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Pediocactus knowltonii
Also called And Knowlton's minute cactus, Knowlton's pincushion cactus, Knowlton's Cactus, Knowlton's Minute Cactus, Thimble Plains Cactus
Pediocactus knowltonii is a rare species of cactus known by the common names Knowlton's miniature cactus, Knowlton's pincushion cactus, and Knowlton's minute cactus.
It is endemic to San Juan County, New Mexico in the United States, where there is a single population on a patch of territory measuring about 12 acres (49,000 m2). As of 2008, there are approximately 6100 individuals in this population. The cactus occurs on land very close to the Colorado border; in fact, it has been observed within 30 meters (100 ft) of the state border, but it does not technically occur within the state of Colorado, and is thus an endemic of New Mexico. Its habitat is pinyon-juniper woodland and sagebrush with loamy, gravelly alluvial soils. In some areas the substrate is covered in cobbles. The cactus may grow in the open or in the shade of larger plants.
Pediocactus bradyi subsp. despainii · Marble Canyon cactus · Simpson's Hedgehog Cactus · Kaibab pincushion cactus · Navajo pincushion cactus · Siler's Pincushion Cactus · Mountain ball cactus · Pediocactus bradyi subsp. winkleri · Pincushion cactus
Text excerpted from the Wikipedia article Pediocactus knowltonii 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.
