. 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. long as the blades or less. The tree flowers in late February or early March; the axis of the racemes, the pedicels, and the ovate pointed ca- lyx-lobes are loosely hairy, becom- ing smooth when old; the top of the ovary is white-wooUy. The fruit is about 9 nmi. in diameter. 5. ROCKY MOUNTAIN SERVICE TREE Amelanchier alnifolia Nuttall Fig. 386. — Alabama Servicebeny. Amelanchier oreophila A. Nelson While nearly always a m
. 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. long as the blades or less. The tree flowers in late February or early March; the axis of the racemes, the pedicels, and the ovate pointed ca- lyx-lobes are loosely hairy, becom- ing smooth when old; the top of the ovary is white-wooUy. The fruit is about 9 nmi. in diameter. 5. ROCKY MOUNTAIN SERVICE TREE Amelanchier alnifolia Nuttall Fig. 386. — Alabama Servicebeny. Amelanchier oreophila A. Nelson While nearly always a mere shrub, this species occasionally develops, under favorable conditions, into a small tree with a maximum observed height of about 5 meters. It inhabits hillsides and the banks of lakes and streams from western Ontario to the valley of the Yukon River, Nebraska, New Mexico, and Nevada. The young twigs are loosely hairy, soon becoming smooth and gray-brown to reddish brown; the vrinter buds are oblong, 4 or 5 mm. long, their scales smooth or somewhat hairy. The leaves are pale green, usually more or less hairy when young, becoming smooth or nearly so, and firm in texture when mature; they vary from nearly orbic- ular to elliptic or obovate-elliptic and from 2 to 5 cm. long seldom twice as long as wide, and are rather coarsely and sharply toothed toward the apex, the serrations sometimes extending below the middle; their stalks are hairy of smooth and usually less than half as long as the blades. The flowers are in short, loosely hairy, or nearly smooth racemes, and open in May or Jime, when the leaves are nearly fully grown in size, though they become much thicker later in the sea- son; the calyx-lobes are lanceolate to ovate-lanceolate, pointed, hairy, becoming smooth; the petals are linear, oblong- linear or oblanceolate, 8 to 16 mm. long. The fruit is dark blue, about i cm. in diameter, juicy and Fig. 387. — Rocky Mountain Service Please note that these
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