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Plant Profile

Uinta Greenthread (Thelesperma subnudum)

Thelesperma pubescence-Flowering Photo Credit: Sheryl Goodrich

Global Rank: G2 - Imperiled
Legal Status: N/A
Family: Asteraceae
State: UT, WY
Nature Serve ID: 160132
Lifeform: Forb/herb
Date Inducted in National Collection: 04/04/1991

Description:

Thelesperma pubescens is limited to the Bishop Formation and perhaps adjacent areas in Uinta land Sweetwater Counties, Wyoming. This species has been separated from T. caespitosum by pubescence of the leaves (Dorn 1972). With the discovery of mixed populations of plants with pubescent and glabrous leaves plants on the Tavaputs Plateau, the separation of the 2 taxa is perhaps tenuous. Difference in habitat indicates there might be features other than pubescence that might serve to separate these plants. Regardless of the taxonomic status of these plants, the distribution on the Ashley National Forest remains the same (USDA, 2006).

Where is Uinta Greenthread (Thelesperma subnudum) located in the wild?

Habitat:

This plant occurs on the Badlands of Green River and Uinta Formations. In 1995 surveys were conducted by Fertig. Surveys took place in the Green River and Wyoming areas. Surveys by Forest Service and other botanists have also been conducted and additional populations have been found in the Bad Land Cliffs. The populations in Indian Canyon, Duchesne County are known only by a few collections where extensive survey has not been conducted (USDA, 2006).

Distribution:

Thelesperma pubescens has been found in the extreme northeast corner of the Flaming Gorge National Recreation area in the town of Green River, Wyoming (Fertig 1995), and from the head of the Antelope

States & Provinces:

Uinta Greenthread can be found in Utah, Wyoming

Which CPC Partners conserve Uinta Greenthread (Thelesperma subnudum)?

Red Butte Garden and Arboretum

Not Sponsored

Assigned 06/09/17

CPC's Plant Sponsorship Program provides long term stewardship of rare plants in our National Collection. We are so grateful for all our donors who have made the Plant Sponsorship Program so successful. We are in the process of acknowledging all our wonderful plant sponsorship donors on our website. This is a work in progress and will be updated regularly.

Conservation Actions

Nature Serve Biotics

05/02/2017

Known from four Wyoming sites, all within an area of about 260 square km in southwestern Wyoming. Also reported from Utah, but no status information available from that state. Restricted entirely to soils of the Bishop Conglomerate. Take precautions to avoid negative impacts from oil and gas drilling in the area.

Wendy Yates

01/01/2010

This plant occupies areas with a high amount of natural disturbance. In surveys conducted there has been little or no evidence of grazing. However, evidence of wild life is widespread within the habitat. but most of this use is apparently outside the g