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Abstract
Cutleaf daisy has a broad North American distribution (Nesom 2006; USDA 2023). In Canada, it occurs in all territories but Ontario. In the United States, populations occur in Alaska and states from Washington east to the Dakotas and south to Colorado, New Mexico, and California. This species is also thought to occur in Greenland, the Arctic bridge gap (at elevations as low as 30-660 ft [10-200 m]), and in far eastern Russia (Nesom 2006; USDA 2023). Populations of apomictic and sexual plants are segregated, and sexual forms are more common and more broadly distributed than apomictic forms (Beaman 1977; Noyes and Soltis 1996). Apomictic populations are usually located more than 60 miles (100 km) from the nearest sexual populations. In places where sexual and asexual population ranges overlap, strong ecological separation exists. In most cases, apomictic plants grow at higher elevations and tolerate more extreme climate and soil conditions than sexual plants (Noyes and Soltis 1996). Based on chromosome counts, embryological studies, and examination of pollen of many herbarium specimens, the greatest diversity of both forms of the species centers in southwestern Montana (Beaman 1977).
Parent Publication
Citation
Gucker, Corey L.; Shaw, Nancy L. 2024. Cutleaf daisy (Erigeron compositus). In: Gucker, C.L.; Shaw, N.L., eds. Western forbs: Biology, ecology, and use in restoration. Reno, NV: Great Basin Fire Science Exchange. Online: https://westernforbs.org/species/cutleaf-daisy-erigeron-compositus/.
