Shepherd's purse
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Common shepherd's purse ( Capsella bursa-pastoris ) |
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Shepherd's purse ( Capsella ), also known as shepherd's purse , is a genus of plants in the cruciferous family (Brassicaceae).
description
Vegetative characteristics
The Capsella species grow as annual to biennial herbaceous plants . The above-ground parts of the plant are usually downy hairy with sitting, forked or star hairs ( trichomes ). The upright to ascending stems can be branched.
The leaves are in basal rosettes or alternately distributed on the stem.
Generative characteristics
In the beginning schirmtraubigen and to the fruit ripening by significant extension of the inflorescence axis traubigen inflorescences are few flowers together.
The hermaphroditic flowers are four-fold with a double flower envelope (perianth). There are four sepals . The four petals are usually white to pink, rarely reddish; sometimes they can be absent. There are only four nectar glands. There are (rare 12 to) usually from 20 to 40 ovules per ovary present.
The long-stalked and spreading pods are heart-shaped. The seeds standing in a row are not winged.
The basic chromosome number is n = 8.
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Systematics and distribution
The genus Capsella was established in 1821 by Friedrich Kasimir Medikus . The botanical generic name Capsella is derived from the Latin capsella for "small bag". This means the earlier bags of the shepherds, which had a similar shape to the pods.
The distribution area of the genus Capsella extends from Europe over the Mediterranean to Western Asia . Some species are almost worldwide neophytes .
The genus Capsella belongs to the tribe Camelineae DC. within the family Brassicaceae .
There are three to five Capsella typologies:
- Ordinary shepherd's purse ( Capsella bursa-pastoris (L.) Medik. ): Home is Eurasia and northern Africa; it is a neophyte almost worldwide.
- Capsella grandiflora (Fauché & Chaub.) Boiss. : The home is Albania and Greece.
- Capsella orientalis Klokov : It occurs in northwestern Xinjiang and central Russia .
- Reddish shepherd's purse ( Capsella rubella Reut. ): The home is southern and central Europe and Turkey.
- Capsella thracica Velen. : It occurs only in Bulgaria. It is mostly known as the subspecies Capsella bursa-pastoris subsp. thracica (Velen.) Stoj. & Stef. put to the common shepherd's purse.
swell
- Ihsan A. Al-Shehbaz: Capsella , p. 453 - the same text online as the printed work , In: Flora of North America Editorial Committee (Ed.): Flora of North America North of Mexico , Volume 7 - Magnoliophyta: Salicaceae to Brassicaceae , Oxford University Press, New York and Oxford 2010, ISBN 978-0-19-531822-7 .
Individual evidence
- ↑ a b c d Ihsan A. Al-Shehbaz: Capsella , p. 453 - the same text online as the printed work , In: Flora of North America Editorial Committee (Ed.): Flora of North America North of Mexico , Volume 7 - Magnoliophyta: Salicaceae to Brassicaceae , Oxford University Press, New York and Oxford 2010, ISBN 978-0-19-531822-7 .
- ↑ a b c d e f g h Database: BrassiBase, Version 1.2, March 2017 of the University of Heidelberg. ( Memento from September 16, 2017 in the Internet Archive )
- ^ A b Capsella in the Germplasm Resources Information Network (GRIN), USDA , ARS , National Genetic Resources Program. National Germplasm Resources Laboratory, Beltsville, Maryland.
- ↑ a b Karol Marhold, 2011: Brasicaceae : Datasheet Capsella In: Euro + Med Plantbase - the information resource for Euro-Mediterranean plant diversity.
