CPC Plant Profile: Aquarius Indian-paintbrush
Search / Plant Profile / Castilleja aquariensis
Plant Profile

Aquarius Indian-paintbrush (Castilleja aquariensis)

Castilleja aquariensis in flower Photo Credit: Mark Egger
  • Global Rank: G2 - Imperiled
  • Legal Status: N/A
  • Family: Orobanchaceae
  • State: UT
  • Nature Serve ID: 147176
  • Date Inducted in National Collection: 03/05/1993

Castilleja aquariensis is a perennial herb 6-12in. tall with spikes of vibrant yellow flowers that bloom late June-August. It is endemic to Utah and likely somewhat parasitic. As of 2006 this species was no longer listed as a candidate because a recent survey found more individuals than previously and there is no evidence of factors that might impact the species as posing a threat. The increase of individuals may be attributed to studies that have shown this species trends are potentially linked to the weather, and specifically to precipitation.

Participating Institutions
Nature Serve Biotics
  • 05/02/2017

Endemic to the Aquarius Plateau and Boulder Mountain in Utah. Between 30 and 40 occurrences. This species is threatened by grazing animals that trample and kill the plants and they eat the flower buds and plant tops which limits reproductive capacity. Implementation of a 2004 management agreement may substantially reduce impacts from grazing, in addition to measures currently being conducted at Dixie National Forest to mitigate the effects of grazing. Climate change may reduce the suitability of this species current habitat.?Updated information on threats and plant numbers post management would be helpful to better assess the conservation status.

Heidi Simper
  • 01/01/2010

Grazing (greatest threat) Road realignment Construction related to recreation or timber activities

Heidi Simper
  • 01/01/2010

74,100 individuals

Heidi Simper
  • 01/01/2010

Aquarius paintbrush (Castilleja aqauriensis) Conservation Agreement and Strategy By U.S. Forest Service and U.S. Fish and Wildlife Service.

Heidi Simper
  • 01/01/2010

1996 management agreement to reduce impacts from grazing. Measures currently being conducted at Dixie National Forest to mitigate the effects of grazing. Candidate Conservation Agreement

Heidi Simper
  • 01/01/2010

Determine life history Continued monitoring of populations

Heidi Simper
  • 01/01/2010

Seed conservation


Be the first to post an update!

Taxon Castilleja aquariensis
Authority N. Holmgren
Family Orobanchaceae
CPC Number 801
ITIS 501320
Common Names Aquarius Indian Paintbrush | Aquarius paintbrush
Associated Scientific Names Castilleja aquariensis
Distribution Garfield Co. and Wayne Co. Utah
State Rank
State State Rank
Utah S2

Subalpine sagebrush-grass meadowsOpenings in spruce communities. Rocky soils. 2792-3648m elevation.

Ecological Relationships

Primary pollinators are bumblebees (Bombus sp.)

Common Name Name in Text Association Type Source InteractionID

Donate to CPC to Save this Species

Fall fundraising drive has begun! We're looking for 2,500 people to protect our planet. With you by our side, we will build a future where people live in harmony with nature. Come help and become a CPC donor today.

Donate Today