Snow lady's mantle
| Snow lady's mantle | ||||||||||||
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Snow Lady's Mantle ( Alchemilla pentaphyllea ), illustration |
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| Scientific name of the section | ||||||||||||
| Pentaphylleae | ||||||||||||
| Buser ex Camus | ||||||||||||
| Scientific name of the species | ||||||||||||
| Alchemilla pentaphyllea | ||||||||||||
| L. |
The snow lady's mantle ( Alchemilla pentaphyllea ), also five-leaf lady's mantle or snow valley lady's mantle, is an alpine plant species of the snow valley vegetation. It is the only recent species of the Pentaphylleae section of the genus Lady's mantle ( Alchemilla ).
features
The snow lady 's mantle is a small carpet or trellis shrub that can also be herbaceous. It reaches heights of growth of five to seven (rarely three to ten) centimeters. The whole plant is soft, slightly wavy and hairless. It can rarely be hairy, sparsely stiff. The internodes of the seedlings are at most half a millimeter long. The main axis is three to four millimeters thick, grows upright and only shows secondary growth for a maximum of three years . The internodes are a quarter to a half millimeter long. All parts of the axis have a strongly developed cortical parenchyma . Rows of innovation going out from the main axis are not formed.
The cotyledons are short stalked and circular. The primary leaf has three very deep leaf lobes, is two to four times as long as it is wide. The spreading of the basal leaves are divided into a foot shape with five (rarely three to seven) sections. They are one to four, rarely up to six centimeters wide, kidney to circular and cover 235 to 360 ° (rarely up to 450 °). They are translucent, dull, light blue-green on the upper side of the leaf. The blade is wrinkled and / or wavy, from a funnel shape to flat. The nerve network is wide-meshed, the adjoining nerves are often forked. The individual leaflets of the blade are oblong-wedge-shaped to wedge-rounded. They are almost as long to twice as long as they are wide, encompass 45 to 90 ° and have three to eleven teeth. Sometimes they are double-toothed or serrated and lobed. 40 to 80% of the length is entire. The teeth are three to six (rarely 13) millimeters long, lanceolate to linear. They are mostly blunt and separated by equally blunt bays. The leaf blades are hairless, at most the summer leaves are sparsely to loosely hairy.
The inflorescence axes are two to 15 centimeters long, rarely up to 20, while prostrate with an upright tip. The inflorescence is arm- flowered and consists of five to 30 flowers . These are green to yellow-green and are 2.5 to four millimeters wide and four to five millimeters long. The goblet is reddish brown overflowing. The sepals stand upright at the end. The outer sepals are narrower than the sepals. The bulge of the disc is at least as wide as its opening. Flowering time is July and August. A maximum of one third of the nuts protrude from the fruit cup.
The number of chromosomes is 2n = 64 or 96–102.
According to S. Fröhner, statements about sexual reproduction are "very doubtful".
Distribution and locations
The species occurs in the Alps, with the main focus in the western Alps. The eastern border is in Vorarlberg ( Rätikon ) and in the west of South Tyrol . Information about an occurrence in Carinthia is based on old, anonymous evidence and is doubtful.
The snow lady's mantle grows mainly in snow valleys. It is an association character species of the Salicetum herbaceae . It can also be found in damp rock gravel and in alluvions. It prefers humus, moist and lime poor soils. It occurs mainly in the alpine, but also from the subalpine to the nival altitude level . It rises over 2200 m, in Valais up to 3200 m above sea level.
Systematics
The Pentaphylleae section is one of the four basic sections of the Eurasian alchemil. This section is involved in at least 50, possibly up to 100 of the hybridogenic Alchemilla species. The characteristics of the section are the same as those of the species Alchemilla pentaphyllea . In addition, however, there is a hook-shaped scar, which may have come from extinct members of the section, as it occurs in many species with Pentaphylleae influence , but not in A. pentaphyllea .
The only recent species of the section is the snow lady's mantle ( Alchemilla pentaphyllea ).
supporting documents
Unless specified under individual evidence, the article is based on the following documents:
- Sigurd Fröhner: Alchemilla . In: Hans. J. Conert et al. a. (Ed.): Gustav Hegi. Illustrated flora of Central Europe. Volume 4 Part 2B: Spermatophyta: Angiospermae: Dicotyledones 2 (3). Rosaceae 2 . Blackwell 1995, p. 236ff. ISBN 3-8263-2533-8
- Siegmund Seybold (Ed.): Schmeil-Fitschen interactive (CD-Rom), Quelle & Meyer, Wiebelsheim 2001/2002, ISBN 3-494-01327-6
Individual evidence
- ^ Erich Oberdorfer : Plant-sociological excursion flora for Germany and neighboring areas . 8th edition. Verlag Eugen Ulmer, Stuttgart 2001, ISBN 3-8001-3131-5 . Page 556.
- ^ A b Manfred A. Fischer , Karl Oswald, Wolfgang Adler: Excursion flora for Austria, Liechtenstein and South Tyrol. 3rd, improved edition. State of Upper Austria, Biology Center of the Upper Austrian State Museums, Linz 2008, ISBN 978-3-85474-187-9 , p. 491.
Web links
- Alchemilla pentaphyllea L. In: Info Flora , the national data and information center for Swiss flora . Retrieved November 8, 2015.