Showing papers in "Blumea in 2023"
TL;DR: In this article , the authors used DArT-seq analysis to investigate genetic structure in Aglaia elaeagnoidea from India, Sri Lanka, Bangladesh, Thailand, Java and Bali.
Abstract:
Aglaia is the most widespread and species-rich genus in Meliaceae, comprising 124 species. Aglaia elaeagnoidea has presented a longstanding dilemma for taxonomists; it is highly morphologically and ecologically variable, and has a range extending across India, Southeast Asia, Australia and islands of the western Pacific Ocean. Previous work has examined molecular variation in the eastern part of the species’ range; however, molecular variation in the western half of its distribution remained uncharacterised, precluding taxonomic resolution of the complex. In this study, we used DArT-seq analysis to investigate genetic structure in A. elaeagnoidea from India, Sri Lanka, Bangladesh, Thailand, Java and Bali. We find a strong genetic disjunction between Sri Lanka and Bangladesh, suggesting that western A. elaeagnoidea comprises two taxa. On the basis of these results, in combination with morphology and previous molecular work on eastern A. elaeagnoidea, we resolve A. elaeagnoidea into three species, retaining A. elaeagnoidea for the eastern (type) species, and reinstating A. wallichii for a species in Bangladesh, Thailand, Java and Bali, and A. roxburghiana for a species occurring in India and Sri Lanka. We provide descriptions for each taxon and a key to the species, thereby resolving a previously difficult species group in a notoriously complex genus.
TL;DR: A new subspecies of the African species Spermacoce bequaertii is described and illustrated in this article , which 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.
Abstract:
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.
TL;DR: In this article , the genus Glossocarya (Lamiaceae: Ajugoideae) in Thailand is revised and taxonomic key to species, geographical map and conservation status of the five species in Thailand are provided.
Abstract:
The genus Glossocarya (Lamiaceae: Ajugoideae) in Thailand is revised. Descriptions, typifications, taxonomic key to species, geographical map and conservation status of the five species in Thailand are provided. Fruit morphology is also discussed and illustrated.
TL;DR: Two species of the Araceae family, Typhonium praelongum and Amorphophallus opalinus, are described as species new to science from South Vietnam as mentioned in this paper .
Abstract:
Two species of the Araceae family, Typhonium praelongum (having tuber of blunt cone shape, very long (about 30 cm) sterile appendix of the spadix, horizontal yellow-orange staminodes with tops turning upwards and a glossy entirely papillate upper surface of the simple leaf blade) and Amorphophallus opalinus (having narrow rhizome-like tuber with enlarged basal part, staminodes at the base of male zone of the spadix, narrow spathe, large, broadly-conical with rounded apex, opalescent stigmas and white, one-seeded berries), are described as species new to science from South Vietnam. Detailed morphological descriptions, colour plates of the species and their habitats, phenology, distribution map, provisional conservation status, taxonomic comments and overview of the genera Typhonium and Amorphophallus in the Flora of Vietnam are provided.
TL;DR: Schoenorchis kembangleutik Yudistira & Mustaqim described here as new to science is an orchid species currently considered endemic to West Java as mentioned in this paper .
Abstract:
Schoenorchis kembangleutik Yudistira & Mustaqim described here as new to science is an orchid species currently considered endemic to West Java. It is similar to S. pachyachris (J.J.Sm.) J.J.Sm. from Sumatra and Java but differs in having flowers with midlobe of labellum orbicular (vs oblong) with horizontal and rounded (vs pointing upwards and tapering to a point) apex, the labellum side lobes white, uncinate and retrorse at the apex (vs yellow, straight and erect at apex), and in having shorter spurs with straight base (2 vs 4 mm long, with geniculate base). A morphological description, notes on distribution, habitat and ecology, an illustration, photographs and a key to the five species of Schoenorchis of Java are provided.
TL;DR: The Nyctocalos tunjuharii (Bignoniaceae) was described and illustrated as a new species from Mt Kallang, Tenom, Sabah, Malaysian Borneo.
Abstract:
Nyctocalos tunjuharii (Bignoniaceae) is described and illustrated as a new species from Mt Kallang, Tenom, Sabah, Malaysian Borneo. It is distinguished from N. cuspidatus by its longer, linear calyx teeth, shorter corolla tube and included stamens that reach less than half the length of the upper dilated part of the corolla tube. This species is restricted to an area near Mt Kallang, Tenom, Sabah. A preliminary conservation status assessment is presented and a key to the Malesian taxa is provided.
TL;DR: In this paper , the Sumatran species of Croton (Euphorbiaceae) were derived from the nuclear ribosomal internal transcribed spacer (ITS) and a molecular analysis was performed to create a phylogeny that placed the Sumatra species in a phylogenetic context.
Abstract:
Croton (Euphorbiaceae) is a very large genus of over 1200 species of herbs, shrubs and trees occurring mainly in the (sub)tropics. The major diversity of Croton is within the Neotropics; and there are comparatively few species in South-East Asia. This contribution provides a revision of Croton from the Sumatran region in Indonesia, including descriptions and a determination key. In total sixteen species are recognized for Sumatra, including four species new to science, C. beccarii, C. scalaeus, C. simalurensis, and C. viridifolius. Two new synonyms and lectotypification of numerous names are also included. Besides a taxonomic treatment, a molecular analysis, using the nuclear ribosomal internal transcribed spacer (ITS), based on former data extended with Sumatran species, was performed to create a phylogeny that places the Sumatran species in a phylogenetic context. In total 13 new sequences were created, which were combined with 56 sequences obtained from GenBank. The results from the phylogenetic analysis, based on Bayesian inference, are in line with the phylogeny as published for mainly the Australian species of Croton by Van Ee et al. (2015).