Erigeron uncialis explained

Erigeron uncialis is a North American species of flowering plant in the family Asteraceae known by the common name lone fleabane or limestone daisy. It is native to the western United States, in the states of Nevada and California.^{[1] [2]}

Erigeron uncialis grows on cliff faces, usually limestone, often alongside various conifer trees. It is a clump-forming perennial herb rarely more than 7 centimeters (2.8 inches) tall, producing a taproot and a woody underground caudex. The inflorescence is made up of only one flower heads per stem. Each head contains 22–30 white or pink ray florets surrounding numerous yellow disc florets.^[3]

Varieties^{[4] [3]}

• Erigeron uncialis var. conjugans S.F.Blake - Nevada
• Erigeron uncialis var. uncialis - California

Notes and References

1. http://bonap.net/MapGallery/County/Erigeron%20uncialis.png Biota of North America Program 2014 county distribution map
2. http://www.calflora.org/cgi-bin/species_query.cgi?where-taxon=Erigeron+uncialis+var.+uncialis Calflora taxon report, University of California, Erigeron uncialis S.F. Blake var. uncialis, limestone daisy
3. http://www.efloras.org/florataxon.aspx?flora_id=1&taxon_id=250066692 Flora of North America, Erigeron uncialis S. F. Blake, 1934. Lone fleabane
4. http://www.theplantlist.org/tpl1.1/record/gcc-97284 The Plant List, Erigeron uncialis S.F.Blake