Arctostaphylos incognita, the Cerro Italia manzanita or Incognito manzanita, is a species of manzanita narrowly endemic to the vicinity of Cerro Italia in northern Baja California, where it grows in chaparral west of the town of Ejido Carmen Serdan.[1]
Arctostaphylos incognita grows as a large shrub 1-4m in height, with blue-gray (glaucous) and hairless (glabrous) leaves. It is extremely similar to another Baja California endemic manzanita Arctostaphylos peninsularis, but has different fruit structure and does not overlap in range.
Arctostaphylos incognita only grows on rhyolitic soils near Cerro Italia in extreme northern Baja California at elevations of 300-700m. It has a very small range and has only been noted as far west as the vicinity of San Jose de la Zorra.