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Sunday, September 22nd, 2024
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| 1:43a | [Botany • 2024] Globba corniculata, G. paschimbengalensis, G. polymorpha, etc. (Zingiberaceae) • Six New Species from the Eastern Himalayas and Northeast India
Abstract We describe six new species in the genus Globba L.: Globba corniculata sp. nov., Globba paschimbengalensis sp. nov., Globba polymorpha sp. nov., Globba tyrnaensis sp. nov., Globba janakiae sp. nov., and Globba yadaviana sp. nov. collected from the Indian part of the Eastern Himalayas (West Bengal) and Northeast India. We provide a detailed morphological description of all six species along with photographic plates, distribution maps, and tentative conservation assessments. We also provide a dichotomous identification key for all the Indian Globba species and discuss the newly described species in relation to those that are morphologically similar to them. Finally, we highlight the taxonomic collection challenges in the ecologically sensitive Eastern Himalayas and Northeast regions of India. Key words: Dancing girls, Ginger, Meghalaya, Mizoram, taxonomy, West Bengal  Globba corniculata Y.Ritu & V.Gowda, sp. nov. Etymology: The species epithet ‘corniculata’ refers to the presence of horn-shaped structure at the base of labellum. Globba paschimbengalensis Y.Ritu & V.Gowda, sp. nov. Etymology: The species epithet refers to the Indian state of West Bengal, where this species was found.
Globba polymorpha Y.Ritu & V.Gowda, sp. nov. Etymology: The species epithet refers to the floral color variation due to bracteole color variations among individuals within the same population, which can be seen in Fig. 7A (top left and bottom left). Globba tyrnaensis Y.Ritu & V.Gowda, sp. nov. Etymology: The species epithet refers to the type locality for this species, which is at the Tyrna village, Cherrapunji, Meghalaya.  Globba janakiae Y.Ritu & V.Gowda, sp. nov. Etymology: The species is named in honor of Dr. E. K. Janaki Ammal. She was a pioneering Indian woman botanist who challenged the norms of caste, gender and race. She was critical about deforestation carried out to make way for development projects and advocated preservation of native plants. Globba yadaviana Y.Ritu & V.Gowda, sp. nov. Etymology: This species epithet is in the memory of the late Mr. Rajesh Yadav, who was the father of the first author and was instrumental in the author’s progress in science and education. Ritu Yadav and Vinita Gowda. 2024. Six New Species of Globba L. (Zingiberales, Zingiberaceae) from the Eastern Himalayas and Northeast India. PhytoKeys. 246: 197-228. DOI: doi.org/10.3897/phytokeys.246.118751 | ||||
| 8:30a | [Botany • 2024] Srilankanthus gen. n. • The Cardamom Conundrum Resolved: Recircumscription and Placement of Elettaria (Zingiberaceae) in the only pantropically distributed ginger lineage
Abstract The overarching aim of the present study is to sort out the taxonomy of a group of gingers that include the useful and worldwide economically important green cardamom, Elettaria cardamomum, and its wild relatives, to highlight potentially overlooked genetic resources. These species occur naturally in India and Sri Lanka, and our study facilitates more appropriate management priorities for the remaining forest fragments in which they occur. We used NGS Hyb-Seq methods and sampled four species of the Alpinia I (Fax) clade, six representatives of Aframomum and Renealmia as well as two other basally flowering Sri Lankan species. This is the only pantropically distributed lineage within the entire family, and our result shows that the Alpinia I clade in fact is simply the genus Elettaria (confined to India and Sri Lanka), which is sister to the genera Aframomum (Africa) and Renealmia (Africa and Neotropics). The taxonomic implications are: (1) a recircumscription of Elettaria comprising seven species (E. cardamomum, E. ensal, E. floribunda, E. involucrata, E. rufescens as well as two new species, E. facifera and E. tulipifera described here); (2) the Sri Lankan endemic genus Cyphostigma should be retained; (3) the new monotypic genus, Srilankanthus endemic in Sri Lanka, is described with S. nemoralis, formerly Amomum nemorale, as type. A key is provided to the seven species of Elettaria and lectotypifications are made for five species (Cyphostigma pulchellum, Elettaria floribunda, E. involucrata, E. nemoralis, E. rufescens). Keywords: Alpinioideae, Cyphostigma, Sri Lanka, Srilankanthus, Thwaites, Zingiberaceae  • Srilankanthus Marasinghe & A.D.Poulsen, gen. nov. Srilankanthus nemoralis (Thwaites) Marasinghe & A.D. Poulsen comb. nov. (≡ Elettaria nemoralis Thwaites). Distribution.– Only one species, endemic in Sri Lanka. Etymology.– The generic name means “flower of Sri Lanka”. Ecology.– Primary lowland forest.  Axel Dalberg Poulsen, Tomáš Fér, Lakmini Darshika Kumarage Marasinghe, Mamiyil Sabu, Mark Hughes, Eugenio Valderrama and Jana Leong-Škorničková. 2024. The Cardamom Conundrum Resolved: Recircumscription and Placement of Elettaria in the only pantropically distributed ginger lineage. TAXON. DOI: doi.org/10.1002/tax.13242 facebook.com/companyofenvironment76/pos |
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