. 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. MacDougal's Oak 319 are broadly ovoid, bluntish-pointed, about mm. long and bright brown. The leaves are obovate or broadly oblanceolate, 4 to 12 cm. long, shallowly 3 to 7- lobed, the apex blunt or notched, tapering or wedge-shaped at the base, rather thin, dark green or bluish, shining, with raised pale narrow midrib above, densely finely hairy and silvery gray beneath, persistent until just before the new leaves im
. 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. MacDougal's Oak 319 are broadly ovoid, bluntish-pointed, about mm. long and bright brown. The leaves are obovate or broadly oblanceolate, 4 to 12 cm. long, shallowly 3 to 7- lobed, the apex blunt or notched, tapering or wedge-shaped at the base, rather thin, dark green or bluish, shining, with raised pale narrow midrib above, densely finely hairy and silvery gray beneath, persistent until just before the new leaves imfold; the leaf-stalk is 4 to 10 mm. long. The flowers appear in March or April, the staminate in short hairy catkins, their calyx hairy and yellow, its lobes short and broad; stamens 5 to 7, exserted, their anthers broadly oblong, notched, smooth and yellow. The pistillate flowers are on short woolly stalks, their involucral scales hairy; styles short, spreading and dull red. The fruit is sessile or nearly so; nut oblong, 10 to 15 mm. long; cup saucer-shaped, 10 to 15 mm. across, em- bracing about one fourth to one third of the nut, the scales close. The wood is hard and strong but brittle, close-grained and brown. It has been confused with Durand's oak, from which it differs in its broader, usually more lobed and longer persistent leaves, and in the deeper cup of the acorn. The older binomial Quercus San SabcBana Buckley may be the proper name for this tree. 36. MACDOUGAL'S OAK — Quercus paucaoba Rydberg This Uttle known species is reported only from central Arizona, where it grows in rich soil along the banks of streams and attains a height of 5 meters. It has light gray bark, somewhat hairy, Ught brown to gray twigs, and small brown buds. The leaves are oval, ovate or rarely obovate in outline, S to 8 cm. long; the 5 to 7 lobes are triangu- lar-ovate, blunt or sometimes bristle-pointed or slightly toothed; the sinuses are broad, rather deep, rounded at the bottom; the base
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