The following Participating Institutions are custodians for this species in the CPC National Collection:
The conservation of Penstemon haydenii is fully sponsored.
Jim Locklear contributed to this Plant Profile.
The sandhills region of Nebraska constitutes the largest dune field in the western hemisphere and one of the largest intact grasslands in North America. While most of the dunes are mantled with prairie vegetation, wind erosion opens up areas of bare sand called blowouts. The blowout penstemon inhabits such places, only to disappear as grasses and forbs reclaim the blowout. Once thought to occur exclusively in Nebraska, this endangered species was recently discovered over 180 miles away on sand dunes in central Wyoming.
Distribution & Occurrence
Limited to the sandhills region of west-central Nebraska, and sand dune habitat in the northeastern Great Divide Basin in Wyoming. In Nebraska this plant typically occurs in "blowouts" - sparsely vegetated depressions in active sand dunes created by wind erosion. In Wyoming it occurs on sandy aprons or the lower half of steep sandy slopes deposited at the base of granitic or sedimentary mountains or ridges. Elevation 2800-3800 ft. in Nebraska; 6680-7440 ft. in Wyoming.
| Thirteen sites in Nebraska, with 3,000-5,000 individuals total (Stubbendieck et al. 1997).
Two populations in Wyoming, with 4,200-5,800 individuals total (Fertig 2001).
Conservation, Ecology & Research
Pollinators in Nebraska are primarily megachilid bees, along with wasps, ants, beetles, butterflies and flies (Lawson et al. 1989).
Hand- and sulfuric acid scarification significantly enhances germination of blowout penstemon seed. Sulfuric acid pretreatment produces acceptable results and is much less time-consuming. Germinability of seed is not enhanced by light and alternating temperatures. Freshly harvested seed does not exhibit afterripening requirements (Flessner and Stubbendieck 1989).
Reintroduce new populations into historic range.
Tepedino, V.J. 2002. Section III. Environmental Monitoring. III.5 The Reproductive Biology of Rare Rangeland Plants and Their Vulnerability to Insecticides. Grasshoppers: Their biology, identification and management, User Handbook.