Uncarina grandidieri
Uncarina grandidieri | ||||||||||||
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Uncarina grandidieri |
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Systematics | ||||||||||||
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Scientific name | ||||||||||||
Uncarina grandidieri | ||||||||||||
( Baill. ) Ihlenf. & Straka |
Uncarina grandidieri is a species of the genus Uncarina in the sesame family (Pedaliaceae).
description
Uncarina grandidieri grows as a small tree with a densely branched crown, is up to 3.5 meters high and the trunk diameter can reach 30 centimeters. The only slightly lobed leaves are 14 centimeters long and 19 centimeters wide. 3 to 5 larger, blunt lobes are formed and 2 smaller, rather inconspicuous lobes that are arranged near the base of the leaf. There is hardly any color difference between the top and bottom of the leaf, compared to U. decaryi . On the upper side, only a few hairs with a reduced head are formed, while the underside is provided with a denser arrangement of mucous glands with a short stem and long and short-stemmed hair with a likewise reduced head.
The inflorescence consists of cymes with 3 to 9 individual flowers that are in large clusters. The golden yellow to yellow flowers have a dark red discoloration in the throat, from which red lines run to the base of the lower lobe. The discoloration can sometimes be absent. The flower tube is about 5 centimeters long.
The fruit, squeezed at the side, is egg-shaped when viewed from the side and has a long, narrow and pointed beak . The fruits are 7 inches long and 4 inches wide. Two different forms of spines are formed on the fruit. The hook spines, up to 20 millimeters long, are about five in a row, and they do not go beyond the beak. The base of the spines is broadened. The numerous simple spines are up to 3 millimeters long. No false partitions are formed. The obovate seeds are 8 millimeters long and 5 millimeters wide. The wings are 0.5 millimeters in size.
Distribution and systematics
Uncarina grandidieri is endemic to the southwest and south of Madagascar , in the southwest and south of the province of Toliara on limestone soils.
The first description of the species as Harpagophytum grandidieri Baill. , made in 1887 by Henri Ernest Baillon . Hans-Dieter Ihlenfeldt and Herbert Straka put the species in the genus Uncarina in 1962 . Other synonyms for Uncarina grandidieri (Baill.) Ihlenf. & Straka are Uncaria grandidieri (Baill.) Kuntze , Harpagophytum dimidiatum Baill. , Uncarina dimidiata (Baill.) Ihlenf. & Straka and Uncarina didieri Stapf .
Uncarina grandidieri is the type species of the genus.
literature
- H.-D. Ihlenfeldt: Uncarina . In: Urs Eggli (Hrsg.): Succulent lexicon. Volume 2: Dicotyledons (dicotyledons) , Ulmer, Stuttgart 2002, ISBN 3-8001-3915-4 , p. 381 f.