Arctostaphylos morroensis |
Arctostaphylos hispidula |
|
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Morro manzanita |
Gasquet manzanita, Howell's manzanita |
|
Habit | Shrubs, erect or mound-forming, 1–4 m; burl absent; bark on older stems persistent, gray, shredded; twigs short-hairy with long, white hairs. | Shrubs, erect or mound-forming, 1–3 m; burl absent; twigs finely glandular-hairy. |
Leaves | bifacial in stomatal distribution; petiole 2–5 mm; blade dull gray abaxially, dark green, ± shiny adaxially, oblong-ovate to oblong-elliptic, 1.5–3 × 1–2 cm, base subcordate to ± truncate (sometimes with vestigial auricles), margins entire, cupped, abaxial surface smooth, densely tomentose, adaxial surface smooth, glabrous. |
petiole 3–6 mm; blade dark green, dull, elliptic to oblanceolate, 1–3 × 0.5–1.5 cm, base cuneate, margins entire, plane, surfaces scabrous, papillate, finely glandular-hairy. |
Inflorescences | panicles, 2–5-branched; immature inflorescence pendent, (branches congested, bell-shaped, partly framed by bracts), axis 0.5–0.8 cm, 1+ mm diam., short-hairy with long, white hairs; bracts not appressed, leaflike, linear-lanceolate, 5–8 mm, apex acuminate, surfaces puberulent. |
panicles, 3–6-branched; immature inflorescence pendent, branches spreading or ascending to erect, axis 1–2 cm, to 1 mm diam., finely glandular-hairy; bracts tightly appressed, scalelike, awl-like, 2–4 mm (equaling buds), apex acuminate, surfaces finely glandular-hairy; (buds scattered along inflorescence axis, round, appearing as “beads”). |
Pedicels | 4–6 mm, hairy or glabrous. |
3–5 mm, glabrous. |
Flowers | corolla white, urceolate; ovary densely white-hairy. |
corolla white, urceolate; ovary glabrous. |
Fruits | depressed-globose, 7–10 mm diam., sparsely hairy. |
subglobose, 5–7 mm diam., glabrous. |
Stones | distinct. |
distinct. |
2n | = 26. |
= 26. |
Arctostaphylos morroensis |
Arctostaphylos hispidula |
|
Phenology | Flowering winter–early spring. | Flowering winter–early spring. |
Habitat | Maritime chaparral on sandy soils near coast | Serpentine chaparral and open forests on sandstone |
Elevation | 0-100 m (0-300 ft) | 100-1100 m (300-3600 ft) |
Distribution |
CA
|
CA; OR
|
Discussion | Of conservation concern. Arctostaphylos morroensis is known from the Morro Bay region in San Luis Obispo County. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Arctostaphylos hispidula is known from Josephine County, Oregon, and adjacent California in Del Norte and Humboldt counties; there is an isolated population in northern Sonoma County, California. (Discussion copyrighted by Flora of North America; reprinted with permission.) |
Source | FNA vol. 8, p. 432. | FNA vol. 8, p. 420. |
Parent taxa | Ericaceae > subfam. Arbutoideae > Arctostaphylos | Ericaceae > subfam. Arbutoideae > Arctostaphylos |
Sibling taxa | ||
Synonyms | A. stanfordiana subsp. hispidula | |
Name authority | Wieslander & B. Schreiber: Madroño 5: 42, fig. 2a. 1939 , | Howell: Fl. N.W. Amer., 415. 1901 , |
Web links |