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Crepis pygmaea (commonly pygmy hawksbeard)[1] is a species of flowering plant in the genus Crepis in the family Asteraceae.
| Crepis pygmaea | |
|---|---|
 | |
Scientific classification  | |
| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Crepis |
| Species: | C. pygmaea |
| Binomial name | |
| Crepis pygmaea | |
Description
Vegetative features
The pygmy hawksbeard grows as a perennial herbaceous plant and reaches a height of 5 to 15 centimetres (2.0 to 5.9 in). The stems are arching and ascending, mostly branched, one or more heads, white tomentose or glabrous, often tinged with purple.[2] The plant has few leaves. The above-ground parts of the plant are hairy.[2]
The lower leaves are heart-shaped and usually long-stemmed. The upper leaves are irregularly pinnate with a very large end section and small side sections.[2] The underside of the leaf is often tinged with purple.
Generative traits
The flowering period extends from July to August. The cup-shaped inflorescence has a diameter of about 2 to 3 centimetres (3⁄4 to 1+1⁄4 in) and contains only ray florets. The bracts are bell-shaped, white, and 10 to 15 millimetres (3⁄8 to 5⁄8 in) long.[2] The fruits are 4 to 6 millimetres (3⁄16 to 1⁄4 in) long. The calyx is 7 to 10 millimetres (1⁄4 to 3⁄8 in) long and white.[2]
The chromosome number is 2n = 8 or 12.[3]
Occurrence
The pygmy hawksbeard occurs in the Pyrenees and the western Alps, in Spain, Andorra, France, Switzerland, and Austria.[4] The plant thrives on moist, coarse scree slopes at elevations of 1,500 to 2,900 metres (4,900 to 9,500 ft).
Further reading
- Finkenzeller, Xaver (2002). Alpenblumen. Erkennen & bestimmen (in German). München: Mosaik. ISBN 3-576-11482-3.
- Fischer, Manfred A; Adler, Wolfgang; Oswald, Karl (2005). Exkursionsflora für Österreich, Liechtenstein und Südtirol (in German). Vol. 2nd revised and expanded. Linz: Land Oberösterreich, Biologiezentrum der Oberösterreichischen Landesmuseen. ISBN 3-85474-140-5.
References
- "Crepis pygmaea L." Plantnet. Retrieved 2022-05-17.
- Crepis pygmaea L. In: Info Flora, the national database and information centre of Swiss flora.
- "Crepis pygmaea". IPCN Chromosome Reports. Missouri Botanical Garden – via Tropicos.org.
- Greuter, Werner (2006). Greuter, Werner; von Raab-Straube, E (eds.). "Crepis pygmaea". Euro+Med Plantbase.
На других языках
- [en] Crepis pygmaea
[es] Crepis pygmaea
Crepis pigmaea es una especie de la familia de las asteráceas.Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.
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