CPC Plant Profile: Brandegee's Buckwheat
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Plant Profile

Brandegee's Buckwheat (Eriogonum brandegeei)

Image of Eriogonum brandegeei Photo Credit: Thomas A. Grant III
Description
  • Global Rank: N/A
  • Legal Status: N/A
  • Family: Polygonaceae
  • State: CO
  • Nature Serve ID: 161694
  • Date Inducted in National Collection:

Eriogonum brandegeei (also spelled brandegei), Brandegees wild buckwheat, is a 10-25 cm tall perennial. It has an unbranched, scapose, and tomentose flowering stalk and leaves which are densely tomentose on both sides. It blooms from July to August with white to pinkish or yellow flowers, and fruits from August to September.

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Updates
  • 09/09/2020
  • Demographic Research

Denver Botanic Gardens Research staff initiated a demographic study on two sites in 2004 and has been collecting data annually. They are also conducting counts throughout the entire range to establish trends of the species. Data collected by Denver Botanic Gardens Research staff indicates that the number of plants has been stable from 2004-2008 within its limited available habitat.

Nature Serve Biotics
  • 05/02/2017

This species is known only from southcentral Colorado in a habitat that is threatened by residential and recreational developments and by road construction.

Laura Smith
  • 01/01/2010

Habitat of Brandegees wild buckwheat is threatened primarily by off-road vehicle use, residential and recreational development, and road construction. Other threats include timber thinning and extraction, mining, right-of-way management, exotic species in

Laura Smith
  • 01/01/2010

Population estimates range between 35,000 and several million plants. Data collected by Denver Botanic Gardens Research staff indicates that the number of plants has been stable from 2004-2008 within its limited available habitat.

Laura Smith
  • 01/01/2010

Denver Botanic Gardens Research staff initiated a demographic study on two sites in 2004 and has been collecting data annually. They are also conducting counts throughout the entire range to establish trends of the species.

Laura Smith
  • 01/01/2010

Eriogonum brandegeei was previously a candidate for Federal Listing but was removed in 1996. Some of its range is found in a Colorado Natural Area, and is managed to protect the population and its habitat.

Laura Smith
  • 01/01/2010

Potential habitat on Canon City District BLM land was determined using aerial photographs, soil maps, and topographic maps. All potential habitat in this study area was searched during the field season of 1995. Remaining potential habitat should be determined and search on adjacent Forest Service and private lands, especially between Salida and Buena Vista. Remaining potential habitat is likely scarce (NatureServe 2008).

Laura Smith
  • 01/01/2010

Not Available

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Photos
Nomenclature
Taxon Eriogonum brandegeei
Authority Rydb.
Family Polygonaceae
CPC Number 1691
ITIS 21082
USDA ERBR9
Common Names Brandegee Wild Buckwheat | Brandegee's buckwheat
Associated Scientific Names Eriogonum brandegeei
Distribution This species is known from five sites in Chaffee and Fremont Counties of Colorado.
State Rank
State State Rank
Colorado S1S2
Habitat

White to grayish soils ranging from limestone to shale in open sagebrush and pinyon-juniper communities. Parent material is the Dry Union Formation and the lower members of the Morrison Formation. 1740-2320 m elevation.

Ecological Relationships

A fungal rust found on the plants was identified as Uromyces sp. by the Colorado State University Cooperative Extension. The rust appears to be a disease that affects Eriogonum brandegeei on a cyclical basis and rarely causes significant damage to the plants.

Pollinators
Common Name Name in Text Association Type Source InteractionID
Bees
Bees Confirmed Pollinator Link
Sweat bees Lasioglossum Floral Visitor Link
Butterflies & Moths
Moths Floral Visitor Link
Flies
Flies Confirmed Pollinator Link
Bee flies Bombyliidae Floral Visitor Link
Other
Ants Floral Visitor Link
Formicidae Floral Visitor Link
Weevil wasps Eucerceris Floral Visitor Link
Reintroduction
Lead Institution State Reintroduction Type Year of First Outplanting

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