Arctostaphylos imbricata |
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San Bruno Mountain manzanita |
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Habit | 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. |
Arctostaphylos imbricata |
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Phenology | Flowering winter–early spring. |
Habitat | Maritime chaparral on sandstone outcroppings |
Elevation | 100-200 m (300-700 ft) |
Distribution |
CA
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Discussion | Of conservation concern. 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. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 8, p. 435. |
Parent taxa | Ericaceae > subfam. Arbutoideae > Arctostaphylos |
Sibling taxa | |
Synonyms | A. andersonii var. imbricata |
Name authority | Eastwood: Proc. Calif. Acad. Sci., ser. 4, 20: 149. 1931 , |
Web links |