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FNA | Family List | FNA Vol. 8 | Ericaceae | Arctostaphylos

60. Arctostaphylos tomentosa (Pursh) Lindley, Edwards’s Bot. Reg. 21: plate 1791. 1835.

Woollyleaf manzanita

Arbutus tomentosa Pursh, Fl. Amer. Sept. 1: 282. 1813

Shrubs, erect or mound-forming, 1-3 m; burl present; bark of older stems persistent, gray, shredded; twigs usually short-hairy, some-times with long hairs and glandular hairs. Leaves 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. Inflorescences panicles, 2-8-branched; immature inflorescence pen-dent, 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. Pedicels 2-5 mm, sparsely hairy, sometimes glandular, or hairy. Flowers: corolla white, conic to urceolate; ovary white-hairy and sometimes sparsely glandular. Fruits depressed-globose, 6-10 mm diam., sparsely hairy or glabrous. Stones distinct.

Subspecies 4 (4 in the flora): California.

Arctostaphylos tomentosa is found in coastal central California, in areas that receive summer fog. Most subspecies are narrowly distributed.

1 Twigs densely glandular-hairy   60b Arctostaphylos tomentosa subsp. bracteosa
+ Twigs eglandular   (2)
2 (1) Twigs short-hairy and with long, white hairs.   60c Arctostaphylos tomentosa subsp. daciticola
+ Twigs short-hairy   (3)
3 (2) Leaf blades tomentose abaxially (at least younger leaves).   60a Arctostaphylos tomentosa subsp. tomentosa
+ Leaf blades glabrous abaxially.   60d Arctostaphylos tomentosa subsp. hebeclada

Lower Taxa


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