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| Lysionotus namchoomii Chowlu, C. H. Nguyen, K. Gogoi et Aver., in Chowlu, Gogoi, Truong, Averyanov, Iudova et Nguyen, 2023. |
Abstract
The new species of the genus Lysionotus (Gesneriaceae), named L. namchoomii, discovered in Pakke-Kessang District of Arunachal Pradesh, India, is described and illustrated here. It differs from morphologically similar L. ziroensis mainly in glabrous vegetative organs, denticulate-crenulate leaf blade, deltoid inflorescence bracts, free spatulate glabrous calyx lobes, and corolla glabrous inside. This species is confined to two different locations, with a small population comprising a total of 60–100 individuals. The conservation status of this new species is provisionally assessed here as Critically Endangered, CR: B1a, b(iiii, v) + 2a, b(i-iii,v) following the IUCN Red List Categories and Criteria.
Keywords: flora of India, new taxon, plant diversity, plant endemism, plant taxonomy, Southeast Asia
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| Lysionotus namchoomii: A – Flowering plant in natural habitat; B – Intact inflorescence; C – Flattened plant used for preparation of the type specimen; D – Rhizome; E – Inflorescence bracts; F – Calyx lobes, adaxial side; G – Intact flower, front view; H – Intact flower, side view; I – Opened corolla tube showing stamens; J – Pistil showing disc at the base. Photographed from the type materials by K. Chowlu, photo correction and plate design by K. Chowlu and L. Averyanov. |
Lysionotus namchoomii Chowlu, C. H. Nguyen, K. Gogoi et Aver., sp. nov.
Diagnosis. From the morphologically most similar Lysionotus ziroensis the new species differs mainly in glabrous stem, leaves, and peduncle; denticulate-crenulate leaf blade pale green below; glabrous deltoid bracts; straight, spatulate, glabrous calyx lobes; and corolla glabrous inside.
E t y m o l o g y. The species epithet honors the late Chau Phunkyoo Namchoom, a very popular figure as a social reformer representing the Khampti community in Arunachal Pradesh. He was a great nature lover and played a significant role in the upliftment of the Khampti community in Arunachal Pradesh, especially in facilitating good education and medical facilities for the people.
K. Chowlu, K. Gogoi, B. V. Truong, Leonid V. Averyanov, D. А. Iudova and C. H. Nguyen. 2023. Lysionotus namchoomii (Gesneriaceae), A New Species from Arunachal Pradesh, India [Lysionotus namchoomii (Gesneriaceae) – новый вид из штата Аруначал-Прадеш, Индия]. Turczaninowia. 26(3); 160-165. DOI: 10.14258/turczaninowia.26.3.14
Scientists of the Botanical Survey of India (BSI) have discovered a new species of epiphytic plant Lysionotus namchoomii from Pakke-Kessang district of Arunachal Pradesh.
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