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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 '' Tromotriche'' was created for the ten species which were separated.
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'' 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