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Mentzelia collomiae
Mentzelia collomiae, known by the common name Sunset Crater blazingstar, is a species of flowering plant endemic to Arizona, known only to occur in the San Francisco Volcanic Field of Coconino County, primarily in the Sunset Crater Volcano National Monument.
The only suitable habitat for M. collomiae is found within the 110 square miles of the San Francisco Volcanic Fields, where it occurs on the flat ground and relatively undisturbed slopes of the volcanic cinders, with Pinus ponderosa as the dominant plant species. The main population of M. collomiae inhabits the area around the Sunset Crater National Monument, with an isolated population at the nearby Red Mountain. There is little soil development, with the cinder landscape being sparsely vegetated to barren. The cinders of its habitat average 1 cm in diameter, with M. collomiae being unable to grow in cinders with the consistency of coarse sand, large cinders, or lava fragments that make up most other cinder cones.
Yellowcomet · Whitestem blazingstar · Tropical blazingstar · Candelaria blazingstar · Gold blazingstar · United blazingstar · Sierra blazingstar · Tenpetal blazingstar · Royal Gorge blazingstar · Bushy blazingstar · Pinyon blazingstar · Goodrich's blazingstar
Text excerpted from the Wikipedia article Mentzelia collomiae by its contributors, under CC BY-SA 4.0; the excerpts are shared under the same licence.
Life form, climate and native range: World Checklist of Vascular Plants, Royal Botanic Gardens, Kew (CC BY 3.0), reformatted; see Plants of the World Online.
