e-Key <span id="jodit_selection_marker_1710238438725_8829696811458421" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>v3 - Hetero<span id="jodit_selection_marker_1710238438725_12130283754659943" data-jodit_selection_marker="end" style="line-height: 0; display: none;"></span>lepis
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Asteraceae - Arctoteae - Heterolepis Cass.

Description:

  • Shrublets; young branches cobwebby
  • Leaves alternate, linear to linear-oblong, margins entire or remotely dentate, usually revolute, mucronate, usually tomentose on lower surface
  • Capitula radiate, relatively large, solitary, terminal, on long or short, glandular peduncles
  • Involucre broadly campanulate; bracts in 1-3 rows; outermost sometimes herbaceous, papillose; inner oblong to linear, ciliate towards apex, with membranous margins
  • Receptacle epaleate, honeycombed (areolate)
  • Ray florets female, fertile; corolla yellow; tube shorter than minutely 3-toothed, oblong-linear lamina, generally with staminodes, with filiform lobe ventrally in sinus of tube
  • Disc florets bisexual, fertile; corolla yellow; tube widening above, with 5 linear lobes
  • Anthers calcarate and caudate; with oblong, apical appendage; endothecial tissue polarised
  • Style slender with rather short style branches, apical portion not or only slightly thickened and with short hairs mainly at border to shaft
  • Cypselas oblong-obovoid, densely sericeous
  • Pappus of stout, subulate, bristle-like marginally barbellate scales in 2 rows
  • x = 10

Nomenclature:

  • Heterolepis Cass.
    • Cassini: 26 (1820)
    • Harvey: 469 (1865)
    • Druce: 628 (1917)
    • Bremer: 257 (1994)
  • Minurothamnus DC.
    • Candolle: 286 (1838)
    • Harvey: 124 (1865)
    • Merxmüller: 39 (1950)

Distribution & Notes:

  • Southern Africa: Species 3, endemic, Western Cape

References:

  • BREMER, K. 1994. Asteraceae, cladistics & classification. Timber Press, Portland, Oregon
  • CANDOLLE, A.P. DE. 1838. Compositae. Prodromus 7,1. Treuttel & Würtz, Paris
  • CASSINI, A.H.G. DE. 1820. Bulletin de la Société Philomatique de Paris February 1820
  • DRUCE, G.C. 1917. Nomenclatorial notes: chiefly African and Australian. Report for 1916. Report of the Botanical Exchange Club of the British Isles 1916
  • HARVEY, W.H. 1865. Compositae. Flora capensis 3
  • MERXMÜLLER, H. 1950. Compositen-Studien 1. Mitteilungen der Botanischen Staatssammlung, München 1