Arctostaphylos auriculata |
Arctostaphylos rainbowensis |
|
---|---|---|
Mount Diablo manzanita, Mt. Diablo manzanita |
rainbow manzanita |
|
Habit | Shrubs, erect, 1–4.5 m; burl absent; twigs densely white-hairy with long, white hairs. | Shrubs, erect, 1–4 m; burl present; twigs minutely 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 6–12 mm; blade light green to weakly glaucous or glaucous, dull, elliptic-ovate, 3.5–5 × 2–3.5 cm, base rounded, margins entire, plane, surfaces smooth, glabrous. |
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, 4–10-branched; immature inflorescence pendent, axis 2–3 cm, 1+ mm diam., glabrous; bracts appressed, scalelike, deltate to awl-like, 2–4 mm, apex acute, surfaces glabrous. |
Pedicels | 4–10 mm, tomentose. |
5–10 mm, glabrous. |
Flowers | corolla white to pink, conic; ovary densely white-hairy. |
corolla white, conic to urceolate; ovary glabrous. |
Fruits | depressed-globose, 5–10 mm diam., short white-hairy, glabrescent. |
globose, 8–12 mm diam., glabrous. |
Stones | distinct. |
connate into single sphere. |
2n | = 26. |
= 26. |
Arctostaphylos auriculata |
Arctostaphylos rainbowensis |
|
Phenology | Flowering winter–early spring. | Flowering winter–early spring. |
Habitat | Chaparral, open, closed-cone conifer forests | Chaparral of granite uplands |
Elevation | 300-500 m (1000-1600 ft) | 500-700 m (1600-2300 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 rainbowensis is found in a coastal portion of the Peninsular Range in northern San Diego and adjacent Riverside counties. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 8, p. 430. | FNA vol. 8, p. 422. |
Parent taxa | Ericaceae > subfam. Arbutoideae > Arctostaphylos | Ericaceae > subfam. Arbutoideae > Arctostaphylos |
Sibling taxa | ||
Name authority | Eastwood: Bull. Torrey Bot. Club 32: 202. 1905 , | J. E. Keeley & Massihi: Madroño 41: 2, fig. 1. 1994 , |
Web links |