Grand Canyon National Park Sentry Milk

Currently there is one Federally listed endangered plant found within the boundaries of Grand Canyon National Park: the sentry milk-vetch ( Astragalus cremnophylax var. cremnophylax ). This plant is endemic to Grand Canyon and is a perennial, mat-forming herb. It grows in crevices and on rimrock in the Kaibab Limestone formation within the pinyon-juniper vegetation type. The exact location cannot be disclosed.

The name Astragalus is derived from either the Greek word meaning ankle-bone or dice, perhaps in reference to the rattling of the seed within the fruit, or it may be derived from astro meaning star and gala meaning milk, in reference to the belief that its use in pasture land improves livestock milk yield. The specific epithet cremnophylax is from the words cremno meaning gorge and phylax meaning watchman.

Ready for afternoon park laps, late-night urban sessions, and all-terrain assaults at the resort, the Hemlock Snowboard...
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Featured Park
Zion National Park, a place home to the Narrows, Canyon Overlook, Emerald Pools, a petrified forest, a desert swamp, springs and waterfalls, hanging gardens, wildflowers, wildlife and more!
Featured Wildlife
The bighorn sheep is the mammalian symbol of Colorado Parks and Wildlife and Colorado's official animal. Colorado is home to the largest population of the species anywhere. The animals are five to six feet long with a tail three to six inches in length.
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