Euphorbia ammak
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Euphorbia ammak |
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Euphorbia ammak is a species of the genus spurge ( Euphorbia ) in the family of Euphorbiaceae (Euphorbiaceae).
description
The succulent Euphorbia ammak forms trees up to 10 meters high with upright and curved main shoots. The square shoots reach a thickness of 12 to 15 centimeters. On the wing-like edges there are bulky teeth at a distance of up to 1 centimeter from one another. The inverted triangular thorn shields stand individually. Thorns up to 1 centimeter in length are formed. The lanceolate leaves on seedlings are up to 40 millimeters long and up to 7 millimeters wide; on younger shoots of older plants, the leaves are not that large.
The inflorescence is formed from individual, simple and almost sedentary cymes . The cyathia reach about 10 millimeters in diameter. The nectar glands are elliptical and the ovary is provided with a three-lobed, slit flower cover. The deeply lobed fruit stands on a thick, 9 to 14 millimeter long stem and is 9 millimeters long and 14 millimeters wide. The almost round and smooth seed reaches 3 millimeters in diameter.
Distribution and systematics
Euphorbia ammak is common in the Arabian Peninsula . The species is on the IUCN Red List and is considered endangered (Vulnerable).
The species was first described in 1899 by Georg Schweinfurth .
swell
- Urs Eggli (ed.): Succulent lexicon. Dicotyledons (dicotyledons) . Eugen Ulmer, Stuttgart 2002, ISBN 3-8001-3915-4 , pp. 111 .
Individual evidence
Web links
- Euphorbia ammak onthe IUCN Red List of Threatened Species .
- Photos of the species at arkive.org