The distribution of Hoodia alstonii (Trichocaulon alstonii) is mainly over 3 disjunct areas of south-western Namibia and the Northern Cape. Two prominent areas where the plants occur are the Hahlenberg in Namibia, and the Richtersveld in the Northern Cape. (According to P.V. Bruyns, Trichocaulon halenbergensis from the Hahlenberg is synonomous with Hoodia alstonii.)
The plants prefer to grow on rocky outcroppings and can inhabit very inhospitable desert areas. Sometimes the plants can attain a height of over 1 meter, making them the tallest Hoodia in the section Trichocaulon.
The yellow flowers occur on the side of the stem and the seedpods are the smallest in the genus, being only about 30 mm in length.
Although the seeds of Hoodia alstonii germinate easily, special care should be given with watering to prevent rot.
Hoodia alstonii in habitat neas Umdaus.
Hoodia alstonii stem with fowers.
Hoodia alstonii flower.
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