Euphorbia atrox
| Euphorbia atrox | ||||||||||||
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| Euphorbia atrox | ||||||||||||
| S. Carter |
Euphorbia atrox is a species of the genus milkweed ( Euphorbia ) in the family of the milkweed family(Euphorbiaceae).
description
The succulent Euphorbia atrox grows from a fibrous root and forms cushions up to 30 centimeters high and 40 centimeters in diameter. The short shoots are 1.5 to 2.5 centimeters thick and are covered with clearly raised warts that are at a distance of up to 1.5 centimeters from each other. The warts are arranged in 5 rows that spiral around the shoot. The elongated thorn shields sit above the warts, stand individually and are up to 10 millimeters long and 3.5 millimeters wide. Strong thorns up to 2.5 centimeters in length are formed.
The inflorescence is formed by one to three simple cymes in a vertical line . They stand on a 1 millimeter long handle. The cyathia are 3.5 millimeters in size and the triangular, adjoining nectar glands are colored yellow. The clearly lobed fruit is 2.7 millimeters long and 3.7 millimeters wide. It stands on a 4 millimeter long and bent back handle. The egg-shaped seed becomes about 2 millimeters in size and is covered with very small warts.
Distribution and systematics
Euphorbia atrox is widespread in the north-east of Somalia in the Bari region on rocky slopes with gappy shrubbery at altitudes of 90 to 550 meters.
The species was first described in 1992 by Susan Carter Holmes .
swell
- Urs Eggli (ed.): Succulent lexicon. Dicotyledons (dicotyledons) . Eugen Ulmer, Stuttgart 2002, ISBN 3-8001-3915-4 , pp. 116 .
Individual evidence
- ↑ Nordic Journal of Botany. Volume 12, No. 4, p. 418 Copenhagen 1992
Web links
- Photos of the kind at davesgarden.com
- Brief description and photos of the species at llifle.com