Erigeron petrophilus is a species of flowering plant in the family Asteraceae known by the common names rockloving erigeron or cliff fleabane.[2] It is native to the mountain ranges of California from Siskiyou County south as far as San Luis Obispo County and El Dorado County.[2] It also grows in southwestern Oregon.[3]
| Erigeron petrophilus | |
|---|---|
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| Erigeron petrophilus var. viscidulus | |
Scientific classification 
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| Kingdom: | Plantae |
| Clade: | Tracheophytes |
| Clade: | Angiosperms |
| Clade: | Eudicots |
| Clade: | Asterids |
| Order: | Asterales |
| Family: | Asteraceae |
| Genus: | Erigeron |
| Species: | E. petrophilus
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| Binomial name | |
| Erigeron petrophilus | |
| Synonyms[1] | |
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Erigeron petrophilus grows in forest and woodland, often, as its name suggests, in rocky habitat. It is sometimes grows on serpentine soils. This is a perennial herb growing many hairy, glandular, spreading stems from a tough, woody caudex. The narrow, oblong leaves are equal in size and spaced evenly along each stem. The inflorescence is a cluster of several flower heads, each just over a centimeter (0.5 inches) wide and lined with layers of fuzzy, glandular phyllaries. The heads contains many yellow disc florets but no ray florets. The fruit is a small achene with a pappus of bristles.[4][5]
- Erigeron petrophilus var. petrophilus - Coast Ranges from Siskiyou County to Monterey County
- Erigeron petrophilus var. sierrensis, the Sierra erigeron or northern Sierra daisy - northern Sierra Nevada of California from El Dorado County to Plumas County
- Erigeron petrophilus var. viscidulus (A. Gray) G. L. Nesom, the Klamath rock daisy - Klamath Mountains of northwestern California + southwestern Oregon, plus Coast Ranges as far south as Sonoma County and Sierra Nevada foothills in Butte County
References
edit- ^ The Plant List, Erigeron petrophilus Greene
- ^ a b c Calflora taxon report, University of California, Erigeron petrophilus E. Greene, cliff fleabane, rockloving erigeron
- ^ Biota of North America Program 2014 county distribution map[permanent dead link] png
- ^ a b Flora of North America, Erigeron petrophilus Greene
- ^ Greene, Edward Lee 1888. Pittonia 1(15): 218–219
External links
edit- Jepson Manual Treatment
- United States Department of Agriculture Plants Profile
- Calphotos Photo gallery, University of Calilfornia
- Photo of herbarium specimen at Missouri Botanical Garden, collected in Yuba County in 1983, isotype of Erigeron petrophilus var. sierrensis