0000000000416693

AUTHOR

Ongkarn Vanijajiva

showing 2 related works from this author

A revision of Gynura (Asteraceae: Senecioneae)

2011

A revision of the paleotropical genus Gynura Cass. is presented. Forty-four species are recognized, of which three are described as new. These are G. daviesiae Vanijajiva & Kadereit, G. villosa Vanijajiva & Kadereit, and G. siamensis Vanijajiva & Kadereit. Gynura dissecta (F. G. Davies) Vanijajiva & Kadereit, G. annua (F. G. Davies) Vanijajiva & Kadereit, and G. aurantiaca (Bl.) DC. subsp. parviflora (F. G. Davies) Vanijajiva & Kadereit are new combinations. An identification key, descriptions, and distribution maps are provided.

biologyBotanyIdentification keyZoologyTaxonomy (biology)Plant ScienceSenecioneaeGynuraAsteraceaebiology.organism_classificationEcology Evolution Behavior and SystematicsJournal of Systematics and Evolution
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Morphological and molecular evidence for interspecific hybridisation in the introduced African genusCrassocephalum(Asteraceae: Senecioneae) in Asia

2009

Abstract The genus Crassocephalum in Asia, introduced there from Africa, was examined by extensive field work, herbarium studies, analyses of pollen and seed fertility, chromosome counts and ITS and trnL‐F sequencing. We found that Crassocephalum in Asia comprises two species and their interspecific hybrid. The two species are C. crepidioides (Benth.) S. Moore and C. rubens (Juss. ex Jacq.) S. Moore, of which the latter is a new record for Asia (north Thailand). The hybrid between these two species in north Thailand originated from a cross between C. crepidioides (2n = 40) as female and C. rubens (2n = 40) as male parent.

biologyIntroduced speciesPlant ScienceSenecioneaeInterspecific competitionAsteraceaebiology.organism_classificationmedicine.disease_causeHerbariumGenusPollenBotanymedicineEcology Evolution Behavior and SystematicsHybridSystematics and Biodiversity
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