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FNA | Family List | FNA Vol. 8 | Ericaceae | Arctostaphylos

48. Arctostaphylos viridissima (Eastwood) McMinn, Man. Calif. Shrubs. 419. 1939.

Whitehair manzanita

Arctostaphylos pechoensis (Abrams) Dudley ex Eastwood var. viridissima Eastwood, Leafl. W. Bot. 1: 62. 1933

Shrubs, erect, 1-4 m; burl absent; twigs short-hairy with longer, white hairs. Leaves: petiole 1-4 mm; blade dark green, shiny, narrowly ovate to oblong-ovate, 2-3.5 × 1.5-2.5 cm, base truncate to ± auriculate-clasping, margins entire, plane, surfaces smooth, puberulent, glabrescent. Inflorescences racemes, simple or 1-branched; immature inflorescence pendent, (branches ± concealed by bracts), axis 1-1.5 cm, 1+ mm diam., short-hairy with long, white hairs; bracts not appressed, (crowded), leaflike, lanceolate, 6-10 mm, apex acute, surfaces lightly hairy. Pedicels 2-3 mm, sparsely hairy. Flowers: corolla white, conic to urceolate; ovary densely white-hairy. Fruits subglobose, 10-15 mm diam., sparsely hairy or glabrous. Stones distinct. 2n = 26.

Flowering winter-early spring. Island chaparral, open forests; of conservation concern; 100-600 m; Calif.

Arctostaphylos viridissima is known from siliceous shale on the eastern part of Santa Cruz Island.


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