John Merle Coulter

The peyote (Lophophora williamsii) is a small, spineless cactus which contains psychoactive alkaloids, particularly mescaline. Peyote is a Spanish word derived from the Nahuatl peyōtl, meaning "caterpillar cocoon", from a root peyōni, "to glisten". It is native to southern North America, primarily found in desert scrub and limestone-rich areas of northern Mexico and south Texas, particularly in the Chihuahuan Desert at elevations of 100–1,500 meters. It flowers from March to May, and sometimes as late as September. Its flowers are pink or white, with thigmotactic anthers (like Opuntia). It is

Lophophora is a genus of spineless, button-like cacti. Its native range covers Texas through Mexico to southwestern Mexico. The species are extremely slow growing, sometimes taking up to thirty years to reach flowering age (at the size of about a golf ball, excluding the root) in the wild. Cultivated specimens grow considerably faster, usually taking between three and ten years to reach from seedling to mature flowering adult. The slow rate of reproduction and over-harvesting by collectors render the species under threat in the wild.

Comptonia peregrina is a species of flowering plant in the family Myricaceae native to eastern North America. It is the only extant (living) species in the genus Comptonia, although some extinct species are placed in the genus.

Cicuta douglasii, the western water hemlock, is a very poisonous perennial plant in the family Apiaceae.

Myrrhidendron is a genus of flowering plants belonging to the family Apiaceae. Its native range is southeastern Mexico to Ecuador.

Hesperaloe parviflora, also known as red yucca, hummingbird yucca, redflower false yucca and samandoque, is a succulent plant in the Asparagaceae family (subfamily Agavoideae) that is native to the Chihuahuan and Coahuilan deserts of Northern Mexico, as well as Central, Southern and Western Texas; today, it is often seen in roadside planting swathes and public areas, or used for corporate or office exterior landscaping. It is also quite popular in collector gardens and among private gardeners who are striving for a more water-wise approach. Hesperaloe has narrow, funnel-like evergreen leaves

Donnellsmithia is a genus of flowering plants belonging to the family Apiaceae. Its native range is Mexico to western Venezuela. It is found in the countries of Colombia, Costa Rica, El Salvador, Guatemala, Honduras, Mexico, Nicaragua, Panama and Venezuela. The genus name of Donnellsmithia is in honour of John Donnell Smith (1829–1928), an American biologist and taxonomist, it was published in Bot. Gaz. Vol.15 on page 15 in 1890. Known species:

Physocarpus monogynus, the mountain ninebark or low ninebark, is a flowering shrub of western North America.

Lomatium nudicaule is a species of flowering plant in the carrot family known by the common names barestem biscuitroot, pestle lomatium, desert parsley, 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 20–45 centimetres (7.9–18 in) tall from a thick taproot. It generally lacks a stem, the inflorescence and leaves emerging from ground level. Each leaflet is 2 to 5 cm (0.8 to 2 in) long and ovoid to

Lomatium grayi, commonly known as Gray's biscuitroot, Gray's desert parsley, or pungent desert parsley, is a perennial herb of the family Apiaceae. It is native to Western Canada in British Columbia, and the Western United States, including from the Eastern Cascades and northeastern California to the Rocky Mountains. It is a perennial herb found growing in dry rocky banks and slopes. It grows throughout the sagebrush steppe and also in pinyon–juniper woodland. It has a lifespan of 5–7 years.

Dysphania atriplicifolia (synonym Cycloloma atriplicifolium) is species of flowering plant known by the common names winged pigweed, tumble ringwing, plains tumbleweed, and tumble-weed.

Coaxana is a genus of flowering plant in the family Apiaceae, native to Mexico, Guatemala and Honduras. It has two species.

Angelica hendersonii is a species of angelica known as Henderson's angelica. It is native to the west coast of the United States from Washington to central California, where it grows in the coastal sage scrub and other habitat on the immediate coastline. This is a taprooted perennial herb producing a branching erect stem to heights between about 1 and 2 meters. The basal leaves are made up of oval-shaped leaflets each up to 10 centimeters long, with toothed edges and white woolly undersides. The woolly inflorescences are compound umbels of up to 60 rays holding clusters of fuzzy flowers. The

Amaranthus crispus is a species of flowering plant in the family Amaranthaceae. It is referred to by the common name crispleaf amaranth. It is a herbaceous, sparsely pubescent annual plant. It can grow up to 0.5 m (1.5 ft) in height. It flowers in summer to fall. It usually grows in waste places, disturbed habitats, or near water. It is native to Argentina, Chile and Uruguay and has been introduced into Australia, Austria, Bulgaria, Crimea, the former Czechoslovakia, France, Hungary, Italy, Romania, Sardinia, the United States, and the former Yugoslavia.

Aletes has been regarded a genus of flowering plants in the family Apiaceae, all of which are endemic to North America. As of December 2022, Plants of the World Online regarded Aletes as a synonym of Cymopterus, while GRIN Taxonomy regarded it as a possible synonym of that genus. Species that may be placed in the genus include the following (placements in Cymopterus from Plants of the World Online): Aletes acaulis (Torr.) J.M.Coult. & Rose - stemless Indian parsley → Cymopterus hallii Aletes filifolius Mathias, Constance & W.L.Theobald - Trans-Pecos Indian parsley → Cymopterus filifolius

Sanicula arguta is a species of flowering plant in the family Apiaceae known by the common names sharptooth sanicle and sharptooth blacksnakeroot. It is native to the coastal hills and mountains of the central coast and southern California and Baja California, the San Francisco Bay Area, and the Channel Islands. It grows in many types of local habitat, including California chaparral and woodlands.

Rhysopterus is a genus of flowering plants belonging to the family Apiaceae. Its native range is Western Central USA. Species: Rhysopterus plurijugus J.M.Coult. & Rose

Lomatium foeniculaceum is a species complex of flowering plants found in North America. L. foeneculicum is a member of the taxonomic family Apiaceae, making it a close relative of plants such as celery, carrot, parsley, and fennel, as well as the herbs dill, coriander, caraway, and cumin. Common names include Desert Biscuitroot as well as Carrotleaf Desert Parsley. Biscuitroot can also be used as a common name for the genus Lomatium as a whole.

Harbouria is a monotypic genus of flowering plants belonging to the family Apiaceae. It contains just one species, Harbouria trachypleura (A.Gray) J.M.Coult. & Rose, native to the states of Colorado, New Mexico and Wyoming. The genus name of Harbouria is in honour of Jared Patterson Harbour (1831–1917), an American plant collector in the Rocky Mountains of North America. The Latin specific epithet of trachypleura is derived from two Greek words; τραχύς (trakhús) meaning 'rough' and πλευρά (pleurá), πλευρόν (pleurón) meaning 'rib, side'. It was first described in 1888.

Eryngium armatum, known by the common names coastal eryngo and prickly coyote thistle, is a species of flowering plant in the family Apiaceae. It is endemic to the coastline of northern and central California, where it grows along beaches and coastal bluffs. Many populations are in the San Francisco Bay Area.

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Angelica kingii is a species of angelica known as King's angelica. It is native to the western United States, especially the Great Basin region. This is a taprooted perennial herb varying in shape and size. It produces an erect, hollow stem to heights between 30 centimeters and two meters. The large leaves are composed of many lance-shaped leaflets each up to 12 centimeters in length. The inflorescence is a compound umbel with up to 14 long rays each holding clusters of small hairy flowers. The fruit is a pair of bodies about half a centimeter long each containing a seed.

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Melica bulbosa is a species of grass known by the common name oniongrass. The common name comes from the onionlike appearance of the corm at its root; it is not related to the onions. It is native to western North America from British Columbia to the Rocky Mountains to California. It may or may not occur as far east as Texas. Its habitat includes mountain forest and woods, open hillsides, and streambanks. This is a rhizomatous perennial grass with a cluster of white corms at the base of the stem. The plant forms a loose cluster of stems up to a meter tall. The inflorescence is a narrow or

Lomatium utriculatum is a species of flowering plant in the carrot family known by the common name common lomatium or spring gold. It is native to western North America from British Columbia to California, where it grows in many types of habitat including chaparral, and in the Sierra Nevada.

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

Lomatium dasycarpum is a species of flowering plant in the carrot family known by the common name woollyfruit desertparsley. It is native to California and Baja California, where it is widespread throughout many of the mountain ranges, including the Peninsular, Sierra Nevada, and California Coast Ranges, and in valleys.

Lomatium congdonii, known by the common names Mariposa desertparsley and Congdon's lomatium, is a species of flowering plant in the carrot family .

Lomatium caruifolium, known by the common name alkali desertparsley, is a species of flowering plant in the carrot family.