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Euphorbia ankazobensis

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Euphorbia ankazobensis
System
Family: Spurge family (Euphorbiaceae)
Subfamily: Euphorbioideae
Tribus: Euphorbieae
Subtrib: Euphorbiinae
Genre: Spurge(Euphorbia)
Art: Euphorbia ankazobensis
Scientific name
Euphorbia ankazobensis
Rauh & Hofstätter

Euphorbia ankazobensis is a species of plant in the spurge genus(Euphorbia) in the spurge family (Euphorbiaceae).

Description

The succulent Euphorbia ankazobensis forms shrubs with many shoots and moderate branching up to 50 centimetres high or more. The stem-round twigs grow up to 1.5 centimetres thick. The ovate leaves are in rosettes at the ends of the shoots. They are nearly stalkless, growing to 3.5 centimeters long and 1.5 centimeters wide. The upper side is blue-green, the underside lighter in colour, and a short point is formed at the tip of the leaf. The stipule spines, 5 to 10 millimeters long, are narrow and thickened at the base. Straight stipule spines are red in colour and fall off later.

Individual cymens are formed, which have a stalk about 1 centimeter long. The broadly ovoid cyathophylls spread to 7 millimeters and are yellow-green in color. The cyathia grow to 3 millimeters and the elongated, touching nectar glands are greenish yellow in color. The spherical fruit reaches 7 millimeters in diameter.

Distribution and systematics

Euphorbia ankazobensis is endemically distributed in central Madagascar near Antananarivo. The species is on the IUCN Red List and is considered Critically Endangered.[1]

The species was first described in 2000 by Werner Rauh and Siegfried Hofstätter.[2] It has great similarity with Euphorbia fianarantsoae.

Sources

  • Urs Eggli (ed.): Sukkulenten-Lexikon. Dicotyledonous plants (Dicotyledons). Eugen Ulmer, Stuttgart 2002, ISBN 3-8001-3915-4, p. 112.

Individual references

  1. Euphorbia ankazobensis in the IUCN Red List of Threatened Species 2021. submitted by: Haevermans, T., 2004. retrieved 1 February 2021.
  2. Succulentes. Number 3, 2000, p. 6 Monte-Carlo