Oonopsis foliosa var. monocephala
|goldenweed, rayless goldenweed|
|(A. Nels.) Hall|
The following Participating Institutions are custodians for this species in the CPC National Collection:
CPC National Office
The conservation of Oonopsis foliosa var. monocephala is fully sponsored.
Jim Locklear contributed to this Plant Profile.
The high plains of southeastern Colorado is home to the rayless goldenweed, a wildflower that occurs in places where erosion has thinned the mantle of shortgrass prairie. The ecology of this plant may have been linked with the massive bison herds that once thrashed the prairie during their migrations and created such open places in the past. Today the largest populations of rayless goldenweed occur on a facility of the U.S. Army where tanks now accomplish a similar kind of disturbance.
Distribution & Occurrence
Sparsely vegetated clayey flats and along gullies and eroding toeslopes of limestone hills. Soils typically alkaline, clayey and calcareous, with moderate to high erosion potential. Occurs in a variety of semi-arid grassland and shrubland vegetation. Most often associated with shortgrass prairie, but also occurs in association with shrubs such as Bigelow sage (Artemisia bigelovii) and yucca (Yucca glauca). Elevation 4000-6000 ft.
|Occurs in a variety of grassland and shrubland plant communities on the U.S. Army Pinon Canyon Maneuver Site in Las Animas County, Colorado (Shaw et al. 1989). Can be abundant within a population.|
Conservation, Ecology & Research
Monitoring of populations.
Hall, H.M. 1928. The Genus Haplopappus: a phylogenetic study in the Compositae. Carnegie Institution of Washington, Washington, D.C. 389: 391.
Schulz, K.A.; Shaw, R.B. 1992. Status of Haplopappus fremontii ssp. monocephalus (Asteraceae) in Colorado. Prairie Naturalist. 24, 3: 143-148.