Received: 21 July 2020
Accepted: 23 September 2020
First Online: 17 November 2020
Ethics approval and consent to participate
: The use of plant parts in the present study complies with international, national and/or institutional guidelines. Permission to collect leaf samples of the endangered <i>N. khasiana</i> from Jaraiñ, Jaiñtia Hills District, Meghalaya was granted by the Chief Wildlife Warden, Forest & Environment Department, State Government of Meghalaya, India vide Office Order No. 20 dated July 1, 2020.
: Not applicable.
: The authors declare that they have no competing interests.