Heracleum Kljuykov, Lyskov, Ukrainskaja, Samigullin & Terentieva, 2021, s.l.
Creators: name: Kljuykov, Eugene
name: Lyskov, Dmitry
name: Ukrainskaja, Uliana
name: Samigullin, Tahir
name: Terentieva, Elena
Publisher: name: Zenodo
Year: 2021
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Apiales
Apiaceae
Heracleum

description: Key to species of Nepalese Heracleum s.l.
1. Leaves twice pinnatisected or twice trilobate.....................................................................................................................................2
– Leaves pinnatisected or trilobate ........................................................................................................................................................3
2. Leaves twice pinnatisected, nearly glabrous, calyx teeth obsolete, umbels with 22–30 rays, marginal ribs narrower than body of mericarp............................................................................................................................................................... Heracleun piliferum
– Leaves twice pinnatisected or twice trilobate, pubescent, calyx teeth well developed, umbels with 6–16 rays, marginal ribs two times as wide as body of mericarp .................................................................................................................. Tetrataenium wallichii
3. Terminal lobes of leaves lanceolate................................................................................................................................. T. sublineare
– Terminal lobes of leaves obovate, elongate, or obovate-orbicular.....................................................................................................4
4. Plants weak and reclining, calyx teeth prominent, to 1 mm long..................................................................................... T. canescens
– Plants stout, calyx teeth merely evident to obsolete...........................................................................................................................5
5. Leaf blades elongate, secretory ducts between dorsal ribs solitary, between marginal and dorsal ribs binary........................ T. lallii
– Leaf blades obovate, secretory ducts between all ribs solitary ..........................................................................................................6
6. Fruit wings definitely broader than body. Leaflets sparsely hirsute beneath ................................................................... T. nepalense
– Fruit wings narrower than to equal in width to body. Leaflets densely gray-hirsutulous to with tomentose beneath .......................7
7. Leaves pinnate or ternate-pinnate, the 5-9 leaflets oblong to ovate ................................................................................. T. candicans
– Leaves pinnately parted or pinnatifid to simple pinnate, the 3 or 5 leaflets ovate-orbicular ....................................... T. obtusifolium
description: Published as part of Kljuykov, Eugene, Lyskov, Dmitry, Ukrainskaja, Uliana, Samigullin, Tahir & Terentieva, Elena, 2021, Heracleum piliferum (Apiaceae), a new species from central Nepal, pp. 166-178 in Phytotaxa 500 (3) on page 176, DOI: 10.11646/phytotaxa.500.3.2, http://zenodo.org/record/5424561