Haworthiopsis coarctata

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Haworthiopsis coarctata
Haworthia coarctata CologneUni.jpg
Scientific classification e
Kingdom: Plantae
Clade: Angiosperms
Clade: Monocots
Order: Asparagales
Family: Asphodelaceae
Subfamily: Asphodeloideae
Tribe: Aloeae
Genus: Haworthiopsis
Species: H. coarctata
Binomial name
Haworthiopsis coarctata
(Haw.) J.D.Rowley[1]
Synonyms[1]
  • Haworthia coarctata Haw.
  • Aloe coarctata (Haw.) Schult. & Schult.f.
  • Catevala coarctata (Haw.) Kuntze
  • Haworthia reinwardtii var. coarctata (Haw.) Halda
  • Haworthia reinwardtii subsp. coarctata (Haw.) Halda
  • Haworthiopsis reinwardtii var. coarctata (Haw.) Breuer

Haworthiopsis coarctata, formerly Haworthia coarctata, is a species of flowering succulent plant from the Eastern Cape Province, South Africa and naturalized in Mexico. It is one of the species of Haworthiopsis that is commonly cultivated as an ornamental.

Description[edit]

H. coarctata grows in large clumps in its natural habitat, with long stems packed with robust succulent leaves. It is normally dark green but sometimes acquires a rich purple-red when in full sunlight.

It is frequently confused with Haworthiopsis reinwardtii, which occurs just to the east of its natural range. However H. coarctata has smaller, smoother and rounder tubercles on its leaves (those of H.reinwardtii are sometimes larger, flatter and whiter). H. coarctata also usually has much wider, fatter leaves.[2]

Forms and varieties[edit]

This is a variable species, and several forms and varieties are recognised. Several are listed below:

  1. H. coarctata var. adelaidensis (Poelln.) M.B.Bayer; longer narrower leaves than type
  2. H. coarctata var. coarctata; the type variety
  3. H. coarctata f. chalwinii Haw.; leaves abnormally wide
  4. H. coarctata f. greenii (Baker) M.B.Bayer; smooth leaves with tubercles mostly absent
  5. H. coarctata f. tenuis (G.G.Sm.) M.B.Bayer; narrow stems and thinner leaves

References[edit]

  • Haw., Phil. Mag. J. 66: 301 (1824).
  • The Complete Book of Cacti and Succulents, By Terry Hewitt