Arctostaphylos sensitiva |
Arctostaphylos pungens |
|
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coinleaf manzanita, dwarf manzanita, glossyleaf manzanita |
Mexican manzanita, pointleaf 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, 1–3 m; burl absent; bark on older stems persistent, reddish, smooth; twigs sparsely short-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. |
erect; petiole 4–8 mm; blade bright or dark green, shiny, elliptic to lanceolate-elliptic, 1.5–4 × 1–1.8 cm, base obtuse to cuneate, sometimes rounded, margins entire, plane, surfaces smooth, finely tomentose, glabrescent. |
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. |
racemes, simple or 1-branched; immature inflorescence pendent, axis 0.5–1.5 cm, 1+ mm diam., sparsely short-hairy; bracts recurved and crowded at tip, (light green), scalelike, ovate-deltate, (clublike), 2–4 mm, apex acuminate, surfaces glabrous. |
Pedicels | 3–5 mm, glabrous. |
5–10 mm, glabrous. |
Flowers | 4-merous; corolla white to pink, urceolate; ovary white-hairy. |
corolla white, conic to urceolate; ovary glabrous. |
Fruits | subcylindric, 3–4 mm diam., glabrous. |
depressed-globose, 5–8 mm diam., glabrous. |
Stones | distinct (breaking apart in mature fruit). |
distinct. |
2n | = 26. |
= 26. |
Arctostaphylos sensitiva |
Arctostaphylos pungens |
|
Phenology | Flowering winter–early spring. | Flowering winter–early summer. |
Habitat | Sandstone uplands in maritime chaparral or closed-cone conifer forests near coast | Open pine forests, pinyon-juniper woodlands, chaparral |
Elevation | 100-600 m (300-2000 ft) | 300-2600 m (1000-8500 ft) |
Distribution |
CA
|
AZ; CA; NM; NV; TX; UT; Mexico
|
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.) |
Arctostaphylos pungens is one of the most widespread species in western North America, and extends south to Oaxaca, Mexico. In most western states, it is found in open pine forests and pinyon-juniper woodlands, generally at higher elevations. In California, it is a chaparral species that occurs in desert and peninsular ranges of southern California mountains and has three disjunct populations in central California in San Benito and Monterey counties. These disjunct populations have been given other names, A. benitoensis and A. pseudopungens, but overall populations are A. pungens. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 8, p. 418. | FNA vol. 8, p. 416. |
Parent taxa | Ericaceae > subfam. Arbutoideae > Arctostaphylos | Ericaceae > subfam. Arbutoideae > Arctostaphylos |
Sibling taxa | ||
Synonyms | A. nummularia subsp. sensitiva, A. nummularia var. sensitiva | A. benitoensis, A. pseudopungens |
Name authority | Jepson: Madroño 1: 85. 1922 , | Kunth: in A. von Humboldt et al., Nov. Gen. Sp. 3(fol.): 218: plate 259. 1819 , |
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