Jump to content

Tridentea

From Wikipedia, the free encyclopedia

This is an old revision of this page, as edited by DeprecatedFixerBot (talk | contribs) at 19:22, 14 May 2018 (Removed deprecated parameter(s) from Template:Columns-list using DeprecatedFixerBot. Questions? See Template:Div col#Usage of "cols" parameter or msg TSD! (please mention that this is task #2!))). The present address (URL) is a permanent link to this revision, which may differ significantly from the current revision.

Tridentea
Tridentea gemmiflora
Scientific classification
Kingdom:
Plantae
(unranked):
Angiosperms
(unranked):
Eudicots
(unranked):
Asterids
Order:
Gentianales
Family:
Apocynaceae
Subfamily:
Asclepiadoideae
Genus:
Tridentea

Haw.

Tridentea is a genus of succulent plant in family Asclepiadaceae, endemic to southern Africa.[1][2][3]

Name and history

Stem specimen showing leaf remnants and flower stem

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[4]
  1. Tridentea aperta (Masson) L.C. Leach - southern Africa
  2. Tridentea choanantha (Lavranos & Harry Hall) L.C. Leach - southern Africa
  3. Tridentea dwequensis (C.A. Lückh.) L.C. Leach - southern Africa
  4. Tridentea gemmiflora (Masson) Haw. - southern Africa
  5. Tridentea herrei (Nel) L.C. Leach - southern Africa
  6. Tridentea jucunda (N.E. Br.) L.C. Leach - southern Africa
  7. Tridentea longii (C.A. Lückh.) L.C. Leach - southern Africa
  8. Tridentea longipes (C.A. Lückh.) L.C. Leach - southern Africa
  9. Tridentea marientalensis (Nel) L.C. Leach - southern Africa
  10. Tridentea pachyrrhiza (Dinter) L.C.Leach - southern Africa
  11. Tridentea parvipuncta (N.E. Br.) L.C. Leach - southern Africa
  12. Tridentea peculiaris (C.A. Lückh.) L.C. Leach - southern Africa
  13. Tridentea pedunculata (Masson) L.C. Leach - southern Africa
  14. Tridentea ruschiana (Dinter) L.C. Leach - southern Africa
  15. Tridentea umdausensis (Nel) L.C. Leach - southern Africa
  16. Tridentea virescens (N.E. Br.) L.C. Leach
formerly included

Tridentea baylissii, syn of Tromotriche baylissii

Wikimedia Commons has media related to Tridentea.

References

  1. ^ Tropicos
  2. ^ 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 southern African plants. Memoirs of the Botanical Survey of South Africa 2(1–2): 1–152(pt. 1), 1–270(pt. 2).
  3. ^ Leach, Leslie Charles. 1978. Transactions of the Rhodesia Scientific Association 59(1): 3-5
  4. ^ The Plant List, Tridentea


Stub icon

This Apocynaceae article is a stub. You can help Wikipedia by expanding it.

Retrieved from "https://en.wikipedia.org/w/index.php?title=Tridentea&oldid=841248270"