Euphorbia stellispina
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Euphorbia stellispina is a species of the genus spurge ( Euphorbia ) in the family of Euphorbiaceae (Euphorbiaceae).
description
The succulent Euphorbia stellispina grows as a dioecious shrub and reaches a height of 45 centimeters. Dense groups are formed by rungs from the base. The individual shoots reach 3 to 7.5 centimeters in diameter and form 10 to 16 ribs, which are provided with deep furrows in the spaces between them. These ribs are covered with rounded warts at a distance of up to 6 millimeters, which are separated from one another by transverse furrows.
The individual cyathia appear at the shoot tips. The inflorescence stalks are 4 to 10 millimeters long or longer. They carry a whorl with 3 to 5 divergent and sterile, 4 to 10 millimeter long stems. These stems become stiff and thorny and remain on the plants for a long time. The cyathia reach a diameter of up to 4 millimeters and are hairy. The elliptical nectar glands are single. The almost spherical fruit is 5 millimeters in diameter. Nothing is known about the seed.
Distribution and systematics
Euphorbia stellispina is widespread in South Africa in the Western Cape Province .
The species was first described in 1827 by Adrian Hardy Haworth . A synonym for this species is Euphorbia stellaespina hort. (nom. inval.).
A distinction is made between the following varieties:
- Euphorbia stellispina var. Atrispina (NEBr.) ACWhite & al. (1941); In contrast to the stem species, the inflorescence stalks are 0 to 6 millimeters long and the sterile stalks 5 to 17 millimeters long. A synonym for this variety is Euphorbia atrispina N.E.Br. (1915).
- Euphorbia stellispina var. Stellispina
swell
- Urs Eggli (ed.): Succulent lexicon. Dicotyledons (dicotyledons) . Eugen Ulmer, Stuttgart 2002, ISBN 3-8001-3915-4 , pp. 201-202 .
Individual evidence
- ↑ Philos. Mag. Ann. Chem. , P. 257. London 1827
