e-Key <span id="jodit_selection_marker_1706792886374_9718362670737546" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>v3 - Atricha<span id="jodit_selection_marker_1706792886374_6199929058652884" data-jodit_selection_marker="end" style="line-height: 0; display: none;"></span>ntha
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Asteraceae - Gnaphalieae - Atrichantha Hilliard & B.L.Burtt

Description:

  • Dwarf shrub or subshrub to 1 m tall
  • Leaves ericoid, sessile, twisted, concave, adaxially tomentose, subtending short, densely leafy axillary shoots
  • Capitula discoid, solitary or a few in clusters, 17-140-flowered
  • Involucral bracts in 5-9 rows, imbricate, outer ones adaxially villous; stereome undivided or rarely with a few pellucid lines, lamina lanceolate, subacute, opaque, snow-white, sometimes scarlet above stereome, exceeding florets, radiant
  • Receptacle shortly alveolate
  • Disc florets bisexual, purple, lobes erect, glabrous, deltoid
  • Style branches truncate, very slightly rounded, penicillate, pilose in upper part
  • Cypselas cylindric, very obscurely 5-costate, glabrous, cells of epidermis convex or almost flat
  • Pappus subplumose above, clavate cells not spirally thickened, shaft scabrid, base with spreading, noncohering hairs

Nomenclature:

  • Atrichantha Hilliard & B.L.Burtt
    • Hilliard & Burtt: 219 (1981)
    • Anderberg: 74 (1991)
    • Anderberg & Bremer: 1061 (1991)
    • Anderberg: 330 (1994)

Distribution & Notes:

  • Southern Africa: Monotypic: Atrichantha gemmifera (Bolus) Hilliard & B.L.Burtt, endemic to the Western Cape mountains

References:

  • ANDERBERG, A.A. 1991. Taxonomy and phylogeny of the tribe Gnaphalieae (Asteraceae). Opera Botanica 104
  • ANDERBERG, A.A. 1994. Tribes Inuleae, Plucheeae, Gnaphalieae. In K. Bremer, Asteraceae, cladistics and classification. Timber Press, Portland, Oregon
  • ANDERBERG, A.A. & BREMER, K. 1991. Parsimony analysis and cladistic reclassification of the Relhania generic group (Asteraceae-Gnaphalieae). Annals of the Missouri Botanical Garden 78
  • HILLIARD, O.M. & BURTT, B.L. 1981. Some generic concepts in Compositae - Gnaphaliinae. Botanical Journal of the Linnean Society 82

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