Round-leaved cranesbill

from Wikipedia, the free encyclopedia
Round-leaved cranesbill
Round-leaved cranesbill (Geranium rotundifolium)

Round-leaved cranesbill ( Geranium rotundifolium )

Systematics
Rosids
Eurosiden II
Order : Cranesbill (geraniales)
Family : Cranesbill family (Geraniaceae)
Genre : Cranesbills ( geranium )
Type : Round-leaved cranesbill
Scientific name
Geranium rotundifolium
L.

The round-leaved cranesbill ( Geranium rotundifolium ) is a species of the cranesbill family (Geraniaceae).

description

Vegetative characteristics

The round-leaved cranesbill is an annual herbaceous plant that reaches heights or lengths of 8 to 30 centimeters. The stem is spread out, ascending or more or less erect. Overall it is soft, with red-headed and hairy glands in the upper part. The stem leaves are opposite. The leaf blades are round in outline and divided into seven to nine lobes approximately to the middle. The leaf lobes are tripod. The stipules are 1.5 to 3.5 millimeters long.

Round-leaved cranesbill ( herbarium evidence )

Generative characteristics

The flowering period extends from June to October. The flower stalks are early spreading until turned down. The hermaphrodite flowers are radially symmetrical with a double flower envelope . The hairy sepals are pointed and about 3.5 to 6 millimeters long. The light purple-colored petals are oblong-egg-shaped, undivided and with a length of about 5 to 7 millimeters, slightly longer than the sepals. The nail is bald. There are five nectaries . The whitish stamens are 2.5 millimeters long and the yellowish anthers are about 0.5 millimeters long. The scars are reddish.

The fissure has a length of about 1.6 to 1.8 centimeters with awn and stylus remnants. The fruit valves and beaks are mostly sticky-haired.

The number of chromosomes is 2n = 26.

Habitus

Occurrence

Geranium rotundifolium occurs from Western Europe across the Mediterranean (for example Morocco) to the Himalayas and Siberia . Geranium rotundifolium is a neophyte in the New World . The round-leaved cranesbill is very rare in Central Europe. In Austria the round-leaved cranesbill is very rare and endangered, while in Switzerland it can be found scattered in warmer areas.

The round-leaved cranesbill is mostly rare to very rare in Germany and is often only inconsistently carried away. Only in the Upper Rhine Plain, especially in the Rhine Palatinate, does it occur more frequently.

The round-leaved cranesbill grows in weed communities in the vineyards, on walls and on paths. It thrives best on warm, more or less dry and nutrient-rich, stony- sandy loam soils . In vineyards it is a character species of the Geranio-rotundifolii-Allietum vinealis (Association Fumario-Euphorbion), but also occurs in societies of the associations Sisymbrion, Alliarion or the class Sedo-Scleranthetea.

Taxonomy

Geranium rotundifolium was first published in 1753 by Carl von Linné in Species Plantarum , 2, p. 683. The specific epithet rotundifolium means round-leaved.

photos

  • The incisions in the leaves barely reach half the spreading radius.

  • The partial inflorescence is double-flowered.

  • The flower stalks have short glandless and somewhat longer glandular hairs.

  • The sepals have a short awn.

  • The pink-red petals are rounded or slightly cupped.

  • The fruit and its beak are 15 to 18 mm long.

  • Fissure fruit with seeds not yet ejected

  • If the split fruits are opened jerkily, the seeds are thrown away and spread out.

swell

literature

  • Langran Xu, Carlos Aedo: Geranium. : Geranium rotundifolium , p. 14 - online with the same text as the printed work , Wu Zheng-yi, Peter H. Raven, Deyuan Hong (eds.): Flora of China. Volume 11: Oxalidaceae through Aceraceae , Science Press and Missouri Botanical Garden Press, Beijing and St. Louis 2008, ISBN 978-1-930723-73-3 . (Section description)
  • Geranium rotundifolium at Tropicos.org. In: Flora of Pakistan . Missouri Botanical Garden, St. Louis
  • Henning Haeupler, Thomas Muer: picture atlas of the fern and flowering plants of Germany . Ed .: Federal Agency for Nature Conservation (=  The fern and flowering plants of Germany . Volume 2 ). Eugen Ulmer, Stuttgart (Hohenheim) 2000, ISBN 3-8001-3364-4 .
  • Wolfgang Adler, Karl Oswald, Raimund Fischer: Excursion flora of Austria . Ed .: Manfred A. Fischer. Eugen Ulmer, Stuttgart / Vienna 1994, ISBN 3-8001-3461-6 .
  • Christian Heitz: School and excursion flora for Switzerland. Taking into account the border areas. Identification book for wild growing vascular plants . Founded by August Binz. 18th completely revised and expanded edition. Schwabe & Co., Basel 1986, ISBN 3-7965-0832-4 .
  • Erich Oberdorfer : Plant-sociological excursion flora . With the collaboration of Theo Müller. 6th, revised and expanded edition. Eugen Ulmer, Stuttgart (Hohenheim) 1990, ISBN 3-8001-3454-3 .
  • Konrad von Weihe (ed.): Illustrated flora. Germany and neighboring areas. Vascular cryptogams and flowering plants . Founded by August Garcke. 23rd edition. Paul Parey, Berlin / Hamburg 1972, ISBN 3-489-68034-0 .

Individual evidence

  1. ↑ a b Erich Oberdorfer : Plant-sociological excursion flora for Germany and neighboring areas. 8th edition. Verlag Eugen Ulmer, Stuttgart 2001, ISBN 3-8001-3131-5 . Page 627.
  2. ↑ Geranium rotundifolium at Tropicos.org. Missouri Botanical Garden, St. Louis, accessed on November 28, 2015.
  3. ↑ a b c d e f g Manfred A. Fischer, Karl Oswald, Wolfgang Adler: Excursion flora for Austria, Liechtenstein and South Tyrol . 3rd, improved edition. Province of Upper Austria, Biology Center of the Upper Austrian State Museums, Linz 2008, ISBN 978-3-85474-187-9 , p. 711 .

Web links

Commons : Round-leaved cranesbill ( Geranium rotundifolium )  - album with pictures, videos and audio files