CPC Plant Profile: Cushion Bladderpod
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Plant Profile

Cushion Bladderpod (Physaria pulvinata)

Description
  • Global Rank: G1 - Critically Imperiled
  • Legal Status: N/A
  • Family: Brassicaceae
  • State: CO
  • Nature Serve ID: 768522
  • Date Inducted in National Collection:

It forms symmetrical mounds of narrow, spotted leaves and in early summer blooms profusely.

Participating Institutions
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Updates
Nature Serve Biotics
  • 05/02/2017

This species is endemic to Colorado. This species is confined to a shale outcrop that is widely used for road gravel. This species is also on federal land, inlcuding BLM and Forest Service lands. Currently, it is known from only San Miguel and Dolores counties, and it is suspected that it won't be found much further than those counties, it is however, expected to be found at more sites within this range. Physaria pulvinata is threatened by over-grazing on Forest Service lands, ORV activities on BLM lands and removal of shale for road work (pers. comm. Jill Handwerk, Colorado Natural Heritage Program, O'Kane and Reveal 2006).

O'Kane & Reveal, Mary VB Goshorn
  • 01/01/2010

The primary threat is considered to be recreation, both motorized and non-motorized. This Physaria species is threatened by over-grazing on Forest Service lands, ORV activities on BLM lands and removal of shale for road work. There are only four known occ

O'Kane & Reveal, Mary VB Goshorn
  • 01/01/2010

There are 6 principal occurrences documented in the Colorado Natural Heritage Program database. Total estimated sum of individuals from documented occurrences is 22,000.

O'Kane & Reveal, Mary VB Goshorn
  • 01/01/2010

Unknown.

O'Kane & Reveal, Mary VB Goshorn
  • 01/01/2010

On both BLM and USFS Sensitive Species lists

O'Kane & Reveal, Mary VB Goshorn
  • 01/01/2010

There have been no studies of the demography and life history of this species.

O'Kane & Reveal, Mary VB Goshorn
  • 01/01/2010

Seed collection and storage.

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Photos
Nomenclature
Taxon Physaria pulvinata
Authority O'Kane & Reveal
Family Brassicaceae
CPC Number 44527
ITIS 823229
USDA
Common Names cushion bladderpod
Associated Scientific Names Physaria pulvinata
Distribution Endemic to Colorado; known from San Miguel and Dolores counties. Estimated range is 55 square kilometers (21 square miles).
State Rank
State State Rank
Colorado S1
Habitat

This species is confined to a shale outcrop that is widely used for road gravel. It is found on scattered outcrops of grayish, argillaceous shale.

Ecological Relationships

There have been no studies of the demography and life history of this species. Members of Physaria are typically rather short-lived perennials.

Pollinators
Common Name Name in Text Association Type Source InteractionID
Reintroduction
Lead Institution State Reintroduction Type Year of First Outplanting

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