|Colorado gentian, Colorado green gentian|
|(Rogers) D.M. Post|
The following Participating Institutions are custodians for this species in the CPC National Collection:
CPC National Office
The conservation of Frasera coloradensis is fully sponsored.
Jim Locklear contributed to this Plant Profile.
Geological activity in southeastern Colorado has exposed rock formations buried more deeply in other parts of the plains. The Greenhorn Limestone is one of them, outcropping in a scattering of gentle hills and ridges that appear barren from a distance. The unique chemistry of limestone limits the growth of many plants, but not the Colorado gentian. This beautiful wildflower flourishes on the Greenhorn, and is essentially limited to its outcroppings in this remote corner of Colorado.
Distribution & Occurrence
Surfacing rock outcroppings and shallow, rocky soil derived from the Cretaceous-age Greenhorn Limestone Formation and, to a lesser extent, the calcareous Dakota Sandstone Formation. This sparsely vegetated habitat occurs within shortgrass prairie vegetation. Scattered juniper (Juniperus monosperma) is sometimes in association. Elevation 4000-5500 ft.
|Approximately 15-20 known occurrences (Naumann 1991).|
Conservation, Ecology & Research
Roadside herbicide applications.
Tolerates moderate levels of grazing, but may be vulnerable to overgrazing or grazing during reproductive season (Naumann 1991).
Life history research.
Locklear, J. 1988. The Colorado Gentian. Aquilegia. 12, 6: 1, 3.
Locklear, J. 1989. Plight of the Colorado gentian. Bulletin Board. 4, 1: 55.