Dudley Bluffs bladderpod (Lesquerella congesta)
Where Listed: WHEREVER FOUND
Dudley Bluffs bladderpod (Physaria congesta, was Lesquerella congesta) is a herbaceous (non-woody) plant species in the mustard family (Brassicaceae). It is an extremely small cushion plant growing only 1 to 3 cm (0.4 to 1.2 inches) in diameter. It has small silvery leaves clustered at the base and attached to a large woody taproot. In late April to late May the Dudley Bluffs bladderpod is easy to spot when its bright yellow flowers bloom. The rest of the year it is inconspicuous and may go unnoticed. Seeds are contained in small air-filled sacs, hence the common name “bladderpod.” Dudley Bluffs bladderpod is only known to occur in the Piceance Creek area, of Rio Blanco County in western Colorado, near the town of Meeker. Dudley Bluffs bladderpod is located primarily within the Duck Creek drainage. Its known habitat is flat or low angled slopes of the Thirteenmile Creek and Yellow Creek tongues of the Green River Formation. These shale outcrops have little soil development and are very harsh for plant growth; only plants adapted to survive in these conditions may thrive. The unique geology of the Piceance Creek area is important to the Dudley Bluffs bladderpod (and many other endemic plant species). It is also part of the Piceance Basin’s multimineral oil shale zone, an area containing large reserves of oil shale, natural gas, and minerals. Energy exploration, extraction, and the many associated activities in the region can disturb or degrade the fragile shale habitats. They can also pose a threat to native ground nesting bees that pollinate Dudley Bluffs bladderpod. Others threats include weed invasion and increased access to these remote areas by recreationists.
- States/US Territories in which the Dudley Bluffs bladderpod is known to or is believed to occur: Colorado
- US Counties in which the Dudley Bluffs bladderpod is known to or is believed to occur: View All
- Additional species information
|Status||Date Listed||Lead Region||Where Listed|
|02/06/1990||Mountain-Prairie Region (Region 6)|
» Federal Register Documents
|05/27/2016||81 FR 33698 33700||ETWP; Initiation of 5-Year Status Reviews of 21 Species in the Mountain-Prairie Region|
|01/24/1989||54 FR 3497 3501||ETWP; Proposed to Determine Lesquerella congesta and Physaria obcordata to be a Threatened Species; 54 FR 3497 3501|
|02/06/1990||55 FR 4152 4157||ETWP; Final Rule to Determine Lesquerella congesta (Dudley Bluffs Bladderpod) and Physaria obcordata (Dudley Bluffs Twinpod) to be Threatened; 55 FR 4152 5157|
|09/20/2006||71 FR 55005 55007||Endangered and Threatened Wildlife and Plants; Initiation of a 5-Year Review of Kendall Warm Springs dace, Dudley Bluffs bladderpod, and Dudley Bluffs twinpod|
|Date||Title||Plan Action Status||Plan Status|
|08/13/1993||Dudley Bluffs Bladderpod/Twinpod (2 spp.)||View Implementation Progress||Final|
|Date||Citation Page||Title||Document Type|
|05/27/2016||81 FR 33698 33700||ETWP; Initiation of 5-Year Status Reviews of 21 Species in the Mountain-Prairie Region||
|09/20/2006||71 FR 55005 55007||Endangered and Threatened Wildlife and Plants; Initiation of a 5-Year Review of Kendall Warm Springs dace, Dudley Bluffs bladderpod, and Dudley Bluffs twinpod||
|06/20/2008||Dudley Bluffs Bladderpod and Dudley Bluffs Twinpod 5-Year Reviews|
» Critical Habitat
No critical habitat rules have been published for the Dudley Bluffs bladderpod.
» Conservation Plans
No conservation plans have been created for Dudley Bluffs bladderpod.
» Life History
No Life History information has been entered into this system for this species.
» Other Resources
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ITIS Reports -- ITIS (the Integrated Taxonomic Information System) is a source for authoritative taxonomic information on plants, animals, fungi, and microbes of North America and the world.
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