Asperula rupicola
| Asperula rupicola | ||||||||||||
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Overhanging Asperula rupicola |
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| Scientific name | ||||||||||||
| Asperula rupicola | ||||||||||||
| Jord. |
Asperula rupicola is a species ofthe red family (Rubiaceae). It is referred to by the common German name "Piemonteser Meister".
description
Appearance and leaf
Asperula rupicola is a perennial , herbaceous plant with heights of 10 to 15 (rarely 5 to 20) centimeters. It forms more or less extensive lawns and tap roots .
The young, non-flowering plants are green or bluish-green. The weak, square and more or less bare stems are not lignified. The lower area of the stem has short leaf spacings, while the internodes of the central area are shorter or only slightly longer than the simple , opposite leaves . The basal, ovate to obovate leaf blades stand together in dense clusters. The more or less bare leaf blades of the stem leaves are linear with a length of 20 to 30 millimeters and a width of 1 to 1.5 millimeters with a slightly pointed upper end hyaline . The leaf margin is rolled down. A midrib does not extend up to three quarters of the leaf blade.
Inflorescence, flower and fruit
The umbrella-shaped, loose inflorescences are formed from more or less head-shaped partial inflorescences . The free bracts are usually broadly lanceolate in shape.
The hermaphroditic flowers are radial symmetry and four-fold. The calyx is absent or reduced. The saucer-shaped to narrowly funnel-shaped, on the outside rough papillae , 4 to 5 millimeters long crown is formed by four pink petals. The corolla tube is about one and a half to twice as long as the four corolla lobes. There is only a circle with four stamens that do not protrude above the corolla. Two carpels have become an under-earth, two-chambered, egg-shaped and papillary ovary grown. Each ovary chamber contains only one ovule . The stylus is divided into two parts and the scar does not protrude beyond the crown.
Asperula rupicola forms dry, egg-shaped, coarse papillae and about 2 millimeters large disintegrated fruits , which split into two partial fruits when ripe.
Distribution and occurrence
Asperula rupicola inhabits the subalpine vegetation level of the southwestern Alps in France and Italy .
Systematics
Asperula rupicola was in 1852 by Claude Thomas Alexis Jordan in Pugillus Plantarum Novarum Africae Australis Borealis Hispaniaeque , page 76, first described . Asperula rupicola is listed in the section Cynanchicae within the genus Asperula . It is assumed that it could be related to species from disjoint subalpine zones, namely Asperula beckiana , Asperula neglecta , Asperula neilreichii and Asperula pyrenaica and is placed in the " Asperula pyrenaica group".
swell
literature
- Friedrich Ehrendorfer , Franz Krendl: Asperula. In: TG Tutin, VH Heywood, NA Burges, DM Moore, DH Valentine, SM Walters, DA Webb (eds.): Flora Europaea . Volume 4: Plantaginaceae to Compositae (and Rubiaceae) . Cambridge University Press, Cambridge 1976, ISBN 0-521-08717-1 (English, genus Asperula including key, section Cynanchicae (pp. 4-6), Asperula pyrenaica group and Asperula rupicola itself (p. 9), from the unchanged Reprint from 2010 ( ISBN 978-0-521-15369-0 )).
Individual evidence
- ↑ Michael Hassler and Bernd Schmitt: Asperula rupicola Jord. (Piedmontese master). In: Flora of the Alps. Michael Hassler in collaboration with the Botanical Garden of the University of Karlsruhe, accessed on December 11, 2011 .
