Arctostaphylos hispidula
Arctostaphylos manzanita
Gasquet manzanita, Howell's manzanita
common manzanita, whiteleaf manzanita
petiole 3–6 mm;
blade dark green, dull, elliptic to oblanceolate, 1–3 × 0.5–1.5 cm, base cuneate, margins entire, plane, surfaces scabrous, papillate, finely glandular-hairy.
petiole 6–12 mm;
blade bright green or glaucous, shiny or dull, widely ovate or oblong-ovate to obovate, 2–5 × 1–3.5 cm, base rounded to ± cuneate, margins entire, plane, surfaces smooth or scabrous, puberulent or veins finely hairy.
panicles, 3–6-branched;
immature inflorescence pendent, branches spreading or ascending to erect, axis 1–2 cm, to 1 mm diam., finely glandular-hairy;
bracts tightly appressed, scalelike, awl-like, 2–4 mm (equaling buds), apex acuminate, surfaces finely glandular-hairy; (buds scattered along inflorescence axis, round, appearing as “beads”).
panicles, 3–7-branched;
immature inflorescence ± abruptly deflexed, branches spreading, axis 1.5–4.5 cm, 1+ mm diam., glabrous, sparsely short-hairy, or sparsely glandular-hairy, not viscid;
bracts not fully appressed, scalelike, deltate, 2–4 mm, apex mucronate or acuminate, surfaces glabrous or sparsely hairy to finely glandular-hairy.
3–5 mm, glabrous.
3–8 mm, glabrous.
corolla white, urceolate;
ovary glabrous.
corolla white, conic to urceolate;
ovary glabrous or minutely stipitate glandular-hairy.
subglobose, 5–7 mm diam., glabrous.
depressed-globose, 8–12 mm diam., hairy or glabrous, stipitate-glandular or smooth.
distinct.
distinct, sometimes connate.
= 26.
Arctostaphylos hispidula
Arctostaphylos manzanita
Arctostaphylos hispidula is known from Josephine County, Oregon, and adjacent California in Del Norte and Humboldt counties; there is an isolated population in northern Sonoma County, California.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Subspecies 6 (6 in the flora).
Arctostaphylos manzanita is usually found in northern California in oak woodlands, chaparral, and open conifer forests. Subspecies manzanita is widespread throughout the Sierra Nevada foothills, north through the Cascades, and at lower elevations in the North Coast Ranges. The other subspecies are generally narrowly distributed.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Burls present; plants resprouting after fire | subsp. roofii |
1. Burls absent; plants killed by fire | → 2 |
2. Leaf blades lightly to strongly glaucous-green (twigs sometimes sparsely glandular-hairy). | subsp. glaucescens |
2. Leaf blades dull to shiny green, not glaucous | → 3 |
3. Ovaries and fruits glandular-hairy; stones often connate into single sphere, sometimes distinct. | subsp. elegans |
3. Ovaries and fruits glabrous or white-hairy, eglandular; stones distinct | → 4 |
4. Twigs glandular-hairy; leaf blades dull green. | subsp. wieslanderi |
4. Twigs glabrous or sparsely short-hairy; leaf blades dull to bright, shiny green | → 5 |
5. Leaf blades dull to shiny green; inflorescence axes many-branched, 1 mm diam.; branches usually 15-25 mm in immature phase. | subsp. manzanita |
5. Leaf blades shiny green; inflorescence axes few-branched, 1+ mm diam.; branches to 15 mm in immature phase. | subsp. laevigata |
CA
OR
Flora NW
PNW Herbaria
WildflowerSearch
iNaturalist
USDA Plants Database
