Arctostaphylos myrtifolia


Pittonia 1: 34. 1887 ,.

Common names: Ione manzanita
EndemicConservation concern
Treatment appears in FNA Volume 8. Treatment on page 415. Mentioned on page 411.

Shrubs, erect or mound-forming, 0.5–1.5 m; burl absent; bark on older stems persistent, dark red with translucent, grayish patches, smooth; twigs finely glandular-hairy. Leaves erect; petiole 1–3 mm; blade bright green, shiny, narrowly elliptic, 0.6–1.5 × 0.3–0.8 cm, base cuneate, margins entire, plane, surfaces rough, papillate, sparsely finely glandular-hairy. Inflorescences racemes, simple or 1-branched; immature inflorescence pendent, axis 0.5–1 cm, 1+ mm diam., finely glandular-hairy; bracts not appressed, scalelike, deltate, 1–2 mm, apex acuminate, surfaces glabrous. Pedicels 1–3 mm, glabrous. Flowers: corolla white, urceolate; ovary white-hairy. Fruits subcylindric, 3–4 mm diam., glabrous. Stones distinct, (breaking apart when mature). 2n = 26.

Phenology: Flowering winter–early spring.
Habitat: Exposed acidic, whitish, clay soils (oxisols)
Elevation: 30-200 m


Of conservation concern.

Arctostaphylos myrtifolia is known only from the lower Sierra Nevada foothills near Ione in the eastern part of the Central Valley.

Selected References


Lower Taxa