Crepis runcinata explained

Crepis runcinata is a North American species of flowering plant in the family Asteraceae known by the common name fiddleleaf hawksbeard. It is native to western and central Canada (from British Columbia to Manitoba), the western and central United States (from the Pacific as far east as Minnesota, Iowa, western Kansas and northwestern Texas) and northern Mexico (Chihuahua).^[1]

Crepis runcinata grows in many types of habitats. It is a variable species with many subspecies. In general it is a perennial herb growing an erect, hairless, mostly leafless, unbranching stem up to about 80 centimeters (32 inches) tall from a taproot. The hairless leaves are arranged about the base of the plant in a rosette, each somewhat narrowly oval with many toothlike triangular lobes or sometimes lacking lobes. The inflorescence produces flower heads with hairy, glandular phyllaries and many yellow ray florets but no disc florets. The fruit is a small achene with a pappus.^{[2] [3]}

Subspecies^[2]

• Crepis runcinata subsp. andersonii (A.Gray) Babc. & Stebbins – California, Nevada
• Crepis runcinata subsp. barberi (Greenm.) Babc. & Stebbins – Arizona, Nevada, New Mexico, Chihuahua.
• Crepis runcinata subsp. glauca (Nutt.) Babc. & Stebbins – Alberta, Manitoba, Saskatchewan; Arizona, Colorado, Idaho, Montana, North Dakota, Nevada, New Mexico, North Dakota, South Dakota, Texas, Utah, Wyoming
• Crepis runcinata subsp. hallii Babc. & Stebbins – California, Nevada
• Crepis runcinata subsp. hispidulosa (Howell ex Howell) Babc. & Stebbins – Alberta, Saskatchewan; Colorado, Idaho, Montana, North Dakota, Oregon, Utah, Washington, Wyoming
• Crepis runcinata subsp. imbricata Babc. & Stebbins – Nevada, Oregon
• Crepis runcinata subsp. runcinata – Alberta, British Columbia, Manitoba, Saskatchewan; Colorado, Idaho, Minnesota, Montana, Nebraska, Nevada, New Mexico, North Dakota, Oregon, South Dakota, Utah, Washington, Wyoming

External links

• Jepson Manual Treatment
• United States Department of Agriculture Plants Profile
• Calphotos Photo gallery, University of California: ssp. hallii

Notes and References

1. http://bonap.net/MapGallery/County/Crepis%20runcinata.png Biota of North America Program 2014 county distribution map
2. http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=250066454 Flora of North America, Crepis runcinata (E. James) Torrey & A. Gray, Fl. N. Amer. 2: 487. 1843.
3. https://www.biodiversitylibrary.org/page/372022#page/239/mode/1up Wooton, Elmer Ottis & Paul Carpenter Standley. 1913. Contributions from the United States National Herbarium 16(4): 176