e-Key <span id="jodit_selection_marker_1710232171709_9595941500485883" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>v3 - Haploc<span id="jodit_selection_marker_1710232171709_6932876212474854" data-jodit_selection_marker="end" style="line-height: 0; display: none;"></span>arpha
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Asteraceae - Arctoteae - Haplocarpha Less.

Description:

  • Perennial, mat-forming, acaulescent herbs, woolly, with stout rootstocks
  • Leaves radical, sessile or narrowed into petiole, entire, toothed or pinnatifid, lower surface whitish-woolly
  • Capitula radiate, many-flowered, solitary, terminal, peduncled
  • Involucre campanulate; bracts in few to many rows, scarious-hyaline on margins
  • Receptacle flat or convex, epaleate
  • Ray florets female, fertile; corolla yellow, strap-shaped; tube pilose at base, with ± linear-oblong, 3-toothed lamina, 3-5 times longer than tube; staminodes sometimes present
  • Disc florets many, bisexual; corolla yellow, infundibuliform, deeply 5-lobed
  • Anthers sagittate at base
  • Style abruptly thickened below branches; branches connate or minutely bifid
  • Cypselas turbinate, ribbed, glabrous, minutely pubescent or silky-villous, with basal coma of long or short hairs
  • Pappus in 2 to several rows occasionally reduced or 0; inner pappus of delicate, hyaline, lanceolate scales equalling corolla tube in length; outer pappus smaller
  • x = 5, 6, 9 (polyploidy)

Nomenclature:

  • Haplocarpha Less.
    • Lessing: 90 (1831)
    • Oliver & Hiern: 427 (1877)
    • Beauverd: 50 (1915)
    • Lewin: 50 (1922)
    • Phillips: 843 (1951)
    • Hilliard: 537 (1977)
    • Pope: 232 (1992)
    • Bremer: 260 (1994)

Distribution & Notes:

  • Global: Species 10, Africa
  • Southern Africa: Species 5, widespread, absent from Namibia and Botswana

References:

  • BEAUVERD, G. 1915. Conspectus generum specierumque Arctotidinearum. Bulletin de la Société Botanique de Genève 7
  • BREMER, K. 1994. Asteraceae, cladistics & classification. Timber Press, Portland, Oregon
  • HILLIARD, O.M. 1977. Compositae in Natal. University of Natal Press, Pietermaritzburg
  • LESSING, C.F. 1831. Synanthereae Rich. Linnaea 6
  • LEWIN, K. 1922. Systematische Gliederung und geographische Verbreitung der Arctotideae-Arctotidinae. Feddes Repertorium, Beiheft 11
  • OLIVER, D & HIERN, W.P. 1877. Compositae. Flora of tropical Africa 3
  • PHILLIPS, E.P. 1951. The genera of South African flowering plants, edn 2. Memoirs of the Botanical Survey of South Africa No. 25
  • POPE, G.V. 1992. 97. Compositae. Flora zambesiaca 6,1