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.
Descriptionedit
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.
^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).
^Leach, Leslie Charles. 1978. Transactions of the Rhodesia Scientific Association 59(1): 3-5
tridentea, genus, succulent, plant, family, apocynaceae, endemic, southern, africa, gemmiflora, scientific, classification, kingdom, plantae, clade, tracheophytes, clade, angiosperms, clade, eudicots, clade, asterids, order, gentianales, family, apocynaceae, s. Tridentea is a genus of succulent plant in the family Apocynaceae endemic to southern Africa 1 2 3 Tridentea Tridentea gemmiflora Scientific classification Kingdom Plantae Clade Tracheophytes Clade Angiosperms Clade Eudicots Clade Asterids Order Gentianales Family Apocynaceae Subfamily Asclepiadoideae Tribe Ceropegieae Genus TridenteaHaw Name and history edit nbsp 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 editVegetative 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 Tridentea aperta Masson L C Leach southern Africa Tridentea choanantha Lavranos amp Harry Hall L C Leach southern Africa Tridentea dwequensis C A Luckh L C Leach southern Africa Tridentea gemmiflora Masson Haw southern Africa Tridentea herrei Nel L C Leach southern Africa Tridentea jucunda N E Br L C Leach southern Africa Tridentea longii C A Luckh L C Leach southern Africa Tridentea longipes C A Luckh L C Leach southern Africa Tridentea marientalensis Nel L C Leach southern Africa Tridentea pachyrrhiza Dinter L C Leach southern Africa Tridentea parvipuncta N E Br L C Leach southern Africa Tridentea peculiaris C A Luckh L C Leach southern Africa Tridentea pedunculata Masson L C Leach southern Africa Tridentea ruschiana Dinter L C Leach southern Africa Tridentea umdausensis Nel L C Leach southern Africa Tridentea virescens N E Br L C Leach formerly included Tridentea baylissii syn of Tromotriche baylissiiReferences edit nbsp Wikimedia Commons has media related to Tridentea Tropicos Gibbs Russell G E W G M Welman E Retief K L Immelman G Germishuizen B J Pienaar M Van Wyk amp 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 Leach Leslie Charles 1978 Transactions of the Rhodesia Scientific Association 59 1 3 5 The Plant List Tridentea nbsp This Apocynaceae article is a stub You can help Wikipedia by expanding it vte Retrieved from https en wikipedia org w index php title Tridentea amp oldid 1180100818, wikipedia, wiki, book, books, library,
