Arctostaphylos viscida


Bull. Calif. Acad. Sci. 2: 492. 1887 ,.

Common names: Sticky whiteleaf manzanita
Treatment appears in FNA Volume 8. Treatment on page 423. Mentioned on page 411, 429, 430.

Shrubs, erect, 1–3 m; burl absent; twigs glabrous, sparsely short-hairy, or densely glandular-hairy. Leaves: petiole 5–12 mm; blade white-glaucous, dull, ovate to ± orbiculate, 2–5 × 2–4 cm, base rounded, truncate, or ± lobed, margins entire or ciliate, plane, surfaces smooth-papillate, rough, scabrous, glabrous or sparsely puberulent. Inflorescences panicles, 4–7-branched; immature inflorescence pendent or ascending, branches spreading, axis 1–3 cm, 1+ mm diam., densely glandular, (sticky); bracts appressed, (glaucous), scalelike, deltate, 3–4 mm, apex acute to acuminate, surfaces viscid-glandular (rarely minutely stipitate-glandular) or glandular-hairy, especially along margins. Pedicels 6–10 mm, finely to densely glandular-hairy. Flowers: corolla white, conic to urceolate; ovary glabrous or glandular-hairy. Fruits depressed-globose, 6–8 mm diam., glabrous or sparsely to densely glandular-hairy, (sometimes viscid). Stones distinct.


Subspecies 3 (3 in the flora).

Arctostaphylos viscida is distributed widely in the Sierra Nevada and northern Coast Ranges of California and the Cascade Mountains in southern Oregon. The subspecies occasionally occur in mixed populations, especially subspp. viscida and mariposa.

Selected References



1 Twigs densely glandular-hairy; leaf blades sparsely short glandular-hairy. Arctostaphylos viscida subsp. mariposa
1 Twigs and leaf blades glabrous (except sometimes near inflorescence) > 2
2 Ovaries and fruits smooth, glabrous, not viscid. Arctostaphylos viscida subsp. viscida
2 Ovaries and fruits rough, densely glandular, viscid. Arctostaphylos viscida subsp. pulchella