Piper khasianum C. DC., Prodr. 16(1): 349 1869. (syn: Piper curtistipes C. DC.; Piper mannii C. DC.);
Central & E. Himalaya to Peninsula Malaysia: Assam, Bangladesh, East Himalaya, Malaya, Myanmar, Nepal, Vietnam as per POWO;
Similar to P.suipigua but leaves membranous, lanceolate or narrowly ovate, 6-10 x 2-4cm, long-acuminate, base cuneate, 3-veined at base, with 2 further lateral veins arising 1-1.5cm above base; petiloes 4-8mm; axillary buds more numerous, 3-4mm; spikes shorter, 2-3cm, on peduncles 4-8mm; drupes globose, smaller, 3-4mm diameter, borne on short, stout stalk 0.5-1mm.
(Attributions- A.C.J Grierson & D.G Long. Flora of Bhutan. Published by RBGE. 1984 as per Bhutan Biodiversity Portal
SK 2892 23 March 2021: 5 very high resolution images.
Looks different from images at Piper longum
But fruiting bunch looks completely different according to Piper mullesua Buch.-Ham. ex D. Don and my earlier posts on Piper mullesua Buch.-Ham. ex D. Don !
References: POWO Catalogue of Life The Plant List Ver.1.1 WCSP IPNI GBIF (High resolution specimens) High resolution specimen High resolution specimen 2 India Biodiversity Portal IBIS Flora (Flora of British India) Bhutan Biodiversity Portal