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Orbea paradoxa (I.Verd.) L.C.Leach식물/들꽃-Asclepiadaceae과 2024. 10. 15. 14:06
국표에 없다.
Origin and Habitat: Orbea paradoxaSN|30610]]SN|30610]] has been recorded mostly on coastal plains in southern Mozambique and around Pongola in the south-eastern Transvaal. It extends further into northern KwaZulu-Natal, in eastern Swaziland and near Komatipoort in Mpumalanga.
Habitat and ecology: Arid bushveld.
Altitude range: 20 - 300 metres above sea level.Common Names include:
ENGLISH: Paradoxical orbea
ZULU (isiZulu): UmanhlangwaneDescription: 0rbea paradoxa (Stultitia paradoxaSN|30611]]SN|30611]]) is a rhizomatous, leafless dwarf perennial succulent species, forming small clumps of erect stems above ground that, like those of Orbea maculate, spreads by horizontal underground rhizomes. The long-toothed stems are Orbea-like in character, but the small, campanulate flowers with dark red annulus at the mouth of the tube (6.5 mm deep) lean more to-wards the genus Pachycymbium. This led to many disputes among botanists in deciding its generic position, and finally Leach placed it in a section of its own in Orbea.
Derivation of specific name: The specific epithet is derived from the Latin for unexpected or unusual.
Stem: Extremely rhizomatous. Above ground stems mottled, 4-angled erect, fairly slender with prominent tubercles along the angles. These tubercles are distinctly flattened towards the apex, and this flattened part constitutes the leaf-rudiment. Towards the base of this flattened area the margins are extended into 1-3 spreading denticles (toothlets) on each side (i.e., up to 6 denticles per tubercle). This multitude of small denticles around the apex of the tubercle immediately distinguishes this species from any other in the area.
Flowers: Solitary or in pairs. The flowers of O. paradoxa are fairly small but make up for this by having an unusual colouring and a very foul smell of rotten meat. The corolla is campanulate with a dark red annulus at the mouth of the shallow tube (6.5 mm deep) which, from the outside of the flower, has a more or less funnel-like shape, the annulus often rises out of the tube and projects inwards as a thin wall, thereby considerably constricting the mouth of the tube. The interior of the corolla is greenish-white to yellowish with reddish purple markings, smooth and quite shiny, except for fine papillae near the tips of the lobes and few to many short, fleshy hairs in the base of the tube, while the margins of the corolla lobes have a distinct fringe of purple, spoon-like vibratile cilia (hairs), the cilia are densest at the sinuses between the lobes, at which point there is also a short, fleshy spur. This whole arrangement, with its colouring and evil smell, somewhat resembles a festering wound on the skin of a mammal.
Blooming season: Flowering time is very dependent on the rains, as it grows in heavy soils; usually November-January in habitat.https://youtu.be/0ckjJIkzYLk?t=1276
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