e-Key <span id="jodit_selection_marker_1710240530327_0007835986469011402" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>v3 - Hirpi<span id="jodit_selection_marker_1710240530327_7811566417334341" data-jodit_selection_marker="end" style="line-height: 0; display: none;"></span>cium
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Asteraceae - Arctoteae - Hirpicium Cass.

Description:

  • Annual or perennial herbs, subshrubs or shrubs
  • Leaves alternate, sometimes fascicled, ericoid or lanceolate, sometimes scabrid and pungent and whitish-woolly beneath
  • Capitula radiate, many-flowered, solitary, terminal, pedunculate or subsessile
  • Involucre campanulate; bracts connate into cup-like base, sometimes setose, with lobes sometimes partially reflexed
  • Receptacle conical, honeycombed
  • Ray florets neuter; corolla yellow, strap-shaped; tube flattened with lamina linear, 3-toothed; staminodes sometimes present
  • Disc florets bisexual, fertile; corolla yellow, tubular, slightly widened above, with 5 linear lobes, setose on back
  • Anthers minutely sagittate
  • Style terete, thickened above, with linear branches
  • Cypselas obconical, ± ribbed, pilose
  • Pappus generally of 2 distinct rows, each of 10 broad scales, with inner row of short scales and outer row of slender, membranous scales or of scales divided into linear segments ± as long as corolla tube
  • x = 5

Nomenclature:

  • Hirpicium Cass.
    • Cassini: 27 (1820)
    • Harvey: 485 (1865)
    • Phillips: 845 (1951)
    • Roessler: 333 (1959)
    • Roessler: 86 (1975)
    • Bremer: 262 (1994)
  • Berkheyopsis O.Hoffm.
    • Hoffmann: 311 (1892)

Distribution & Notes:

  • Global: Species 12, southern and tropical Africa
  • Southern Africa: Species 8, widespread

References:

  • BREMER, K. 1994. Asteraceae, cladistics & classification. Timber Press, Portland, Oregon
  • CASSINI, A.H.G. DE. 1820. Bulletin de la Société Philomatique de Paris February 1820
  • HARVEY, W.H. 1865. Compositae. Flora capensis 3
  • HOFFMANN, K.A.O. 1890-1894. Compositae. Die natürlichen Pflanzenfamilien 4,5
  • PHILLIPS, E.P. 1951. The genera of South African flowering plants, edn 2. Memoirs of the Botanical Survey of South Africa No. 25
  • ROESSLER, H. 1959. Revision der Arctotideae - Gorteriinae (Compositae). Mitteilungen der Botanischen Staatssamlung München 3
  • ROESSLER, H. 1975. The Compositae of the Flora zambesiaca area, 5 - subtribe Gorteriinae. Kirkia 10