Sunday, March 5, 2023

[Botany • 2019] Henckelia collegii-sancti-thomasii (Gesneriaceae) • A New Species from Northeastern India


 Henckelia collegii-sancti-thomasii A.Joe, D.Borah, M.Taram & Sandhya,  

in Borah, Taram, Joe & Neelamkavil, 2019.

Henckelia collegii-sancti-thomasii, a new species of Henckelia is described here from Nirijuli, Papum Pare district of Arunachal Pradesh, northeastern India. Detailed description, its habitat and ecology along with color photographs are provided.

Keywords: Arunachal Pradesh, Gesneriaceae, India, Henckelia, new species


 Henckelia collegii-sancti-thomasii
  A. Habitat. B. Habit.

 Henckelia collegii-sancti-thomasii:
A. Flowering twig. B. Flower-front view. C. Bract. D. single flower -side view. E. Calyx. F. dissected corolla with stamens and staminodes. G. calyx with style and stigma. H. Pistil.

Henckelia collegii-sancti-thomasii A.Joe, D.Borah, M.Taram & Sandhya sp. nov. 

Henckelia collegii-sancti-thomasii is morphologically similar to H. speciosa but can be easily distinguished by a combination of characters such as plants caulescent with 8–20 cm long stem (vs stems absent or sub-acaulis), laminae base cuneate (vs cordate), laminae color green (vs purplish, mainly along the veins), peduncle white pubescent (vs rust-brown pubescent), bracts ovate (vs lanceolate), pedicel glabrous (vs tomentose), calyx divided below the middle or near to middle (vs above the middle), filaments puberulent (vs glabrous), anthers glabrous (vs puberulent), ovary glabrous (vs puberulent) (Table 1.).

Etymology:— This species is named after the prestigious St. Thomas’ College (Autonomous), Thrissur, Kerala,India, which is one of the premier and oldest educational institutions in Kerala.  

Dipankar Borah, Momang Taram, Alfred Joe and Sandhya Vincent Neelamkavil. 2019. Henckelia collegii-sancti-thomasii: A New Species of Henckelia (Gesneriaceae) from Northeastern India. Phytotaxa. 415(4); 247–251. DOI: 10.11646/phytotaxa.415.4.10