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

8. Arctostaphylos hookeri G. Don, Gen. Hist. 3: 836. 1834.

Hooker’s manzanita Hooker’s manzanita

Shrubs, prostrate or erect, mat- or mound-forming, 0.1-1.5 m; burl absent; bark on older stems persistent, reddish, smooth; twigs sparsely short-hairy. Leaves: petiole 1-8 mm; blade bright green, shiny, narrow-elliptic (rhombic) or lanceolate-elliptic to widely elliptic, 0.8-3 × 0.4-1.5 cm, base rounded to cuneate, margins entire, plane, surfaces smooth, ± puberulent, glabrescent . Inflorescences racemes, simple or 1-branched; immature inflorescence pendent (crook-necked), axis 0.3-1 cm, 1+ mm diam., sparsely short-hairy; bracts not appressed, (weakly spreading), (congested), (dark green), scalelike, deltate, (globose, cuplike), 2-5 mm, apex acute, surfaces glabrous. Pedicels 2-6 mm, glabrous. Flowers: corolla white, urceolate; ovary glabrous. Fruits globose, 3-6 mm diam., glabrous. Stones distinct. 2n = 26.

Subspecies 2 (2 in the flora): California.


1 Plants erect or mound-forming; leaf blades ± elliptic, 2-3 × 1-1.5 cm; petioles 4-8 mm; Monterey Bay area.   8a Arctostaphylos hookeri subsp. hookeri
+ Plants prostrate, mat-forming; leaf blades narrow-elliptic (diamond-shaped), 0.8-1.2 × 0.4-0.7 cm; petioles 1-3 mm; San Luis Obispo County.   8b Arctostaphylos hookeri subsp. hearstiorum

Lower Taxa


 

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