. 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. 658 The Buckeyes leathery valves which split when it is ripe to release the one to three large shin- ing seeds. Capsule spiny, at least when young; stamens exserted. Flowers white, mottled with yellow and purple; petals 5; intro- duced European tree. Flowers yellow or greenish yellow; petals 4; native tree. Capsule smooth; petals 4; native trees. Stamens much exserted; winter-buds resinous; California tree. Stamens includ
. 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. 658 The Buckeyes leathery valves which split when it is ripe to release the one to three large shin- ing seeds. Capsule spiny, at least when young; stamens exserted. Flowers white, mottled with yellow and purple; petals 5; intro- duced European tree. Flowers yellow or greenish yellow; petals 4; native tree. Capsule smooth; petals 4; native trees. Stamens much exserted; winter-buds resinous; California tree. Stamens included or but little exserted; winter-buds not resinous; eastern and southern trees. Calyx tubular, red or reddish. Leaflets densely tomentose beneath; seeds yellow-brown. Leaflets glabrate beneath; seeds dark brown. Calyx oblong-campanulate, greenish. 1. M. Hippocastanum. 2. ^. glabra. 3. M. calijornica. 4. ^. austrina, 5. M. Pavia. 6. jE. octandra. I. HORSECHESTNUT —^culns ffippocastanum Linnaeus The Horsechestnut, a native of Asia, has long been cultivated for shade and ornament in Europe and America, and it has escaped from cultivation locally in the eastern United States. It is a very large tree with spreading branches, sometimes at- taining a height of about 30 meters, with a trunk 2 meters in diameter. The bark of the old trees is i cm. thick or more, shallowly fissured into small irregular scaly dull brown plates. The young twigs are smooth, round, reddish brown, with large leaf scars, the large pointed buds very resinous- sticky. The long-stalked leaves are hairy when yoimg, but smooth or nearly so when old; there are 5 or 7 leaflets, dark green on the upper surface, paler green beneath; they are obovate or oblanceolate, i to 2 dm. long, abruptly pointed, irregularly finely toothed, wedge-shaped at the base. The flowers are - Horsechestnut. jjj j^rge clusters often 3 dm. long, at the ends of branches, and open in June or July; the axis of the cluster, the flc wer-stalks
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