Polygonatum tungnathensis (Asparagaceae), a new species from Uttarakhand, Western Himalaya, India Author Singh, Ankit 0000-0003-3769-685X High Altitude Plant Physiology Research Centre (HAPPRC), H. N. B. Garhwal University, Post Box 14, Srinagar, Garhwal, 246174, Uttarakhand, INDIA & ankitsinghrawat 333 @ gmail. com; https: // orcid. org / 0000 - 0003 - 3769 - 685 X ankitsinghrawat333@gmail.com Author Singh, Harsh 0000-0002-9416-895X Department of Botany, Centre for Advanced Studies in Botany, North-Eastern Hill University, Shilong- 793022, Meghalaya, INDIA & harshchamlegi @ gmail. com; https: // orcid. org / 0000 - 0002 - 9416 - 895 X harshchamlegi@gmail.com Author Nautiyal, Mohan Chandra 0000-0002-8369-2350 High Altitude Plant Physiology Research Centre (HAPPRC), H. N. B. Garhwal University, Post Box 14, Srinagar, Garhwal, 246174, Uttarakhand, INDIA & mcnautiyal @ gmail. com; https: // orcid. org / 0000 - 0002 - 8369 - 2350 mcnautiyal@gmail.com text Phytotaxa 2022 2022-07-12 554 2 163 175 http://dx.doi.org/10.11646/phytotaxa.554.2.5 journal article 94523 10.11646/phytotaxa.554.2.5 16b39873-e71a-42ac-ba2e-4395b97ca580 1179-3163 6820940 Key to the genus Polygonatum from Western Himalaya 1a. Leaves opposite ......................................................................................................................................................... P. graminifolium 1b. Leaves alternate or whorled................................................................................................................................................................2 2a. Stem less than 10 cm ; flowers erect ..................................................................................................................................... P. hookeri 2b. Stem more than 20 cm , flowers pendulous ........................................................................................................................................3 3a. Leaves alternate............................................................................................................................................................. P. multiflorum 3b. Leaves whorled...................................................................................................................................................................................4 4a. Leaf apex curved or coiled, tendril-like ........................................................................................................................ P.cirrhifolium 4b. Leaf apex acute, straight, not curved or coiled...................................................................................................................................5 5a. Leaves broad lanceolate; pedicel with bractlets ......................................................................................................... P. tungnathensis 5b. Leaves narrowly lanceolate; pedicel without bractlets................................................................................................ P. verticillatum