Euphorbia kaokoensis (lat. Euphorbia kaokoensis) – südləyənkimilər fəsiləsinin südləyən cinsinə aid bitki növü.
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Euphorbia kaokoensis (lat. Euphorbia kaokoensis) – südləyənkimilər fəsiləsinin südləyən cinsinə aid bitki növü.
Euphorbia kaokoensis is a rare species of plant found in certain rocky areas of Namibia and Angola. It can appear as a woody shrub or a small tree, with green leaves that pale on undersides, which contain conspicuous veins. Males produce clusters of flowers from November to January. The species is very rare, found only at a few locations, although no threats are known.
Euphorbia kaokoensis varies in size and shape from a woody shrub to a small tree, at 1.5–2.5 metres (4.9–8.2 ft) tall. The leaf lamina are subcordate, lanceolate to ovate or, less commonly, elliptic. The leaf upper sides are green, while the lower sides are paler. When dried, they can appear dark green, yellow-green, blue-green, or between violet and black. On the leaves, the middle and lateral veins are very prominent, especially on the undersides. Males produce inflorescences (flower clusters) consisting of 5 to 16 flowers (in 3–7 smaller clusters), which are 6–20 millimetres (0.24–0.79 in) long, with 20–33 stamens. The stalks of the inflorescences are 1–6 millimetres (0.039–0.236 in) in length, while the stalks of individual flowers are 1.0–3.4 millimetres (0.039–0.134 in). Fruits, which are 8–10 by 4–5 millimetres (0.31 in–0.39 in × 0.16 in–0.20 in), are normally green, but dry to chestnut, dark brown, dark purple-brown or black. The seeds are spherical, with diameters of 3–4 millimetres (0.12–0.16 in) and non-sticky arils, with colouration between dull orange and vibrant orange-red.[2] It is different in many ways from its geographically close relatives, but its stout, roughly 2 centimetres (0.79 in) thick branches are very similar to Euphorbia contorta.[3]
Euphorbia kaokoensis was first recognised as Euphorbia subsalsa var. kaokoensis in 1941 by a group of botanists, including Robert Allen Dyer.[4] In 1976, E. kaokoensis was identified as a separate species by Larry Leach. The type locality was given only as the northern Kaokoveld, in Kaokoland (modern-day Namibia).[3] Decades later in 2014, a sterile individual was observed by botanist Wessel Swanepoel in the Otjihipa Mountains. Later that year, Swanepoel sighted another specimen, this one with flowers and fruit, in the Zebra Mountains. The second specimen was the basis of a secondary description, written by Swanepoel. He explained that the specific epithet referenced the Kaokoveld, and noted that it was likely closely related to E. trichogyne. This description was published in 2019.[2]
Euphorbia kaokoensis has been recorded from a few sites in northwestern Namibia and one southwestern Angola. It is found on hillsides and the bases of rocky outcrops, around boulders, at elevations of 800–1,640 metres (2,620–5,380 ft). The area it is found receives 150–300 millimetres (5.9–11.8 in) of rainfall annually.[3]
It has been observed in flower from November to January.[2]
It is a relatively rare species overall. Swanepoel met a local Ovahimba herdsman from the area who had no knowledge of its existence.[2] Despite its rarity, Swanepoel pointed out that it did not appear to be exploited by humans or other animals, so he recommended that the International Union for the Conservation of Nature (IUCN) classify it as vulnerable.[2] Currently however, the organisation lists it as Least Concern, with its last assessment in 2004.[1]
Euphorbia kaokoensis is a rare species of plant found in certain rocky areas of Namibia and Angola. It can appear as a woody shrub or a small tree, with green leaves that pale on undersides, which contain conspicuous veins. Males produce clusters of flowers from November to January. The species is very rare, found only at a few locations, although no threats are known.
Euphorbia kaokoensis, es una especie fanerógama perteneciente a la familia de las cactáceas. Es endémica de Angola y Namibia.[2] Su natural hábitat son las áreas rocosas.
Es un arbusto espinoso denso y fuerte que alcanza un tamaño de 50 cm de alto; y con tallos de 2 cm de diámetro, 5-7 nervada; espinas color marrón en la base de las ramas, planta que parece tener una corona roja en la distancia.[3]
Se encuentra en las pendientes rocosas, grietas y fisuras en de piedra en los bosques de mopane, crestas de piedra caliza, suelos pedregosos, y a lo largo de los afloramientos rocosos, a una altitud de 770 metros.
Euphorbia kaokoensis fue descrita por (A.C.White, R.A.Dyer & B.Sloane) L.C.Leach y publicado en Dinteria: contributions to the flora of South West Africa 12: 33. 1976.[4]
Euphorbia: nombre genérico que deriva del médico griego del rey Juba II de Mauritania (52 a 50 a. C. - 23), Euphorbus, en su honor – o en alusión a su gran vientre – ya que usaba médicamente Euphorbia resinifera. En 1753 Carlos Linneo asignó el nombre a todo el género.[5]
kaokoensis: epíteto geográfico que alude a su localización en Kaokolandia.
Datos: Q1335731
Euphorbia kaokoensis, es una especie fanerógama perteneciente a la familia de las cactáceas. Es endémica de Angola y Namibia. Su natural hábitat son las áreas rocosas.
Euphorbia kaokoensis là một loài thực vật thuộc họ Euphorbiaceae. Đây là loài đặc hữu của Namibia. Môi trường sống tự nhiên của chúng là vùng nhiều đá.
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