Arctostaphylos auriculata |
Arctostaphylos imbricata |
|
---|---|---|
Mount Diablo manzanita, Mt. Diablo manzanita |
San Bruno Mountain manzanita |
|
Habit | Shrubs, erect, 1–4.5 m; burl absent; twigs densely white-hairy with long, white hairs. | 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 whitish gray, dull, oblong-ovate to orbiculate-ovate, 1.5–4.5 × 1.5–3 cm, base distinctly lobed, auriculate-clasping, margins entire, plane, surfaces smooth, gray-canescent, glabrescent. |
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 crowded, ± obscured by bracts), axis 1–1.5 cm, 1+ mm diam., densely white-hairy with long, white hairs; bracts somewhat appressed, leaflike, ovate to lanceolate-ovate, 5–15 mm, apex acute, surfaces canescent. |
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 | 4–10 mm, tomentose. |
3–5 mm, densely glandular-hairy. |
Flowers | corolla white to pink, conic; ovary densely white-hairy. |
corolla white, urceolate; ovary densely glandular-hairy. |
Fruits | depressed-globose, 5–10 mm diam., short white-hairy, glabrescent. |
depressed-globose, 6–7 mm diam., glandular-hairy, (± viscid). |
Stones | distinct. |
distinct. |
2n | = 26. |
= 26. |
Arctostaphylos auriculata |
Arctostaphylos imbricata |
|
Phenology | Flowering winter–early spring. | Flowering winter–early spring. |
Habitat | Chaparral, open, closed-cone conifer forests | Maritime chaparral on sandstone outcroppings |
Elevation | 300-500 m (1000-1600 ft) | 100-200 m (300-700 ft) |
Distribution |
CA |
CA
|
Discussion | Of conservation concern. Arctostaphylos auriculata is found on the western slopes of Mount Diablo in Contra Costa County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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. 430. | FNA vol. 8, p. 435. |
Parent taxa | Ericaceae > subfam. Arbutoideae > Arctostaphylos | Ericaceae > subfam. Arbutoideae > Arctostaphylos |
Sibling taxa | ||
Synonyms | A. andersonii var. imbricata | |
Name authority | Eastwood: Bull. Torrey Bot. Club 32: 202. 1905 , | Eastwood: Proc. Calif. Acad. Sci., ser. 4, 20: 149. 1931 , |
Web links |