An inflorescence is a group or cluster of flowers arranged on a stem that is composed of a main branch or a complicated arrangement of branches. Morphologically, it is the modified part of the shoot of seed plants where flowers are formed on the axis of a plant. The modifications can involve the length and the nature of the internodes and the phyllotaxis, as well as variations in the proportions, compressions, swellings, adnations, connations and reduction of main and secondary axes. One can also define an inflorescence as the reproductive portion of a plant that bears a cluster of flowers in a specific pattern.
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 roseanum, adobe parsley, also known as adobe lomatium and rose-flowered desert-parsley, is a very rare plant of the Western U.S., known only from northwestern Nevada and southeastern Oregon, and which may also occur in northeastern California. The largest populations occur on the Sheldon National Wildlife Refuge. It is a member of the celery family, the Umbelliferae, and has yellow flowers.
Allium nevadense is a species of wild onion known by the common name Nevada onion. It is native to the western United States where it grows in sand and rocky soil at elevations of 1400–1700 m. The species is widespread in Utah, Nevada and southern Idaho, and has been reported also from southeastern California, northwestern Arizona, western and central Colorado and eastern Oregon.
Anemone drummondii is a species of flowering plant in the buttercup family Ranunculaceae, known by the common name Drummond's anemone. It is native to mountains in western North America.
Cymopterus aboriginum is a species of flowering plant in the carrot family known by the common name Indian springparsley.
Cymopterus gilmanii is a species of flowering plant in the carrot family known by the common name Gilman's springparsley.
Cymopterus globosus is a species of flowering plant in the carrot family known by the common name globe springparsley. This plant is native to the sandy flats extending between eastern California and Utah in the western United States. It is a low, stemless plant with leaves parallel to or lying flat on the ground. The green-gray parsley-shaped leaves are divided into several leaflets, which are further divided into neatly pointed segments. One or more tall purple or red-brown peduncles hold an inflorescence which is a spherical umbel densely packed with white or pinkish-purple flowers. They may be held in pairs atop the peduncle, and are often heavy enough to bend the peduncle to the ground.
Androsace occidentalis is a species of flowering plant in the primrose family known by the common name western rockjasmine.
Baileya pleniradiata is a North American species of flowering plant in the daisy family, known by the common name woolly desert marigold. It is native to desert regions of the southwestern United States and northern Mexico, where it grows in sandy habitats. It has been found in the States of Chihuahua, Sonora, Baja California, Arizona, Utah, and Nevada.
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.
Lomatium mohavense is a species of flowering plant in the carrot family known by the common name Mojave desertparsley. It is native to southern California with a few outlying populations in Arizona, Nevada and Baja California. It is found in several types of mountain and desert habitat, including chaparral, woodland, and scrub, mostly from 2,000–7,000 feet (600–2,100 m) elevation.
Lomatium ravenii is a species of flowering plant in the carrot family known by the common names Lassen parsley and Raven's lomatium. It is native to the Great Basin of the United States, where it grows in sagebrush and other plateau habitat, including areas with somewhat alkaline soils in Nevada, California, and other states.
Lomatium shevockii is a rare species of flowering plant in the carrot family known by the common name Owens Peak desertparsley, or Owens Peak lomatium. It is endemic to Kern County, California, where it is known from only two occurrences at Owens Peak, one of the highest points of the Sierra Nevada. It is a plant of the talus and wooded slopes of the high mountains. This species was discovered in 1984 and first described to science in 1988.
Orogenia fusiformis is a species of flowering plants in the carrot family known by the common name California Indian potato. It is native to the western United States from California to Montana, where it grows in high mountains in rocky, gravelly habitat.
Podistera nevadensis is an uncommon species of flowering plant in the carrot family known by the common names Sierra podistera and Nevada podistera.
Sphenosciadium is a monotypic genus of flowering plants in the family Apiaceae containing the single species Sphenosciadium capitellatum, which is known by the common names woollyhead parsnip, ranger's buttons, button parsley, and swamp white heads.
Asclepias hirtella, commonly called the tall green milkweed, is a species of flowering plant in the milkweed genus and dogbane family (Apocynaceae). It is native to Canada and the United States, where its range is concentrated in the Midwest and Upper South.
Asclepias stenophylla is a species of flowering plant in the dogbane family (Apocynaceae) commonly called slimleaf milkweed and narrow-leaved green milkweed.
Asclepias perennis, also known as aquatic milkweed or white swamp milkweed, is a North American species of milkweed that is found throughout the Coastal Plain from eastern Texas to southern South Carolina, northward along the Mississippi River, and into the Ohio Valley of Illinois, Indiana, and Kentucky. There seems to be a few disjunct populations in Arkansas, Texas, and Indiana.
