Heart-leaved comfrey
| Heart-leaved comfrey | ||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Heart-leaved comfrey ( Symphytum cordatum ) |
||||||||||||
| Systematics | ||||||||||||
|
||||||||||||
| Scientific name | ||||||||||||
| Symphytum cordatum | ||||||||||||
| Waldst. & Kit. ex Willd. |
The heart-leaved comfrey ( Symphytum cordatum ) is a species of plant in the family of the predatory plants (Boraginaceae). The distribution area extends from Slovakia via Poland and Ukraine to Romania .
description
Appearance and foliage leaf
The heart-leaved comfrey grows as a perennial herbaceous plant with heights of 15 to 35 (rarely up to 50 centimeters). The simple stem is slightly hairy with up to 1 millimeter long trichomes . The plant forms a thickened uniformly and largely on the substrate resting rhizome from.
The two to four (rarely up to five) alternate and entire leaves are long-stalked in the lower stem area with larger and heart-shaped leaf blades and short-stalked to sessile in the upper area with a round base . Stipules are absent.
Inflorescence, flower and fruit
Up to twenty flowers stand together in a terminal, zymous inflorescence without bracts .
The hermaphroditic flowers are radial symmetry and five-fold with a double flower envelope . The five sepals are only briefly fused and form the deeply toothed calyx. The five light yellow petals are tubular to bell-shaped to form a 13 to 18 millimeter long crown, which is about one and a half times as long as the calyx. In the corolla tube there are five triangular-lanceolate appendages, the so-called "crown scales". They have evenly distributed papillary glands at the edge , which are two and a half to three and a half times as long as they are wide in the lower area, and smaller and significantly longer than wide in the upper area. There is only one circle with five stamens that are fused with the corolla tube and do not protrude beyond the crown. The stamens are a little more than half to three quarters longer than the anthers. Two carpels are a top permanent ovary deformed, of the four seed chambers, each with a ovule contains. The thin stylus ends in a cephalic scar .
There are Klaus fruits formed. The four partial fruits are slightly warty and more or less reticulate-wrinkled.
Chromosome number
The number of chromosomes is 2n = 18, 24.40, 48, 56, 72 or 120.
Occurrence
Heart-leaved comfrey is widespread along the Carpathian Arch from Slovakia via Poland, Ukraine to Romania. Habitat are deciduous deciduous forests .
Taxonomy
Symphytum cordatum was of 1799-1802 Franz Adam of Wallenstein and Pál Kitaibel in Descriptiones et Icones Plantarum Rariorum Hungariae , Volume 1, page 6, Table 7 first described . Further publications were made in 1799 by Carl Ludwig von Willdenow in Neue Schriften Gesellschaft Naturforschender Freunde zu Berlin , Volume 2, page 121 and 1808 by Friedrich August Marschall von Bieberstein in Flora Taurico-Caucasica exhibens stirpes phaenogamas: in Chersoneso Taurica et regionibus caucasicis sponte crescentes , volume 1, page 130.
swell
literature
- Bogumil Pawłowski: Symphytum. In: TG Tutin, VH Heywood, NA Burges, DM Moore, DH Valentine, SM Walters, DA Webb (eds.): Flora Europaea . Volume 3: Diapensiaceae to Myoporaceae . Cambridge University Press, Cambridge 1972, ISBN 0-521-08489-X , pp. 103-104 (English, limited preview in Google Book Search - key to Symphytum and description of Symphytum cordatum , from the unmodified reprint from 2010 [ ISBN 978-0-521-15368-3 ]).
Individual evidence
- ↑ a b Benito Valdés, 2011: Boraginaceae. : Data sheet Symphytum cordatum In: Euro + Med Plantbase - the information resource for Euro-Mediterranean plant diversity.
- ^ Symphytum cordatum at Tropicos.org. In: IPCN Chromosome Reports . Missouri Botanical Garden, St. Louis
- ^ Franz de Paula Adam von Waldstein, Pál (Paul) Kitaibel: Descriptiones et Icones Plantarum Rariorum Hungariae . tape 1 . Schmidt, Vienna 1802, OCLC 216077355 , p. 6 ( bibdigital.rjb.csic.es - digitized version at Biblioteca Digital / Real Jardín Botánico, CSIC, Madrid).
- ^ Ludwig Willdenow: Contributions to the closer knowledge of some rare, little-known plants . In: Neue Schriften, Gesellschaft Naturforschender Freunde zu Berlin . tape 2 , 1799, pp. 121 ( ub.uni-bielefeld.de - digitization in the retrospective digitization project of academic review organs and literary magazines of the 18th and 19th centuries from the German-speaking area of Bielefeld University).
- ^ Friedrich August Marschall von Bieberstein: Flora Taurico-Caucasica exhibens stirpes phaenogamas: in Chersoneso Taurica et regionibus caucasicis sponte crescentes . 1808 ( limited preview in Google Book Search).
Web links
- Symphytum cordatum. In: Nature Digital Object Repository. mybiosis.info, accessed on January 16, 2012 (English, distributionmapRomania and photo gallery).