Arctostaphylos montereyensis
Arctostaphylos manzanita
Monterey manzanita, toro manzanita
common manzanita, whiteleaf manzanita
petiole 4–6 mm;
blade light green, reddish, or slightly glaucous, dull, orbiculate-ovate to orbiculate, 2–3 × 1.5–3 cm, base rounded, truncate, or slightly lobed, margins entire, plane, surfaces papillate, scabrous, 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, 4–10-branched;
immature inflorescence pendent, branches crowded, axis 1–2 cm, 1+ mm diam., densely glandular-hairy;
bracts not appressed, (green), leaflike, lanceolate, 3–12 mm, apex acuminate, surfaces glandular-hairy.
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.
5–6 mm, finely glandular-hairy.
3–8 mm, glabrous.
corolla white, urceolate;
ovary glandular-hairy.
corolla white, conic to urceolate;
ovary glabrous or minutely stipitate glandular-hairy.
depressed-globose, 8–12 mm diam., finely glandular-hairy, (viscid).
depressed-globose, 8–12 mm diam., hairy or glabrous, stipitate-glandular or smooth.
distinct or partially connate.
distinct, sometimes connate.
= 26.
Arctostaphylos montereyensis
Arctostaphylos manzanita
Of conservation concern.
Arctostaphylos montereyensis is known from sandy soils, ranging from dunes to sandstone outcrops, in the southern Monterey Bay area, Monterey County. Plants found on Fort Ord with auriculate leaf bases and blue-green leaves may represent hybrids with A. pajaroensis.
(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
WildflowerSearch
iNaturalist
USDA Plants Database
