e-Key v3 - Hartmanthus
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Interactive keys to the identification of seed plants of southern Africa using keys based on plant morphology.

Mesembryanthemaceae - Ruschioideae - Dracophilus Group - Hartmanthus S.A.Hammer

Description :

  • Compact, small to medium-sized shrublets, with erect or somewhat spreading, woody branches
  • Leaves greenish grey to silvery, strongly compressed lengthwise and keeled on back; leaf margins not very sharp, often with a reddish tinge in full sun; leaf surfaces rough to the touch
  • Flowers in long, flattened and long-lived inflorescences, faintly scented
  • Sepals 5, unequal
  • Petals almost white to light or distinctly pink
  • Nectary a crenulate ring, or of 5 separate, crenulate glands
  • Ovary with basal-parietal placentas
  • Fruit a 6-locular capsule, of Delosperma type; whitish; expanding keels parallel, yellowish; valve wings large; covering membranes 0; closing bodies 0
  • Seeds medium-sized, pear-shaped, rather glossy
  • Flowering during late winter and early spring
  • Distinguishing characters :
    • Compact shrublets
    • Leaves greenish grey to silvery green, laterally flattened, sometimes rough, shrinking unevenly when dehydrated, leaf margins reddish purple
    • Pedicel strongly flattened

Nomenclature:

  • Hartmanthus S.A.Hammer
    • Hammer: 77 (1995)
    • Smith et al.: 282 (1998)
  • Delosperma N.E.Br. emend. Lavis in part

Distribution & Notes:

  • Southern Africa : Species 2, in very arid regions in the northern Richtersveld, Northern Cape, and in the Sperrgebiet in S Namibia

References:

  • HAMMER, S.A. 1995. Hartmanthus , a new genus in Aizoaceae . Haseltonia 3
  • 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