Arctostaphylos sensitiva |
Arctostaphylos insularis |
|
---|---|---|
coinleaf manzanita, dwarf manzanita, glossyleaf manzanita |
island manzanita |
|
Habit | Shrubs, erect or mound-forming, 1–2 m; burl absent; bark on older stems red, smooth; twigs densely short-haired with longer gland-tipped hairs. | Shrubs, erect, (arborescent), 2–5 m; burl absent; (lower stems reddish with glaucous patches); twigs glabrous, sometimes sparsely short-hairy or sparsely glandular-hairy. |
Leaves | bifacial in stomatal distribution; petiole 1–3 mm; blade light green abaxially, dark green adaxially, shiny, orbiculate to orbiculate-ovate, 1–2.2 × 0.8–1.8 cm, base truncate to ± lobed, margins entire, cupped, surfaces smooth, glabrous, midvein hairy. |
bifacial in stomatal distribution; petiole 4–8 mm; blade bright green, lustrous, oblong-elliptic, 2.5–4.5 × 1–3 cm, base rounded, margins entire, ± cupped, surfaces smooth, glabrous. |
Inflorescences | panicles, 4–8-branched; immature inflorescence pendent, branches spreading, axis 0.5–1 cm, to 1 mm diam., densely short-hairy with longer gland-tipped hairs; bracts appressed, scalelike, deltate, 0.5–2 mm, apex acute, surfaces glabrous. |
panicles, 5–10-branched; immature inflorescence pendent, branches spreading, ascending, or erect, axis 2–3 cm, 1+ mm diam., glabrous, sometimes sparsely short-hairy or sparsely glandular-hairy, (buds ± spread apart); bracts not appressed, scalelike, deltate, 1.5–3 mm, apex acute, surfaces finely glandular-hairy. |
Pedicels | 3–5 mm, glabrous. |
6–9 mm, finely glandular-hairy. |
Flowers | 4-merous; corolla white to pink, urceolate; ovary white-hairy. |
corolla white, conic to urceolate; ovary glabrous or sparsely glandular-hairy. |
Fruits | subcylindric, 3–4 mm diam., glabrous. |
depressed-globose, 8–15 mm diam., sparsely hairy or glabrous. |
Stones | distinct (breaking apart in mature fruit). |
distinct. |
2n | = 26. |
= 26. |
Arctostaphylos sensitiva |
Arctostaphylos insularis |
|
Phenology | Flowering winter–early spring. | Flowering winter–early spring. |
Habitat | Sandstone uplands in maritime chaparral or closed-cone conifer forests near coast | Island chaparral and woodlands |
Elevation | 100-600 m (300-2000 ft) | 200-400 m (700-1300 ft) |
Distribution |
CA
|
CA
|
Discussion | Of conservation concern. Arctostaphylos sensitiva occurs in Marin, San Mateo, and Santa Cruz counties. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Of conservation concern. Arctostaphylos insularis is known from Santa Cruz Island. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 8, p. 418. | FNA vol. 8, p. 422. |
Parent taxa | Ericaceae > subfam. Arbutoideae > Arctostaphylos | Ericaceae > subfam. Arbutoideae > Arctostaphylos |
Sibling taxa | ||
Synonyms | A. nummularia subsp. sensitiva, A. nummularia var. sensitiva | A. insularis var. pubescens |
Name authority | Jepson: Madroño 1: 85. 1922 , | Greene ex Parry: Bull. Calif. Acad. Sci. 2: 494. 1887 , |
Web links |