Arctostaphylos auriculata |
Arctostaphylos virgata |
|
---|---|---|
Mount Diablo manzanita, Mt. Diablo manzanita |
Bolinas manzanita, Marin manzanita |
|
Habit | Shrubs, erect, 1–4.5 m; burl absent; twigs densely white-hairy with long, white hairs. | Shrubs, erect, 1–5 m; burl absent; twigs densely glandular-hairy. |
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 2–4 mm; blade bright green, ± shiny, narrowly oblong-ovate to oblong-lanceolate, 3–5 × 1–2.5 cm, base truncate to slightly lobed, margins entire, plane, surfaces papillate, 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. |
racemes, simple or 1-branched; immature inflorescence pendent, (concealed by bracts), axis 1.5–2 cm, 1+ mm diam., densely glandular-hairy; bracts not appressed, (green), leaflike, linear-lanceolate, 8–20 mm, apex acuminate, surfaces densely glandular-hairy. |
Pedicels | 4–10 mm, tomentose. |
3–8 mm, finely glandular-hairy. |
Flowers | corolla white to pink, conic; ovary densely white-hairy. |
corolla white, conic to urceolate; ovary glandular-hairy. |
Fruits | depressed-globose, 5–10 mm diam., short white-hairy, glabrescent. |
depressed-globose, 6–8 mm diam., finely glandular-hairy, (viscid). |
Stones | distinct. |
distinct. |
2n | = 26. |
= 26. |
Arctostaphylos auriculata |
Arctostaphylos virgata |
|
Phenology | Flowering winter–early spring. | Flowering early winter–early spring. |
Habitat | Chaparral, open, closed-cone conifer forests | Maritime chaparral, open, closed-cone conifer forests |
Elevation | 300-500 m (1000-1600 ft) | 0-500 m (0-1600 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 virgata is associated mostly with Pinus muricata on the Point Reyes peninsula; populations are found at nearby sites from Bolinas Ridge, Muir Woods, and San Geronimo Ridge, Marin County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 8, p. 430. | FNA vol. 8, p. 426. |
Parent taxa | Ericaceae > subfam. Arbutoideae > Arctostaphylos | Ericaceae > subfam. Arbutoideae > Arctostaphylos |
Sibling taxa | ||
Name authority | Eastwood: Bull. Torrey Bot. Club 32: 202. 1905 , | Eastwood: in C. S. Sargent, Trees & Shrubs 1: 203, plate 96. 1905 , |
Web links |