Astragalus friederikeanus
| Astragalus friederikeanus | ||||||||||||
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| Scientific name | ||||||||||||
| Astragalus friederikeanus | ||||||||||||
| Kit Tan & Tim. |
Astragalus friederikeanus is a plant from the family of legumes (Fabaceae). The species is endemic to southern Anatolia and was first described in 2007.
description
Astragalus friederikeanus is a perennial, herbaceous plant that reaches a height of 10 to 20 centimeters. The woody caudex , a thickening of the trunk base, is branched and covered with almost lying, white and forked hair, which is between 0.2 and 0.4 millimeters long, black hair is missing. The several, at the 2 to 3 millimeter thick base branching, slightly spread to upright and streaky-furrowed stems reach a length of up to 15 centimeters.
The herbaceous, weakly ciliate and at the base with the petioles fused stipules are 4 to 7 millimeters long, triangular to triangular-lanceolate and short acuminate. The leaves are pinnate unpaired and reach a length of 3.5 to 6 centimeters, of which 0.5 to 1 centimeter are petioles. The leaflets stand in four to seven pairs, are narrow-elliptical to (narrow) elongated-round ovate, 5 to 12 millimeters long, 2 to 4 millimeters wide and finely dotted. Their upper side is green, bald or only very scattered with white hairs, the underside is covered with white, silky, forked bristle hairs.
The inflorescence axes, which usually grow from the axils of the upper leaves, are 4 to 6 centimeters long and have four to five wide-open flowers in the 1.5 to 2.5 centimeters long racemose inflorescences . The lanceolate, tapering bracts are about 2 millimeters long and ciliate or covered with attached hairs, each flower has a cover sheet that is about 1 millimeter small. The flower stalks are 3.5 to 4 millimeters long and hairy white. The calyx is unequal five-toothed, bell-shaped and around 5 millimeters long. The upper calyx lobes are narrowly triangular and about 1 millimeter long, the two lower, straw-like calyx teeth are broadly triangular, covered with white, laid-out and forked hairs, ciliate at the tip and a dark spot at the base. The petals are yellowish and glabrous. The flag (the rear, largest leaf) is approximately circular, the nail is narrow (stenonychioid) and short, 14 to 15 millimeters long and 13 to 14 millimeters wide. The wings are provided with 13 to 14 millimeters, 9 to 10 millimeters and 4 millimeters Spreite nail, as long as or slightly shorter than the shuttle , which is of a blunt shape, approximately 14 mm long and 6 mm long with nail. The stamens are diadelphic, so united in two bundles and 14 millimeters long. The ovary contains 10 to 14 ovules , is hairy with white, adjacent hair, 5 to 6 mm long and with a 4 mm long stem provided. The stylus is 8 millimeters long and has tufts of hair at the tip and on the back of the upper half. The fruits are not known, calculations based on the dimensions of the ovary leave a length of less than 15 millimeters with a length-to-width ratio of at least 3: 1.
distribution
The species is known only from the type collection from a steppe near a road south of Karaman , south of the Sertavul Pass, where it is endemic . The only known location, a dry, south-facing slope on limestone at a height of 1080 meters, is only 200 m² in size, Astragalus friederikeanus occurs there together with Paracaryum species, Veronica multifida , Onosma isaurica and probably Onosma briquetii .
Systematics
Astragalus friederikeanus is placed in the Onobrychium section due to the trimmings of the leaflets with forked hairs . The kind is considered to be clearly different from other kinds, with none it is closely related.
Botanical history
Astragalus friederikeanus was first collected in Turkey by Jörg Zeitlinger in May 1988 and passed on to Friederike Sorger , who recognized the species as new. In 2001 Sorger died over the first description and it was not until 2007 that the first description could be completed with the help of Kit Tan . The epithet honors Friederike Sorger.
proof
- Kit Tan, Jörg Zeitlinger: Astragalus friederikeanus Kit Tan & Zeitlinger (Fabaceae), a new species from south Anatolia, Turkey. In: Wulfenia . Volume 14, 2007, pp. 133-136.