Arctostaphylos auriculata |
Arctostaphylos cruzensis |
|
---|---|---|
Mount Diablo manzanita, Mt. Diablo manzanita |
Arroyo De La cruz manzanita, La Cruz 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 sparsely short-hairy to sparsely 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 to 2 mm; blade bright green, shiny, oblong-ovate, 1.5–3 × 1–2.5 cm, base auriculate-clasping, margins entire or toothed, plane, (hairy-ciliate proximally), surfaces smooth, finely tomentose, glabrescent. |
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, 1–3-branched; immature inflorescence pendent, (branches crowded, bell-shaped, concealed by bracts), axis 0.5–1.5 cm, 1+ mm diam., sparsely short-hairy and hairy; bracts appressed, leaflike, lanceolate to lanceolate-ovate, 5–15 mm, apex acute, surfaces hairy. |
Pedicels | 4–10 mm, tomentose. |
4–5 mm, sparsely hairy. |
Flowers | corolla white to pink, conic; ovary densely white-hairy. |
corolla white, urceolate; ovary densely white-hairy. |
Fruits | depressed-globose, 5–10 mm diam., short white-hairy, glabrescent. |
depressed-globose, 8–10 mm diam., glabrous. |
Stones | distinct. |
distinct. |
2n | = 26. |
= 26. |
Arctostaphylos auriculata |
Arctostaphylos cruzensis |
|
Phenology | Flowering winter–early spring. | Flowering winter–early spring. |
Habitat | Chaparral, open, closed-cone conifer forests | Maritime chaparral, grasslands on alluvial and fluvial soils |
Elevation | 300-500 m (1000-1600 ft) | 0-100 m (0-300 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 cruzensis is found near the coast in southern Monterey and northern San Luis Obispo counties. 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 | ||
Name authority | Eastwood: Bull. Torrey Bot. Club 32: 202. 1905 , | Roof: Leafl. W. Bot 9: 218. 1962 , |
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