Arctostaphylos confertiflora


Leafl. W. Bot. 1: 122. 1934 ,.

Common names: Santa Rosa Island manzanita
EndemicConservation concern
Synonyms: Arctostaphylos subcordata var. confertiflora (Eastwood) Munz
Treatment appears in FNA Volume 8. Treatment on page 428. Mentioned on page 414.

Shrubs, erect, prostrate, or mound-forming, 0.1–2 m; burl absent; twigs densely short-hairy with long, white, glandular hairs. Leaves (overlapping); petiole 4–10 mm; blade light green, dull, ovate to elliptic, 4–6 × 2–3 cm, base cuneate to ± rounded, margins entire, cupped, surfaces ± papillate, finely scabrous, glandular-puberulent, ± glandular-hairy proximally. Inflorescences panicles, 3–5-branched; immature inflorescence pendent, branches spreading, axis 1.5–2 cm, 1+ mm diam., densely short-hairy with long, white, glandular hairs; bracts not appressed, (crowded), (± densely overlapping near tips), (green), leaflike, ovate to oblanceolate, 8–18 mm, apex acute, surfaces finely glandular-hairy. Pedicels 3–5 mm, finely glandular-hairy. Flowers: corolla white, conic to urceolate; ovary densely white-hairy, sparsely glandular. Fruits depressed-globose, 8–11 mm diam., sparsely hairy. Stones distinct. 2n = 26.

Phenology: Flowering winter–early spring.
Habitat: Island chaparral, open, closed-cone conifer forests
Elevation: 0-500 m


Of conservation concern.

Arctostaphylos confertiflora is found on Santa Rosa Island.

Selected References


Lower Taxa

V. Thomas Parker +, Michael C. Vasey +  and Jon E. Keeley +
Eastwood +
Santa Rosa Island manzanita +
0-500 m +
Island chaparral, open, closed-cone conifer forests +
Flowering winter–early spring. +
Leafl. W. Bot. +
Endemic +  and Conservation concern +
Arctostaphylos subcordata var. confertiflora +
Arctostaphylos confertiflora +
Arctostaphylos +
species +