J.B. Roof 
This perennial evergreen shrub is endemic to California, native only to a few occurrences in northern San Mateo County on San Bruno Mountain and Montara Mountain, northern extensions of the Santa Cruz Mountains.
The plant is ranked as a Critically endangered species by the California Native Plant Society Inventory of Rare and Endangered Plants of California, due to being threatened by new developments and off trail/road walking and vehicle (e.g. motorcycles, mountain bikes) habitat degradation. 
Arctostaphylos montaraensis is a mounding to erect shrub that can grow to heights from 0.5 metres (1.6 ft) (on exposed granite outcrops) to 5 metres (16 ft). The multiple trunks and stems have a deep reddish−brown bark. The twigs and nascent inflorescence axis are coated in glandular bristles. The shrub has a dense foliage of light gray−green glandular leaves, rough and dull in texture, and up to 4 or 5 centimeters long.
The inflorescence is a dense cluster of cone-shaped manzanita flowers, each white in color, and just under a centimeter long and with bristles inside. The flowering period is January through March.
The small "apple−like" (Spanish manzanita) red fruits are 6–7 millimetres (0.24–0.28 in) wide.
- California coastal sage and chaparral ecoregion
- Natural history of the California chaparral and woodlands
- Calflora: Arctostaphylos montaraensis
- Jepson eFlora: Arctostaphylos montaraensis
- California Native Plant Society, Rare Plant Program. 2017; Inventory of Rare and Endangered Plants of California (online edition, v8-03 0.39): Arctostaphylos montaraensis report . accessed 5.5.2017.
- Yerba Buena Nursery, native plant horticulture database: Arctostaphylos montaraensis
- Calflora Database: Arctostaphylos montaraensis (Montara manzanita)
- Jepson Manual eFlora (TJM2) treatment of Arctostaphylos montaraensis
- USDA Plants Profile for Arctostaphylos montaraensis
- UC CalPhotos gallery of Arctostaphylos montaraensis images
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