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Pentachaeta bellidiflora
Also called White Ray Pentachaeta, White Rayed Pentachaeta
Pentachaeta bellidiflora, the white-rayed pentachaeta or whiteray pygmydaisy, is a Californian wildflower in the genus Pentachaeta of the family Asteraceae. It is included in both the state and federal lists of endangered species.
It is endemic to the San Francisco Bay Area of California, United States, and occurs only at altitudes less than 620 metres (2,034 ft). P. bellidiflora is found chiefly on rocky, grassy areas. The conservation status of this species was, as of 1999, characterized by a declining population, with a severely diminished and fragmented range. The specific bellidiflora refers to the similarity of the flowers with those of common daisies (Bellis).
White-rayed pentachaeta is found in serpentine grassland as well as valley and foothill grassland. It is currently known only to survive in serpentine bunchgrass communities and native prairies in two small areas of San Mateo County, including populations in Edgewood County Park and on San Francisco Water District lands at serpentine outcrops on the eastern slopes of Crystal Springs Reservoir, in the vicinity of State Route 92. It was formerly known to occur from Marin to Santa Cruz counties. One study declares only one population remains. Prior range is defined by the following USGS maps: Soquel (387B)* 3612188, Santa Cruz (387E) 3612281, Castle Rock Ridge (408A)* 3712221, Big Basin (408B)* 3712222, Davenport (408C)* 3712212, Felton (408D)* 3712211, Woodside (429A) 3712243, San Francisco South (448B)* 3712264, Montara Mountain (448C)* 3712254, San Mateo (448D)* 3712253, San Quentin (466B)* 3712284, San Rafael (467A)* 3712285, Point Bonita (467D)*.
Tiny pygmydaisy · Golden chaetopappa · Meager pygmydaisy · Lyon's pygmydaisy · Pygmydaisy
Text excerpted from the Wikipedia article Pentachaeta bellidiflora by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
