. North American trees : being descriptions and illustrations of the trees growing independently of cultivation in North America, north of Mexico and the West Indies . Trees. California Hazelnut 245 III. CAtlFORNIA HAZELNUT GENUS CORYLUS [TOURNEFORT] LINN^US Species Coiylus californica (A. de Candolle) Rose Corylus rostrata var. californica A. de Candolle HIS is an under shrub or small tree of wooded hillsides, from middle California northward through Oregon to Washington, attaining a height of 12 meters, with a trunk diameter of dm. The twigs are slender and round, with long, often glandu
. North American trees : being descriptions and illustrations of the trees growing independently of cultivation in North America, north of Mexico and the West Indies . Trees. California Hazelnut 245 III. CAtlFORNIA HAZELNUT GENUS CORYLUS [TOURNEFORT] LINN^US Species Coiylus californica (A. de Candolle) Rose Corylus rostrata var. californica A. de Candolle HIS is an under shrub or small tree of wooded hillsides, from middle California northward through Oregon to Washington, attaining a height of 12 meters, with a trunk diameter of dm. The twigs are slender and round, with long, often glandular hairs, but become nearly smooth with age and red-brown or dark gray. The buds are small, blunt, and covered with densely hairy scales. The leaves are alternate, firm, broadly ovate to nearly orbicular, to 7 cm. long, sharp or shghtly taper- pointed, heart-shaped or rounded at the base, incised and toothed or doubly toothed on the margin, dark green, rough, and somewhat hairy above, paler and softly hairy beneath, the venation prominent on both surfaces; leaf-stalk slender, very hairy, 6 to 8 mm. long. The flowers are monoecious, the staminate on twigs of the previous season in cylindric drooping very haiiy-scaled catkins, 3 to 4 cm. long; the 4 to 8 stamens are inserted on a hairy receptacle with 2 bracts, the fila- ments short, 2-forked, each with a hairy- tipped anther-sac. The pistillate flowers are borne on short branchlets of the sea- son's growth, in short, erect clusters, each bract protecting an incompletely 2-celled ovary joined to the calyx; the 2 styles are short, erect, supporting a slender stigma; the 2 bractlets unite and grow into a short, tubular beaked, bristly in- volucre enclosing the fruit, which is an ovoid nut, about cm. in diameter, with a thick, hard bony dark brown shell, en- closing a sweet oily edible seed. It dif- ers from the Beaked hazelnut, Corylus rostrata Aiton, a common northern shrub, « r^^^NAlCKOvi^ T which at the north extends a
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