Wednesday, February 6, 2008

Do you Adenium?

Adenium is a genus of flowering plants in the family Apocynaceae, containing a single species, Adenium obesum, also known as Sabi Star, Kudu or Desert-rose. It is native to tropical and subtropical eastern and southern Africa and Arabia.

It is an evergreen succulent shrub in tropical climates and semi-deciduous to deciduous in colder climates, is also dependant on the particular species. Growing to 1-3 m in height, with pachycaul stems and a stout, swollen basal caudex. The leaves are spirally arranged, clustered toward the tips of the shoots, simple entire, leathery in texture, 5-15 cm long and 1-8 cm broad. The flowers are tubular, 2-5 cm long, with the outer portion 4-6 cm diameter with five petals, resembling those of other related genera such as Plumeria and Nerium. The flowers tend to red and pink, often with a whitish blush outward of the throat.

Several regional subspecies occur:
Adenium obesum subsp. boehmianum. Namibia, Angola.
Adenium obesum subsp. obesum. Arabia.
Adenium obesum subsp. oleifolium. South Africa, Botswana.
Adenium obesum subsp. socotranum. Socotra.
Adenium obesum subsp. somalense. Eastern Africa.
Adenium obesum subsp. swazicum. Eastern South Africa.
These subspecies are often considered proper species.

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