''Rubus sierrae'' is a small Mexican species of shrub in the genus ''

Rubus ''Rubus'' is a large and diverse genus of flowering plants in the rose family, Rosaceae, subfamily Rosoideae, with over 1,350 species. Raspberries, blackberries, and dewberries are common, widely distributed members of the genus. Most of the ...

'', family Rosaceae. It is known from a single collection from near the village of Nabogame, Chihuahua, Mexico, in the

Sierra Madre Occidental The Sierra Madre Occidental is a major mountain range system of the North American Cordillera, that runs northwest–southeast through northwestern and western Mexico, and along the Gulf of California. The Sierra Madre is part of the American ...

approximately 18 km northwest of

Yepachic Yepáchic, sometimes spelled Yepáchi, is a community in the western part of the Mexican State of Chihuahua, approximately east of the boundary with the State of Sonora. It is located in the Municipio de Temósachic at an altitude of in the Sie ...

. The specimen was collected in riparian forest dominated by ''

Acer grandidentatum ''Acer grandidentatum'', commonly called bigtooth maple, is a species of maple native to interior western North America. It occurs in scattered populations from western Montana to central Texas in the United States and south to Coahuila in northe ...

'' Nutt. and ''

Cupressus lusitanica ''Cupressus lusitanica'', the Mexican cedar or cedar-of-Goa, is a species of cypress native to Mexico and Central America (Guatemala, El Salvador and Honduras). It has also been introduced to Belize, Costa Rica and Nicaragua, growing at altitu ...

''. ''Rubus sierrae'' has ternate 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.
/ref> It is named in memory of Dionisia Sierra Cruz (1985–87), of Nabogame.

References

{{Taxonbar, from=Q16992354 sierrae Flora of Chihuahua (state) Plants described in 1998