Arctostaphylos morroensis |
Arctostaphylos nummularia |
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Morro manzanita |
glossyleaf manzanita, pygmy manzanita, shatterberry |
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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, prostrate, erect, or mound-forming, 0.1–5 m; burl absent; bark on older stems persistent, gray or red-gray, shredded or rough; twigs densely short-haired with longer gland-tipped hairs. | ||||
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. |
bifacial in stomatal distribution; petiole to 3 mm; blade bifacial, light green abaxially, dark green adaxially, shiny, orbiculate to orbiculate-ovate or oblong-elliptic, 1.5–2.2 × 0.3–1.8 cm, base cuneate to obtuse or truncate to ± lobed, margins entire, cupped, surfaces smooth, glabrous, midvein hairy. |
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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, 4–12-branched; immature inflorescence pendent, branches spreading, axis 0.5–1 cm, to 1 mm diam., densely short-haired with longer gland-tipped hairs; bracts appressed, scalelike, deltate, 0.5–2 mm, apex acute, surfaces glabrous. |
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Pedicels | 4–6 mm, hairy or glabrous. |
3–5 mm, glabrous. |
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Flowers | corolla white, urceolate; ovary densely white-hairy. |
4-merous; corolla white, urceolate; ovary white-hairy. |
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Fruits | depressed-globose, 7–10 mm diam., sparsely hairy. |
subcylindric, 3–4 mm diam., glabrous. |
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Stones | distinct. |
distinct (breaking apart in mature fruit). |
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2n | = 26. |
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Arctostaphylos morroensis |
Arctostaphylos nummularia |
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Phenology | Flowering winter–early spring. | |||||
Habitat | Maritime chaparral on sandy soils near coast | |||||
Elevation | 0-100 m (0-300 ft) | |||||
Distribution |
CA
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CA
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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.) |
Subspecies 2 (2 in the flora). (Discussion copyrighted by Flora of North America; reprinted with permission.) |
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Key |
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Source | FNA vol. 8, p. 432. | FNA vol. 8, p. 418. | ||||
Parent taxa | Ericaceae > subfam. Arbutoideae > Arctostaphylos | Ericaceae > subfam. Arbutoideae > Arctostaphylos | ||||
Sibling taxa | ||||||
Subordinate taxa | ||||||
Name authority | Wieslander & B. Schreiber: Madroño 5: 42, fig. 2a. 1939 , | A. Gray: Proc. Amer. Acad. Arts 7: 366. 1868 , | ||||
Web links |