e-Key <span id="jodit_selection_marker_1709025016703_3616162371719316" data-jodit_selection_marker="start" style="line-height: 0; display: none;"></span>v3 - Deil<span id="jodit_selection_marker_1709025016703_41114860244366036" data-jodit_selection_marker="end" style="line-height: 0; display: none;"></span>anthe
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Mesembryanthemaceae - Ruschioideae - Titanopsis Group - Deilanthe N.E.Br.

Description:

  • Almost stemless tufted perennials with a thick and firmly fleshy rootstock, deeply rooting
  • Leaves opposite, united at base in sparse rosettes, spatulate-ovate or spatulate-lanceolate, flat on ground to erect, dark green to reddish brown and inconspicuously dotted, velvety
  • Flowers solitary or in delayed sets of three, pedicellate, bracteate at base of thick pedicel; opening in late afternoon or evening
  • Sepals 5, subequal
  • Petals in 3 or 4 series, free, linear to narrowly spatulate, pale to deep yellow or a greyish salmon colour sometimes obscurely striped with white
  • Stamens erect, in a loose cylindrical mass, papillate
  • Nectary glands large, in a crenulate ring
  • Ovary flattish or slightly convex on top, glassy; placentas basal to parietal; stigmas 8-12, erect, subulate
  • Fruit a 8-12-locular capsule, shortly obconic, flattish at top, with raised sutures; valves narrowly deltoid, with a very prominent, acute keel on inner face; expanding keels diverging from base, ± half as long as valve, each tipped with a pallid awn reaching nearly to tips of valves, and with short, broad, membranous marginal wings at base united in pairs between valves; covering membranes rather stiff, closing bodies small
  • Seeds pear-shaped, smooth
  • Flowering from winter to early spring
  • Distinguishing characters:
    • Rosette-forming perennials with tuberous roots
    • Leaves spatulate-ovate or spatulate-lanceolate, velvety and often dust-covered
    • Flowers deep yellow to salmon-coloured, opening in the afternoon

Nomenclature:

  • Deilanthe N.E.Br.
    • Brown: 137 (1931)
    • Hammer: 172 (1995)
    • Smith et al.: 160 (1998)
  • Aloinopsis Schwantes, in part

Distribution & Notes:

  • Southern Africa: Species 2, widespread in the Little and Great Karoos in the central Western Cape, extending slightly into the Northern and Eastern Cape
    • Species of Deilanthe grow from Anysberg in the southwest to Luckhoff in the northeast
    • A single species, D. peersii (L.Bolus) N.E.Br., occurs in the Free State

References:

  • BROWN, N.E. 1931. Mesembryanthemum and some new genera separated from it. Gardeners' Chronicle 89
  • HAMMER, S.A. 1995. New nothogenera, and a new combination in Mesembryanthema. Cactus and Succulent Journal (U.S.) 67
  • SMITH, G.F., CHESSELET, P., VAN JAARSVELD, E.J., HARTMANN, H., HAMMER, S., VAN WYK, B-.E., BURGOYNE, P., KLAK, C. & KURZWEIL, H. 1998. Mesembs of the world. Briza, Pretoria