Arctostaphylos pilosula
Arctostaphylos tomentosa
La Panza manzanita, Santa Margarita manzanita
woolly leaf manzanita
petiole 4–8 mm;
blade dark green to gray-glaucous, dull, narrowly elliptic to orbiculate-ovate, 1–3 × 1–2 cm, base cuneate or truncate to slightly lobed, margins entire, plane, surfaces smooth, glabrous.
bifacial in stomatal distribution;
petiole 2–5 mm;
blade dark to bright green, dull abaxially, ± shiny adaxially, oblong-ovate to oblong-lanceolate, 2–5 × 1.5–2.5 cm, base truncate to ± lobed, margins entire, sometimes toothed, cupped or ± rolled, (distal portion glabrous, proximal tomentose), surfaces short-hairy or glabrous abaxially, papillate, scabrous, sometimes finely glandular-hairy or ± glabrous adaxially.
racemes, simple or 1-branched;
immature inflorescence pendent, axis 1–2 cm, 1+ mm diam., short-hairy with long hairs;
bracts not appressed, (green), leaflike, lanceolate, 8–15 mm, apex acute, surfaces long-hairy.
panicles, 2–8-branched;
immature inflorescence pendent, axis 1–2.5 cm, 1+ mm diam., usually short-hairy, sometimes with long hairs and glandular hairs;
bracts not appressed, leaflike, lanceolate, 8–15 mm, apex acute, surfaces glabrous, hairy, or finely glandular-hairy.
2–5 mm, glabrous.
2–5 mm, sparsely hairy, sometimes glandular, or hairy.
corolla white to pink, urceolate;
ovary glabrous.
corolla white, conic to urceolate;
ovary white-hairy and sometimes sparsely glandular.
depressed-globose, 8–10 mm diam., glabrous.
depressed-globose, 6–10 mm diam., sparsely hairy or glabrous.
distinct.
distinct.
= 26.
Arctostaphylos pilosula
Arctostaphylos tomentosa
Of conservation concern.
Arctostaphylos pilosula occurs in San Luis Obispo County and exhibits some variation in leaf shape and color, as well as indument. Plants at higher elevations and farther inland may reflect introgression with A. glauca. Some lower-elevation populations historically have been segregated as subsp. pismoensis or A. wellsii. Field observation suggests that there is a morphological cline between coastal and interior populations so that taxonomic distinctions between these populations are unwarranted. Further taxonomic analysis might help to resolve this situation.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
Subspecies 4 (4 in the flora).
Arctostaphylos tomentosa is found in coastal central California, in areas that receive summer fog. Most subspecies are narrowly distributed.
(Discussion copyrighted by Flora of North America; reprinted with permission.)
1. Twigs densely glandular-hairy | subsp. bracteosa |
1. Twigs eglandular | → 2 |
2. Twigs short-hairy and with long, white hairs. | subsp. daciticola |
2. Twigs short-hairy | → 3 |
3. Leaf blades tomentose abaxially (at least younger leaves). | subsp. tomentosa |
3. Leaf blades glabrous abaxially. | subsp. hebeclada |
CA
WildflowerSearch
iNaturalist
USDA Plants Database
