Species from the Pacific Coast of Colombia and Ecuador

Systematic Botany, 2021
A new species of Galianthe from the west coast of Colombia and Ecuador that has fruits with indehiscent mericarps is described and illustrated. Galianthe holmneielsenii is most similar to Borreria ocymifolia and G.
J. E. Florentín   +2 more
semanticscholar   +1 more source

Novelties in Borreria (Rubiaceae-Spermacoceae) from Brazil

Kew Bulletin, 2004
sect. 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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Staelia fimbriata, a new species of Rubiaceae (Spermacoceae) from the Espinhaço Range of Minas Gerais, southeastern Brazil

Phytotaxa
Staelia (Rubiaceae) is a genus endemic to South America identified by the unique capsule that splits into three parts. In Brazil, the genus thrives in diverse habitats in the Caatinga, Cerrado, and Campos Rupestres.
D. A. Zavatin   +4 more
semanticscholar   +1 more source

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