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Arctostaphylos imbricata Eastw.  

No occurrences found

Family: Ericaceae
San Bruno Mountain manzanita
[Arctostaphylos andersonii var. imbricata (Eastw.) J.E.Adams ex McMinn]
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V. Thomas Parker, Michael C. Vasey, Jon E. Keeley in Flora of North America (vol. 8)
Shrubs, prostrate or mat- or mound-forming, 0.1-1 m; burl absent; twigs densely fine-hairy with long, gland-tipped hairs. Leaves: petiole to 2 mm; blade light green, dull, orbiculate to orbiculate-ovate, 2.5-4 × 2-3 cm, base auriculate-clasping, margins entire, plane, surfaces papillate, ± scabrous, sparsely glandular-hairy. Inflorescences panicles, 3-5-branched; immature inflorescence pendent, (branches densely clustered, ± sessile), axis 0.5-1 cm, 1+ mm diam., densely fine-hairy with long, gland-tipped hairs; bracts appressed, leaflike, ovate, 5-10 mm, apex acute, surfaces glandular-hairy. Pedicels 3-5 mm, densely glandular-hairy. Flowers: corolla white, urceolate; ovary densely glandular-hairy. Fruits depressed-globose, 6-7 mm diam., glandular-hairy, (± viscid). Stones distinct. 2n = 26. Flowering winter-early spring. Maritime chaparral on sandstone outcroppings; of conservation concern; 100-200 m; Calif. Arctostaphylos imbricata occurs on San Bruno Mountain in San Mateo County. It is in the Center for Plant Conservation´s National Collection of Endangered Plants.

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