Rubus sierrae is a rare Mexican species of bramble. The plant has trifoliate leaves and solitary flowers. It is unusual in the genus in having distinctive serrate sepals.Laferriere, Joseph E. 1991. Optimal use of ethnobotanical resources by the Mountain Pima of Chihuahua, Mexico. PhD Dissertation, University of Arizona. The species is named in memory of Dionisia Sierra Cruz (1985–87) of the village of Nabogame.
It is known from a single collection near Nabogame, Chihuahua, in the Sierra Madre Occidental approximately northwest of Yepachic. The specimen was collected in riparian forest dominated by Acer grandidentatum Nutt. and Cupressus lusitanica.SEINet, Southwestern Biodiversity, Arizona chapter includes distribution map
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