Crepis modocensis is a species of flowering plant in the family Asteraceae known by the common name Modoc hawksbeard.
| Crepis modocensis | |
|---|---|
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| Crepis modocensis in Wenas Wildlife Area | |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Crepis |
| Species: | C. modocensis
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| Binomial name | |
| Crepis modocensis | |
| Synonyms[1] | |
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It is native to western North America (British Columbia, Washington, Oregon, California, Nevada, Utah, Idaho, Montana, Wyoming, Colorado), where it grows in several types of mountain and plateau habitat, including sagebrush.[2][3] It typically prefers rocky soil.[4]
The species name is from the Modoc Plateau, in the northeast California range.
Description
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Crepis modocensis is a perennial herb growing an erect stem up to 45 centimeters (18 inches) tall and often lined with long bristles. The woolly and sometimes bristly leaves are dark-veined and edged with blunt and sharp lobes. The longest leaves at the base of the plant reach about 25 centimeters (10 inches) long.
The inflorescence bears one to ten flower heads about 5 cm (2 in) in diameter[4] with rough or bristly phyllaries and up to 60 yellow ray florets but no disc florets.
The fruit is an achene around a centimeter long which is black, sometimes green or red tinted, and sports a tufty white pappus.[5]
- Crepis modocensis subsp. glareosa (Piper) Babc. & Stebbins – Kittitas County in Washington
- Crepis modocensis subsp. modocensis – most of species range
- Crepis modocensis subsp. rostrata (Coville) Babc. & Stebbins – British Columbia, Washington
- Crepis modocensis subsp. subacaulis (Kellogg) Babc. & Stebbins – California, Montana, Nevada, Oregon
C. modocensis may have hybridized with Crepis atribarba to produce Crepis barbigera, the head size of which is intermediate between its prospective parent species.[4]
References
edit- ^ a b The Plant List, Crepis modocensis Greene
- ^ Biota of North America Program 2014 county distribution map
- ^ Calflora taxon report, University of California, Crepis modocensis E. Greene, Modoc hawksbeard
- ^ a b c Taylor, Ronald J. (1994) [1992]. Sagebrush Country: A Wildflower Sanctuary (rev. ed.). Missoula, MT: Mountain Press Pub. Co. p. 162. ISBN 0-87842-280-3. OCLC 25708726.
- ^ a b Flora of North America, Crepis modocensis
External links
edit- Calflora Database: Crepis modocensis (Modoc hawksbeard)
- Jepson Manual eFlora (TJM2) treatment of Crepis modocensis
- USDA Plants Profile for Crepis modocensis (Modoc hawksbeard)
- UC CalPhotos gallery of Crepis modocensis
Media related to Crepis modocensis at Wikimedia Commons
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