Euphorbia breviarticulata
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Euphorbia breviarticulata |
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Euphorbia breviarticulata is a species of the genus spurge ( Euphorbia ) in the family of Euphorbiaceae (Euphorbiaceae).
description
The succulent Euphorbia breviarticulata forms branched shrubs up to 4 meters high from the base. The often triangular shoots are up to 12 centimeters wide and divided into segments about 8 centimeters long by deep constrictions. The heavily winged edges are often provided with yellow transverse stripes and have cupped teeth at a distance of 1 to 4 centimeters from each other. The thorn shields that have grown together form a horn edge 2 to 8 millimeters wide. The very strong thorns are up to 8 centimeters long. The stipule spines are up to 2 millimeters long and there are additional thorns up to 5 millimeters long on both sides of the inflorescences.
The inflorescence is formed from three to seven common and simple cymes , which stand on 3 to 12 millimeter long stems. The cyathia are 9 millimeters in size. The elongated nectar glands are colored yellow and butt against each other. The ovary is surrounded by a three-lobed flower cover. The clearly lobed fruit is about 9 millimeters long and 18 millimeters wide. It stands on a handle up to 5 millimeters long. The spherical seed is 3.5 millimeters in size and has a smooth surface.
Distribution and systematics
Euphorbia breviarticulata is common in East Africa.
The species was first described in 1904 by Ferdinand Albin Pax .
A distinction is made between the following varieties:
- Euphorbia breviarticulata var. Breviarticulata ; Distribution: in the south of Somalia , in Ethiopia , in Kenya and in the northeast of Tanzania in the dry acacia forest at altitudes of 60 to 1200 meters, a synonym for this species is Euphorbia grandilobata Chiov. (1932)
- Euphorbia breviarticulata var. Trunciformis S.Carter ; Distribution: on the border between Kenya and Ethiopia in dense acacia forest at an altitude of 700 to 800 meters, in contrast to the trunk species a trunk up to 1 meter long or even longer is formed or even trees up to 6 meters high are formed with the lower ones Branches are thrown off
swell
- Urs Eggli (ed.): Succulent lexicon. Dicotyledons (dicotyledons) . Eugen Ulmer, Stuttgart 2002, ISBN 3-8001-3915-4 , pp. 123 .
Individual evidence
- ^ Botanical yearbooks for systematics, plant history and plant geography. , Volume 34, pp. 84–85, Leipzig 1905 ( online )
Web links
- Information and photos about the species at euphorbia.de