George Everett Osterhout

Astragalus linifolius is a species of flowering plant in the legume family known by the common name Grand Junction milkvetch. It is endemic to Colorado in the United States, where it is only found on the Uncompahgre Plateau in Delta, Mesa, and Montrose Counties. There are 21 occurrences, mostly in the general vicinity of Grand Junction. This perennial herb grows up to 50 centimeters in height. In May and June it produces many white flowers with purple-tinged keels. The fruit is a red legume pod. It grows on adobe and sandstone in pinyon-juniper woodland and sagebrush habitat. This species is

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Artemisia spiciformis is a North American species in the sunflower family, with the common name snowfield sagebrush. It grows at high elevations in the mountains, frequently in the vicinity of late-season snow.

Phacelia formosula is a rare species of flowering plant in the borage family known by the common name North Park phacelia. It is endemic to the state of Colorado in the United States, where it is known only from the North Park region in Jackson County. It is threatened by a number of human activities, such as motorcycle and off-road vehicle use in its habitat. It is a federally listed endangered species of the United States. This plant was first collected on August 6, 1918, near Walden, Colorado. It was placed on the US Endangered Species List on September 1, 1982. There are eight to eleven

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Townsendia leptotes is a species of flowering plant in the family Asteraceae known by the common names common Townsend daisy and slender townsendia. It is native to the western United States, where it grows in the alpine climates of high mountain ranges from California to Montana to New Mexico. This is a petite perennial herb taking a clumped form just a few centimeters tall, its herbage growing on a caudex and taproot unit. The leaves are one to two centimeters long, linear or lance-shaped, and coated in rough hairs. The plant blooms in a profusion of flower heads each one to two centimeters

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Mentzelia multicaulis, also known as manystem blazingstar, is a species of plant in the stickleaf family that is endemic to three counties in the state of Colorado.

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