Arctostaphylos auriculata |
Arctostaphylos franciscana |
|
---|---|---|
Mount Diablo manzanita, Mt. Diablo manzanita |
Franciscan manzanita |
|
Habit | Shrubs, erect, 1–4.5 m; burl absent; twigs densely white-hairy with long, white hairs. | Shrubs, prostrate or mat-forming, 0.2–1.5 m; burl absent; twigs gray-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 3–5 mm, (eglandular); blade bright green, shiny, oblanceolate, 1.5–2 × 0.5–1 cm, base cuneate, margins entire, plane, surfaces smooth, ± puberulent, 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 compact), axis 0.5–1 cm, 1+ mm diam., gray-hairy; bracts appressed, scalelike (basalmost leaflike), awl-shaped, (concave when fresh), 3–4 mm, apex acute, surfaces glabrous. |
Pedicels | 4–10 mm, tomentose. |
2–6 mm, glabrous. |
Flowers | corolla white to pink, conic; ovary densely white-hairy. |
corolla white to pink, urceolate; ovary canescent. |
Fruits | depressed-globose, 5–10 mm diam., short white-hairy, glabrescent. |
globose, 6–8 mm diam., glabrous. |
Stones | distinct. |
distinct. |
2n | = 26. |
= 26. |
Arctostaphylos auriculata |
Arctostaphylos franciscana |
|
Phenology | Flowering winter–early spring. | Flowering winter–early spring. |
Habitat | Chaparral, open, closed-cone conifer forests | Maritime chaparral, serpentine 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. Formerly found in the northwestern portions of San Francisco, Arctostaphylos franciscana is now extirpated from the wild and survives only in cultivation. Arctostaphylos franciscana is in the Center for Plant Conservation’s National Collection of Endangered Plants as A. hookeri subsp. franciscana. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 8, p. 430. | FNA vol. 8, p. 425. |
Parent taxa | Ericaceae > subfam. Arbutoideae > Arctostaphylos | Ericaceae > subfam. Arbutoideae > Arctostaphylos |
Sibling taxa | ||
Synonyms | A. hookeri subsp. franciscana | |
Name authority | Eastwood: Bull. Torrey Bot. Club 32: 202. 1905 , | Eastwood: Bull. Torrey Bot. Club 32: 201. (1905) |
Web links |