Coreopsis calliopsidea is a species of flowering plant in the daisy family known by the common name leafstem tickseed. It is endemic to California. The plant grows in some of the southern coastal mountain ranges and Transverse Ranges and the Mojave Desert from Alameda and Inyo Counties south to Riverside County.
Layia is a genus of flowering plants in the family Asteraceae known generally as tidy tips, native to western North America. Several are California endemics.
Layia carnosa is a species of flowering plant in the family Asteraceae known by the common name beach tidytips, or beach layia. It is endemic to California, where it lives in beach habitat. It is known from several areas of mostly fragmented coastal habitat, and it was listed as an endangered species in California. On March 31, 2022, the category was changed from endangered species to threatened species by the US Department of the Interior Fish and Wildlife Service.
Layia chrysanthemoides is a species of flowering plant in the family Asteraceae known by the common name smooth tidytips, or smooth layia.
Layia discoidea is a rare species of flowering plant in the family Asteraceae known by the common name rayless tidytips, or rayless layia.
Layia fremontii is a species of flowering plant in the family Asteraceae known by the common name Frémont's tidytips. Both its common name, and its specific epithet are derived from John C. Frémont.
Layia gaillardioides is a species of flowering plant in the family Asteraceae known by the common name woodland tidytips.
Layia glandulosa is a species of flowering plant in the family Asteraceae known by the common names whitedaisy tidytips and white layia. It is native to western North America south from central Washington (state) to Baja California and east to Utah and Arizona, where it is common in a number of habitat types.
Layia heterotricha is a species of flowering plant in the family Asteraceae known by the common name pale yellow tidytips, or pale yellow layia.
Layia hieracioides is a species of flowering plant in the family Asteraceae known by the common name tall tidytips, or tall layia.
Layia jonesii is a species of flowering plant in the family Asteraceae known by the common name Jones' tidytips, or Jones' layia.
Layia leucopappa is a rare species of flowering plant in the family Asteraceae known by the common name Comanche Point tidytips, or Comanche Point layia.
Layia munzii is a rare species of flowering plant in the family Asteraceae known by the common name Munz's tidytips, or Munz's layia.
Layia pentachaeta is a species of flowering plant in the family Asteraceae known by the common name Sierra tidytips, or Sierra layia.
Erigeron austiniae is a species of flowering plant in the family Asteraceae known by the common name sagebrush fleabane. It is sometimes considered a variety of Erigeron chrysopsidis. It is native to the western United States from northeastern California to southwestern Idaho, where it grows in the sagebrush and juniper woodlands. It is a small, clumping perennial herb producing a hairy stem up to about 12 centimeters tall from a woody caudex and taproot surrounded by narrow linear to somewhat oval leaves up to 8 centimeters long. The inflorescence is a solitary flat-topped woolly flower head containing many yellow disc florets. There occasionally appears a yellow ray floret, but they are usually absent. The fruit is an achene with a pappus of bristles.
Lessingia tenuis is a species of flowering plant in the family Asteraceae known by the common name spring lessingia. It is endemic to California, where it is known from the San Francisco Bay Area to Ventura County. It grows on the slopes of the California Coast Ranges in common local habitat such as chaparral.
Harmonia hallii is a species of flowering plant in the family Asteraceae known by the common names Hall's harmonia and Hall's madia.
Pyrrocoma carthamoides is a species of flowering plant in the family Asteraceae known by the common name largeflower goldenweed. It is native to western North America from British Columbia to northeastern California to Wyoming, where it is known from grassland, woodlands, forests, barren areas, and other habitat. It is a perennial herb growing from a taproot and producing one or more stems to about half a meter in maximum length, the stems reddish-green and leafy. The largest leaves are at the base of the stem, measuring up to 20 centimeters long, lance-shaped with spiny sawtoothed edges. Leaves higher on the stem are smaller and hairier. The inflorescence is a single flower head or a cluster of up to four. Each bell-shaped head is lined with phyllaries each up to 2 centimeters long. It has many yellow disc florets surrounded by a fringe of yellow ray florets up to 7 millimeters long; ray florets are occasionally absent. The fruit is an achene which may be well over a centimeter in length including its pappus.
Verbesina dissita is a rare species of flowering plant in the aster family known by the common name bigleaf crownbeard. It is native to northern Baja California in Mexico, where it is known from about 23 occurrences, although some of these may have been extirpated or are vulnerable to destruction. It is also known from a 3.2-kilometer section of the coastline near Laguna Beach in southern California, where it is susceptible to extirpation in a highly developed section of valuable oceanfront land. Other threats include erosion and competitive introduced species of plants. This is a federally listed threatened species of the United States.
Perityle saxicola is a rare species of flowering plant in the aster family known by the common names Roosevelt Dam rockdaisy and Fish Creek rockdaisy. It is endemic to Arizona in the United States, where it occurs in Tonto National Monument near the Roosevelt Dam.
