Hymenolepis Cassini 1817
Creators: name: Magoswana, Simon L.
name: Schutte-Vlok, Anne Lise
name: Vlok, Jan
name: Magee, Anthony R.
Publisher: name: Zenodo
Year: 2015
Subjects: Biodiversity
Taxonomy
Plantae
Tracheophyta
Magnoliopsida
Asterales
Asteraceae
Hymenolepis

description: Updated key to the species (adapted from Magoswana & Magee 2014)
1. Involucral bracts glabrous ..................................................................................................................................................................2
1. Involucral bracts sericeous .................................................................................................................................................................5
2. Synflorescence a congested corymb with peduncles obscured; leaves ≤ 20 mm long ...................................................... H. dentata
2. Synflorescence an open, doubly compound corymb with visible peduncles; leaves ≥ 30 mm long .................................................3
3. Leaves linear and undivided; restricted to the Eastern Cape .............................................................................................. H. indivisa
3. Leaves variously 2- or 3-sect to pinnatisect, sometimes entire towards synflorescence; restricted to Northern and Western Cape ... ............................................................................................................................................................................................................4
4. Leaves spreading, pinnatisect with 5 to 9 lobes; branches and young leaves sparsely covered in short white hairs .......................... .................................................................................................................................................................................... H. crithmifolia
4. Leaves erect or suberect, mostly 2- or 3-sect, sometimes entire towards synflorescence; all parts glabrous...................... H. glabra
5. Leaves pinnatisect ..............................................................................................................................................................................6
5. Leaves entire to apically dentate ........................................................................................................................................................7
6. Leaves densely felted, greyish-white to brownish gold,> 30 mm long, strongly pinnatisect, mostly 7- to 14-lobed......................... ........................................................................................................................................................................................... H. speciosa
6. Leaves glabrous, green, <20 mm long, weakly pinnatisect, usually 5-lobed....................................................................... H. incisa
7. Leaves obovate-spatulate, ≥ 3 mm wide, apically 3- to 9-dentate; mature leaves densely hairy abaxially and greyish-white ........... ........................................................................................................................................................................................... H. cynopus
7. Leaves linear to elliptic, ≤ 3 mm wide, entire or some leaves apically 3- toothed; mature leaves glabrous to glabrescent and green at maturity...........................................................................................................................................................................................8
8. Pappus absent; cypsela ribs tuberculate; synflorescence a compound corymb, 20–40 mm diam.; shrublet to 0.6 m, branched from near base ................................................................................................................................................................................. H. calva
8. Pappus present; cypsela ribs smooth; synflorescence a simple corymb, 4–20 mm diam.; lanky single stemmed shrub to 2 m, branched in upper half ................................................................................................................................................... H. gnidioides
description: Published as part of Magoswana, Simon L., Schutte-Vlok, Anne Lise, Vlok, Jan & Magee, Anthony R., 2015, Hymenolepis glabra (Anthemideae, Asteraceae), a new species from the Little Karoo (South Africa), pp. 189-192 in Phytotaxa 230 (2) on pages 189-190, DOI: 10.11646/phytotaxa.230.2.6, http://zenodo.org/record/13630957