''Lomatium triternatum'' is a species of flowering plant in the carrot family known by the common name nineleaf biscuitroot. It is native to western North America from

British Columbia British Columbia (commonly abbreviated as BC) is the westernmost province of Canada, situated between the Pacific Ocean and the Rocky Mountains. It has a diverse geography, with rugged landscapes that include rocky coastlines, sandy beaches, ...

California California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ...

Colorado Colorado (, other variants) is a state in the Mountain West subregion of the Western United States. It encompasses most of the Southern Rocky Mountains, as well as the northeastern portion of the Colorado Plateau and the western edge of t ...

, where it grows in many types of habitat. It is a hairy perennial herb growing up to a meter tall from a

taproot A taproot is a large, central, and dominant root from which other roots sprout laterally. Typically a taproot is somewhat straight and very thick, is tapering in shape, and grows directly downward. In some plants, such as the carrot, the taproo ...

. The leaves emerge from the lower part of the stem. Each is generally divided into three leaflets which are each subdivided into three linear leaflike segments. The inflorescence is an

umbel In botany, an umbel is an inflorescence that consists of a number of short flower stalks (called pedicels) that spread from a common point, somewhat like umbrella ribs. The word was coined in botanical usage in the 1590s, from Latin ''umbella'' "p ...

of yellow flowers, each cluster on a ray up to 10 centimeters long, altogether forming a flat formation of umbels. Lomatium_triternatum_9520

References

External links

Calflora Database: ''Lomatium triternatum'' (Lewis's lomatium, Nineleaf biscuitroot)Jepson Manual eFlora treatment of ''Lomatium triternatum''USDA Plants Profile for ''Lomatium triternatum'' (nineleaf biscuitroot)UC CalPhotos gallery of ''v''
triternatum Flora of the Northwestern United States Flora of Western Canada Flora of California Flora of Nevada Flora of Utah Flora of the Cascade Range Flora of the Great Basin Flora of the Rocky Mountains Taxa named by John Merle Coulter Flora without expected TNC conservation status {{Apiaceae-stub