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Professor daisy
Erigeron proselyticus
NatureServe conservation status
Global (G-rank): GNRT3
State (S-rank): S3
External links
Species range
Estimate from download of data from Utah Rare Plant Database on April 5th 2023.
Geocat 86 observations: Extent of Occurrence: 992.350 km2.
Historic observations over 40 years old were not used.
Endemic to the Markagunt Plateau in southeastern Iron County and adjacent northwest Kane County and the Table Cliff Plateau in western Garfield County, Utah (Stone 1998, Fertig and Reynolds 2009). Seeps, hanging gardens, and riparian communities in Navajo and Wingate sandstones at 1220 to 2260 m in Zion National Park Washington and w. Kane (e. to Lick Draw) cos, and with bristlecone pine, spruce-fir, and aspen communities on sandstones of the Mesa Verde group and marly limestone of the Pink and White Limestone members of the Tertiary Claron Formation at 2440 to 3050 m in w. Garfield and e. Iron and w. Kane cos.; a Virgin Basin-Southern Plateaus endemic (Welsh et al 2015).
Threats or limiting factors
On the Dixie National Forest, "threats are very low to non-existent" (M. Madsen, pers. comm., 2013). An occurrence on privately owned land has hiking use but "in most cases the plant's habitat is inaccessible"; timber harvests, and grazing occur in surrounding areas but not in the immediate area (EO Data in the NatureServe database as of March 2013). Road construction and quarrying of limestone were previously mentioned as possible threats, but as of 2013, no information about these threats was found. Drought may also be impacting this species throughout it's range.The Utah Division of Water Resources reports that Utah is now in "extreme" or "exceptional" drought which is likely impacting this species in similar ways as it is other perennial forbs in Utah.
