Elephantopus scaber

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Taxonavigation

Ordo: Asterales
Familia: Asteraceae
Genus: Elephantopus

Name

Elephantopus scaber L., Sp. Pl.: 814. 1753. – Wikispecies link – IPNI link – Pensoft Profile

Type

Indiis, Ana-schovadi in Rheede, Hort. Malab. 10: 13, t.7. 1690. (Lectotype designated by Jeffrey in Jarvis & al. (ed.), Regnum Veg. 127: 44. 1993. Figs 8B–C.

Description

Perennial herbs. Stems lacking except for the flowering scape, erect, terete, inconspicuously ribbed, sericeous. Leaves in basal rosette at base, obovate or obovate-lanceolate, margin crenate or serrate, apex obtuse or acute, base attenuate, subcoriaceous. Capitulescences terminal, scapose. Foliose bracts 3, deltoid. Capitula tubular. Involucres green or with purple apex. Phyllaries 8, in 2 series, decussate, margin entire or piliferous. Florets 4; corollas salverform, white or purple, zygomorphic. Anthers ca. 2 mm long, apical appendage acute, base acute or rounded. Styles purple. Achenes clavate, 2–3 mm long, pubescent with dense twin hairs, lacking glands. Pappus of 5 bristles with dilated bases in one series, persistent.
Two varieties are recognized in Thailand.

Key to the varieties

Key to the varieties — S. Bunwong, P. Chantaranothai , S. Keeley

1		Leaves and inflorescences densely pilose-tomentose    var. penicillatus
–		Leaves and inflorescences sparsely pilose    var. scaber

Taxon Treatment

• Bunwong, S; Chantaranothai, P; Keeley, S; 2014: Revisions and key to the Vernonieae (Compositae) of Thailand PhytoKeys, 37: 25-101. doi

Images

Figure 8. Morphology of Vernonieae in Thailand 4. A Elephantopus mollis B–C Elephantopus scaber D Elephantopus scaber var. penicillatus E–F Pseudelephantopus spicatus.