Mosbach gold buttercup
| Mosbach gold buttercup | ||||||||||||
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| Ranunculus mosbachensis | ||||||||||||
| Haas |
The Mosbach gold buttercup ( Ranunculus mosbachensis ) is a species of the buttercup family (Ranunculaceae).
Distribution and location
The species is endemic to Baden-Württemberg . Evidence from Bavaria , Hesse and Mecklenburg-Western Pomerania is uncertain and requires confirmation. It grows in sparse mixed deciduous forests and overgrown with bushes, pebbly heaps together with Helleborus foetidus , Vinca minor , Viola odorata u. a.
description
The Mosbach gold buttercup was first described by Adolf Peter Haas in 1952 . This species is a bushy growing plant with a height of approx. 20 to 35 cm. The numerous stems rise somewhat arched. There are four to six basal leaves in single plants.
The stem leaves are divided into five to seven mostly narrow lanceolate sections. The lowest sections have very long, pointed and slightly outwardly curved teeth. The uppermost are usually entire .
Particularly characteristic is the extreme heterophylly of the species, which leads from a few divided spring leaves to extremely divided and long-stalked leaf sections in the flowering period and finally ends in undivided summer leaves similar to Ranunculus cassubicus via "elephant ear-lobed" leaves in the fruiting period .
The Mosbach gold buttercup blooms in early April and produces fruit in May. Due to the warm spring of the last few years, the flowering and ripening period is often shifted significantly forward.
Systematics
Ranunculus mosbachensis belongs to the species group of the gold buttercup ( Ranunculus auricomus agg.). Apomictic reproduction has favored the emergence of a large number of closely related, similar-looking clans , mostly with relatively small areas . These have not yet been adequately researched and only a small part has been described.
etymology
The specific epithet “mosbachensis” goes back to the place of discovery and the main occurrence of the species in the area around Mosbach , the district town of the Neckar-Odenwald district in Baden-Württemberg.
literature
- AP Haas: New southern German species from the Ranunculus auricomus L. - Ber. Bayer. Bot. Ges. 29, pp. 5-12; Munich 1952.
- V. Melzheimer: Ranunculus auricomus . In: ROTHMALER, excursion flora from Germany - vascular plants, critical supplementary volume. - 11th edition: pp. 47-57; Berlin, Heidelberg 2016 (Springer Spectrum).
- Henning Haeupler , Thomas Muer: picture atlas of the fern and flowering plants of Germany (= the fern and flowering plants of Germany. Volume 2). Published by the Federal Agency for Nature Conservation. Ulmer, Stuttgart 2000, ISBN 3-8001-3364-4 .