''Crepis atribarba'' is a

North America North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Car ...

n species of flowering plant in the family Asteraceae known by the common names slender hawksbeard and dark hawksbeard. It is native to western Canada and the western United States It has been found in British Columbia, Utah, Washington, Oregon, Nevada, Idaho, Alberta, Montana, Wyoming, Colorado, Saskatchewan, and Nebraska. ''Crepis atribarba'' grows in many types of mountain and plateau habitat. It is a perennial herb up to 70 cm (28 inches) tall, with a slender taproot and 1 or 2 slender stems. One plant can produce as many as 30 small

flower heads A pseudanthium (Greek for "false flower"; ) is an inflorescence that resembles a flower. The word is sometimes used for other structures that are neither a true flower nor a true inflorescence. Examples of pseudanthia include flower heads, compos ...

, each with 6–35 yellow ray florets but no disc florets.Heller, Amos Arthur 1899. Bulletin of the Torrey Botanical Club 26(6): 314–315
as ''Crepis atrabarba''

References

bakeri Flora of Western Canada Flora of the Western United States Flora of the Rocky Mountains Plants described in 1895 Taxa named by Amos Arthur Heller Flora without expected TNC conservation status {{Cichorieae-stub