Euphorbia arahaka
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Euphorbia arahaka |
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Euphorbia arahaka is a species of the genus spurge ( Euphorbia ) in the family of Euphorbiaceae (Euphorbiaceae).
description
The succulent Euphorbia arahaka forms trees up to 3 meters high. The shoots branch out densely in whorls over a trunk that is up to 2 meters high and 20 centimeters in diameter . The branches are divided into 10 to 15 centimeters long, slightly flattened sections that are up to 3 millimeters thick. The sedentary leaves are up to 9 millimeters long and 3 millimeters wide. They are short-lived and leave clear leaf scars.
Simple and terminal cymes are formed, which are very close to a 3 millimeter long stem. The male cyathia are also very dense and reach 4 millimeters in diameter. One or two of the female cyathia are always side by side and they are about 2 millimeters in diameter. The nectar glands are elliptical in shape and the spherical fruits are 8 millimeters tall and stand on a 6 millimeter long stem. The elongated seed becomes 4.5 millimeters long and 3.5 millimeters wide.
Distribution and systematics
Euphorbia arahaka is widespread in the southeast of Madagascar near Taolanaro . The species is on the IUCN Red List , but is not considered endangered (Least Concern).
The species was first described in 1912 by Henri Louis Poisson as part of his doctoral thesis.
swell
- Urs Eggli (ed.): Succulent lexicon. Dicotyledons (dicotyledons) . Eugen Ulmer, Stuttgart 2002, ISBN 3-8001-3915-4 , pp. 114 .
Individual evidence
- ↑ Research on the Flore Méridionale de Madagascar. Pp. 51-52 Paris 1912
