Lomatium is a genus of about 75 species of perennial herbs native to western North America; its common names include biscuitroot, Indian parsley, and desert parsley. It is in the family Apiaceae and therefore related to many familiar edible species such as carrots and celery; some Lomatium species are extensively used by Native Americans in the inland Northwest as a staple food.
Lomatium macrocarpum is a perennial flowering plant in the carrot family known by the common names bigseed lomatium, biscuit root or bigseed biscuitroot. It is native to much of western North America, where it can be found in various types of habitat, including the grasslands of the Great Plains, and particularly in rocky areas. It is a spreading or erect perennial herb growing up to about half a meter long with hairy, gray-green herbage. The grayish basal leaves are up to about 24 centimetres (9.4 in) long and are intricately divided into many small, narrow segments. The inflorescence bears an umbel of yellowish, greenish, purplish, or white flowers, growing from a lateral stem. The fruit is a compressed, winged, round or oval disc up to about 2 cm long.
Lomatium nudicaule is a species of flowering plant in the carrot family known by the common names pestle lomatium, barestem biscuitroot, Indian celery and Indian consumption plant. It is native to western North America from British Columbia to California to Utah, where it is known from several habitat types, including forest and woodland. It is a perennial herb growing up to about 70 centimetres (28 in) tall from a thick taproot. It generally lacks a stem, the inflorescence and leaves emerging from ground level. The leaves are made up of many dull green, waxy lance-shaped leaflets each up to 9 cm long. The inflorescence is borne on a stout, leafless peduncle widening at the top where it blooms in an umbel of yellow or purplish flowers.
Lomatium canbyi is a species of flowering plant in the carrot family known by the common name Canby's biscuitroot. It is native to the Pacific Northwest of the United States and northeast California, where it grows in sagebrush-covered plateau habitat and barren flats.
Lomatium congdonii, known by the common names Mariposa desertparsley and Congdon's lomatium, is a species of flowering plant in the carrot family.
Lomatium foeniculaceum is a species of flowering plant in the carrot family known by the common name desert biscuitroot. It is native to much of western and central North America, where it grows in many types of habitat.
Lomatium caruifolium, known by the common name alkali desertparsley, is a species of flowering plant in the carrot family.
Lomatium ciliolatum is a species of flowering plant in the carrot family known by the common name Yolla Bolly biscuitroot. It is endemic to California, where it is known from the mountain ranges adjacent to the north and south of the San Francisco Bay Area, at 300–600 feet, 1200–2100 m. It is often a member of the serpentine soils flora in woodland and chaparral habitat.
Lomatium engelmannii is an uncommon species of flowering plant in the carrot family known by the common name Engelmann's desertparsley, or Engelmann's lomatium. It is native to the Klamath Mountains of southern Oregon and northern California, where it is a member of the local serpentine soils flora.
Lomatium howellii is an uncommon species of flowering plant in the carrot family known by the common name Howell's biscuitroot, or Howell's lomatium. It is native to the Klamath Mountains of southern Oregon and northern California, where it is a member of the local serpentine soils flora.
Lomatium marginatum is a species of flowering plant in the carrot family known by the common name butte desertparsley. It is endemic to California, where it is known from mountains, valley, and grassland habitat, including serpentine, in the northern half of the state. It is a perennial herb growing up to about half a meter tall from a small taproot. There is no stem, and the leaves and inflorescence emerge from ground level. The purple-green leaves may approach 30 centimeters long, their blades divided into many long, narrow segments. The short but wide inflorescence bears an umbel of yellowish, purplish, or reddish flowers. The Lomatium marginatum is not currently an endangered species.
Lomatium nevadense is a species of flowering plant in the carrot family known by the common name Nevada biscuitroot. It is native to the western United States and northern Mexico, where it is known from several different habitat types, including sagebrush and woodlands. It is a perennial herb growing up to about 45 centimeters tall from a taproot. The leaves are up to about 16 centimeters long, their blades divided into many oblong pointed segments. The inflorescence is an umbel of white or cream flowers.
Lomatium parvifolium is an uncommon species of flowering plant in the carrot family known by the common names coastal biscuitroot and small-leaved lomatium. It is endemic to California, where it is known only from the Central Coast and central California Coast Ranges. It grows in pine forests and other habitat on serpentine soils.
Lomatium piperi is a species of flowering plant in the carrot family known by the common name salt-and-pepper or Indian biscuitroot. It is native to the Northwestern United States and northern California, where it grows in sagebrush and plateau habitat, and the Sierra Nevada and Cascade Mountains.
Lomatium repostum is an uncommon species of flowering plant in the carrot family known by the common name Napa biscuitroot, or Napa lomatium. It is endemic to California, where it is known only from the northrthern California Coast Ranges surrounding the northern San Francisco Bay Area. It often grows in plant communities on serpentine soils.
Lomatium stebbinsii, known by the common name Stebbins' desertparsley, is a rare species of flowering plant in the carrot family.
Lomatium torreyi is a species of flowering plant in the carrot family known by the common name Sierra biscuitroot. It is endemic to the Sierra Nevada of California, where it grows in the forests of the high mountains.
Lomatium cookii is a rare species of flowering plant in the carrot family known by the common names Cook's lomatium and agate desertparsley. It is endemic to Oregon in the United States, where it grows in only two valleys. It is a federally listed endangered species.
Lomatium erythrocarpum, known by the common name redfruit desertparsley, is a rare species of flowering plant in the carrot family. It is endemic to Oregon in the United States, where it is limited to a section of the Blue Mountains within Baker County.
Lomatium ochocense is a rare species of flowering plant in the carrot family known by the common name Ochoco lomatium. It is endemic to Oregon, where it is limited to the Ochoco Mountains of Crook County.
