Hoodia grandis (coleorum) seems confined to the area south of Calitzdorp in the Little Karoo. The distribution of these plants from the section Trichocaulon is adjunct and far removed from any other plants of Hoodia grandis, which are largely inhabitants of the area south of Laingsburg.
The yellow flowers are notably different to other Hoodia grandis, but according to P.V. Bruyns show enough affinity with the other members of this quite variable species to justify its taxonomical position.
The coleorum form is a very interesting discovery as it occurs in the distribution area of Hoodia pilifera subsp. pilifera, the only other, and rather uncommon, but widespread Hoodia species of the Little Karoo.
Synonymns: Hoodia coleorum, Hoodia colei.
Hoodia grandis (coleorum) in habitat south of Calitzdorp.
Hoodia grandis (coleorum) stem with flowers.
Hoodia grandis (coleorum) flower.
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