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''Tridentea'' is a genus of succulent plant in the family Apocynaceae, endemic to southern Africa.
''Tridentea'' was first described as a genus in 1812, and its name refers to the three "teeth" on each interstaminal segment of its flower (''"tri-"'' = three; ''"dentis"'' = teeth). It was subsequently split, and the genus ''
The Plant List, ''Tridentea''
/ref> ;formerly included ''Tridentea baylissii'', syn of '' Tromotriche baylissii''
Name and history
''Tridentea'' was first described as a genus in 1812, and its name refers to the three "teeth" on each interstaminal segment of its flower (''"tri-"'' = three; ''"dentis"'' = teeth). It was subsequently split, and the genus ''Tromotriche
''Tromotriche'' is a genus of plant in family Apocynaceae. It is native to southern Africa.Gibbs Russell, G. E., W. G. M. Welman, E. Retief, K. L. Immelman, G. Germishuizen, B. J. Pienaar, M. Van Wyk & A. Nicholas. 1987. List of species of southe ...
'' was created for the ten species which were separated.
Description
;Vegetative features ''Tridentea'' stems are typically smooth, soft and appear as roughly four-edged in cross section. The four angles are marked by rows of low tubercle mounds. In young growth, each tubercle bears a small splayed leaf-remnant. These fall off with time though. Each leaf remnant is always surrounded by several minute, fat hairs. ;Floral features ''Tridentea'' flowers are flattened, star-shaped, and usually brightly coloured. The most common colouring is a mixed mottling of greenish-yellow with purple. Their inside is usually densely papillate. Flowers appear on minute inflorescences, and each stem bears only one inflorescence, from the stem base. ;Species/ref> ;formerly included ''Tridentea baylissii'', syn of '' Tromotriche baylissii''
References
Apocynaceae genera Flora of Southern Africa Taxonomy articles created by Polbot {{Apocynaceae-stub