Polygonatum Miller 1754

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
Published as part of Singh, Ankit, Singh, Harsh & Nautiyal, Mohan Chandra, 2022, Polygonatum tungnathensis (Asparagaceae), a new species from Uttarakhand, Western Himalaya, India, pp. 163-175 in Phytotaxa 554 (2) on page 172, DOI: 10.11646/phytotaxa.554.2.5, http://zenodo.org/record/6820940