Arapien blazingstar (Mentzelia argillosa)
Description
Mentzelia argillosa is a flowering plant species described by J. Darlington. Mentzelia argillosa is part of the genus Mentzelia and the family of fennel plants . No subspecies are listed in the Catalog of Life. A perennial herb with a somewhat spreading habit. Plants are 2-3 dm tall. Flowers are yellow. In bloom May-August.The species is adapted to survival in steeply sloping and constantly moving talus or scree slopes of the Arapien Shale in Utah (Wesh and Chatterly 1985) and the Green River Formation shale in Colorado (O'Kane 1988). It is frequently found with other oil shale endemics, notably Astragalus lutosus, Thalictrum heliophilum, Penstemon debilis, and Festuca dasyclada. It often grows on scree slopes with little or no other vegetation.
Taxonomic tree
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Domain: Eukarya
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Kingdom: Plantae
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Phylum: Magnoliophyta
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Class: Magnoliopsida
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Order: Cornales
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Family: Loasaceae
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Genus: Mentzelia
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