Two new species of Henckelia (Gesneriaceae) from the Eastern Himalayan state Arunachal Pradesh, India

Abstract

The genus Henckelia Spreng. (Gesneriaceae), in the sense of Weber et al. (2011), presently includes about 73 species, distributed from China and N India to S India and Sri Lanka and from W India to Vietnam. In India, it is represented by 37 species, of which 21 species occur in western, eastern Himalaya and northeast India, and 16 species in the Western Ghats.During the authors' work on the floristic diversity of the Eastern Himalayan state Arunachal Pradesh, India, specimens of two Henckelia species were collected in the Lower Subansiri and Kurung Kumey districts (Figure 1), that proved new on closer inspection. They are formally described here as new species. | MATERIAL AND METHODSSpecimens of the two new species of Henckelia were collected during plant collection trips to Arunachal Pradesh from 2017 to 2019. Type specimens were deposited at ARUN and ASSAM. For comparison, material was studied from ARUN, ASSAM, BM, CAL, E, G, K, L, MH, P and PE. The number of mature individuals found in the type locality was recorded for both species for assessment of the conservation status.

Henckelia arupii (Gesneriaceae): A new species from Arunachal Pradesh, India

“…is a member of the family Gesneriaceae. It presently includes about 75 species (GRC, 2022; Nampy et al, 2021; Shi & Yang, 2021; Shi et al, 2021; Taram et al, 2021). The genus is distributed in India, Bangladesh, Nepal, Bhutan, China, Myanmar, Sri Lanka, Thailand, Laos and Vietnam (Kanthraj et al, 2020; Taram et al, 2021).…”

Henckelia longipedicellata (Gesneriaceae): New addition for the flora of India from Mishmi Hills of Arunachal Pradesh

“…The genus Henckelia Spreng., currently includes 75 species (Taram et al, 2021; Weber et al, 2011) distributed through Himalayas, Northeast and South India, Sri Lanka, Thailand, Laos and Vietnam (Middleton et al, 2013; Möller et al, 2017). India is represented by 39 species of which 22 occurs in Northeast India (Taram et al, 2021, revised).…”

“…The genus Henckelia Spreng., currently includes 75 species (Taram et al, 2021; Weber et al, 2011) distributed through Himalayas, Northeast and South India, Sri Lanka, Thailand, Laos and Vietnam (Middleton et al, 2013; Möller et al, 2017). India is represented by 39 species of which 22 occurs in Northeast India (Taram et al, 2021, revised). Several species are described recently from the state of Arunachal Pradesh: H. pathakii Krishna & Lakshminarasimhan (Krishna & Lakshminarasimhan, 2018), H. umbellata Kanthraj & K. Narayanan (Kanthraj et al, 2020), H. siangensis Taram, D.Borah & Tag (Taram et al, 2020), H. dasii Taram, D.Borah, R. Kr.…”

“…Singh & Tag, and H. lallanii Taram, D.Borah, Tag & R. Kr. Singh (Taram et al, 2021). While working on the floristic diversity of Eastern Himalayan state Arunachal Pradesh, India (Borah et al 2019, 2020a, 2020b, 2020c, 2020d, 2020e, 2020f; Taram et al 2020a, 2020b, 2020c, 2021), the authors encountered an interesting species of Henckelia .…”

“…Singh (Taram et al, 2021). While working on the floristic diversity of Eastern Himalayan state Arunachal Pradesh, India (Borah et al 2019, 2020a, 2020b, 2020c, 2020d, 2020e, 2020f; Taram et al 2020a, 2020b, 2020c, 2021), the authors encountered an interesting species of Henckelia . Detailed study of Henckelia species of India and adjoining countries, including protologues, type specimens, other herbarium specimens and relevant taxonomic literature (Clarke, 1874, 1884; Chatterjee, 1948; Don, 1825; Kanthraj et al, 2020; Krishna & Lakshminarasimhan, 2018; Sinha & Datta, 2016; Sirimongkol et al, 2020; Taram et al, 2020b, 2021; Wang et al, 1998; Wood, 1974; Yang et al, 2019) revealed it to be a Henckelia longipedicellata (B.L.Burtt) D.J.Middleton & Mich.Möller (Basionym: Chirita longipedicellata B.L.Burtt).…”