Arctostaphylos morroensis

Wieslander & B. Schreiber

Madroño 5: 42, fig. 2a. 1939 ,.

Common names: Morro manzanita
EndemicConservation concern
Treatment appears in FNA Volume 8. Treatment on page 432. Mentioned on page 406, 410.

Shrubs, erect or mound-forming, 1–4 m; burl absent; bark on older stems persistent, gray, shredded; twigs short-hairy with long, white 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. 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. Pedicels 4–6 mm, hairy or glabrous. Flowers: corolla white, urceolate; ovary densely white-hairy. Fruits depressed-globose, 7–10 mm diam., sparsely hairy. Stones distinct. 2n = 26.

Phenology: Flowering winter–early spring.
Habitat: Maritime chaparral on sandy soils near coast
Elevation: 0-100 m


Of conservation concern.

Arctostaphylos morroensis is known from the Morro Bay region in San Luis Obispo County.

Selected References


Lower Taxa

... more about "Arctostaphylos morroensis"
V. Thomas Parker +, Michael C. Vasey +  and Jon E. Keeley +
Wieslander & B. Schreiber +
Morro manzanita +
0-100 m +
Maritime chaparral on sandy soils near coast +
Flowering winter–early spring. +
Endemic +  and Conservation concern +
Undefined tribe Arbuteae +
Arctostaphylos morroensis +
Arctostaphylos +
species +