Arctostaphylos manzanita
Arctostaphylos nummularia
common manzanita, whiteleaf manzanita
glossyleaf manzanita, pygmy manzanita, shatterberry
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.
bifacial in stomatal distribution;
petiole to 3 mm;
blade bifacial, light green abaxially, dark green adaxially, shiny, orbiculate to orbiculate-ovate or oblong-elliptic, 1.5–2.2 × 0.3–1.8 cm, base cuneate to obtuse or truncate to ± lobed, margins entire, cupped, surfaces smooth, glabrous, midvein 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.
panicles, 4–12-branched;
immature inflorescence pendent, branches spreading, axis 0.5–1 cm, to 1 mm diam., densely short-haired with longer gland-tipped hairs;
bracts appressed, scalelike, deltate, 0.5–2 mm, apex acute, surfaces glabrous.
3–8 mm, glabrous.
3–5 mm, glabrous.
corolla white, conic to urceolate;
ovary glabrous or minutely stipitate glandular-hairy.
4-merous;
corolla white, urceolate;
ovary white-hairy.
depressed-globose, 8–12 mm diam., hairy or glabrous, stipitate-glandular or smooth.
subcylindric, 3–4 mm diam., glabrous.
distinct, sometimes connate.
distinct (breaking apart in mature fruit).
Arctostaphylos manzanita
Arctostaphylos nummularia
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.)
Subspecies 2 (2 in the flora).
(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 |
1. Plants 0.5-5 m; bark on older stems gray, shredded. | subsp. nummularia |
1. Plants 0.1-0.5 m; bark on older stems gray or reddish, rough or shredded. | subsp. mendocinoensis |
CA
WildflowerSearch
iNaturalist
USDA Plants Database
