Agoseris retrorsa | |
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Scientific classification | |
Kingdom: | Plantae |
Clade: | Tracheophytes |
Clade: | Angiosperms |
Clade: | Eudicots |
Clade: | Asterids |
Order: | Asterales |
Family: | Asteraceae |
Genus: | Agoseris |
Species: | A. retrorsa |
Binomial name | |
Agoseris retrorsa | |
Synonyms [1] | |
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Agoseris retrorsa is a North American species of flowering plant in the family Asteraceae known by the common name spearleaf agoseris or spearleaf mountain dandelion. [2]
It is native to western North America from Washington to Utah to Baja California, where it grows in many types of habitat, including chaparral, scrub, and coniferous forest. [3] [4]
Agoseris retrorsa is a perennial herb forming a base of leaves about a number of erect, thick, wool-coated inflorescences up to half a meter in height. The narrow leaves are linear to lance-shaped, and spearlike with curving toothlike lobes along the edges. [2]
The inflorescence bears a single flower head which is several centimeters wide when fully open. It is lined with woolly, pointed phyllaries which are green, often with reddish purple longitudinal streaks or stripes. The flower head contains many golden yellow ray florets, the outer ones usually darker in color. [2]
The fruit is an achene with a plumelike pappus of white bristles. [2]
Luina, commonly called silverback, is a small genus of perennial shrubs in the groundsel tribe within the sunflower family.
Agoseris is a small genus of annual or perennial herbs in the family Asteraceae described as a genus in 1817.
Eriophyllum confertiflorum, commonly called golden yarrow or yellow yarrow, is a North American species of plant in the family Asteraceae, native to California and Baja California. It has wooly leaves when young, and yellow flower heads. "Eriophyllum" means "wooly leaved."
Heterotheca sessiliflora is a species of flowering plant in the family Asteraceae known by the common name sessileflower false goldenaster. It is native to California, Sonora, and Baja California.
Agoseris apargioides is a species in the family Asteraceae, is commonly called seaside agoseris or seaside false-dandelion. It is native to the Pacific coast of the United States from Washington to central California, where it grows primarily on coastal dunes.
Agoseris aurantiaca is a species of plant in the family Asteraceae, commonly called orange agoseris or mountain dandelion. It is widespread in western North America.
Agoseris glauca is a species of flowering plant in the family Asteraceae known by the common names false dandelion, pale agoseris, prairie agoseris, and short-beaked agoseris. It is native to western North America.
Agoseris grandiflora is a North American species of flowering plant in the family Asteraceae known by the common names California dandelion, bigflower agoseris, and grassland agoseris.
Antennaria media is a North American species of flowering plants in the family Asteraceae known by the common name Rocky Mountain pussytoes. It is native to western Canada and the Western United States from Alaska and Yukon Territory to California to New Mexico. It grows in cold Arctic and alpine regions, either at high latitudes in the Arctic or at high elevations in the mountains.
Antennaria suffrutescens is a species of flowering plant in the family Asteraceae known by the common names evergreen pussytoes and evergreen everlasting. It is native to southwestern Oregon and far northeastern California. It grows in coniferous forests in the mountains, sometimes on serpentine soils.
Arnica discoidea is a North American species of arnica in the sunflower family. It is known by the common name rayless arnica because its flower heads have disc florets but none of the showier ray florets. It is native to the woodlands, forests, and chaparral of the western United States (Washington, Oregon, California, and western Nevada.
Arnica spathulata is a rare North American species of flowering plant in the family Asteraceae, known by the common name Klamath arnica. It is native to the Klamath Mountains of northwestern California and southwestern Oregon. It grows in woodland habitat, almost exclusively on serpentine soils.
Crepis bakeri is a species of flowering plant in the family Asteraceae known by the common name Baker's hawksbeard. It is native to the western United States where it grows in many types of mountain and plateau habitat. It is found in Oregon, Washington, Idaho, northern California, Nevada, and Utah.
Holocarpha heermannii is a species of flowering plant in the family Asteraceae known by the common name Heermann's tarweed. It is endemic to California.
Nothocalais is a genus of North American flowering plants in the tribe Cichorieae within the family Asteraceae. There are known generally as false dandelions or false agoseris.
Agoseris heterophylla is a liguliferous species in the family Asteraceae known by the common name annual agoseris or mountain dandelion. It is widespread in mostly drier regions of western North America from British Columbia to Baja California.
Agoseris monticola is a North American species of flowering plants in the family Asteraceae known by the common name Sierra Nevada agoseris or Sierra Nevada mountain dandelion. It grows in the mountains of the western United States, primarily the Cascade Range and Sierra Nevada, but also on other mountains in Nevada and Idaho.
Agoseris hirsuta is a North American species of flowering plants in the family Asteraceae known by the common name Coast Range agoseris or woolly goat chicory. It grows only in the Coast Ranges along the Pacific coast of California, from Humboldt County to San Luis Obispo County.
Agoseris parviflora is a North American species of flowering plants in the family Asteraceae known by the common name Steppe agoseris or sagebrush agoseris or false dandelion. It is found in the Western United States primarily in the Great Basin and the region drained by the Colorado River but also in the eastern foothills of the Sierra Nevada and on the western edge of the Great Plains. Its range extends from eastern Oregon and eastern California to Wyoming, Colorado, and New Mexico, with a few isolated populations in western Kansas and western South Dakota.
Acmispon decumbens is a species of flowering plant in the family Fabaceae, native to the western United States and north-western Mexico. It was first described by George Bentham in 1836 as Hosackia decumbens.