Æ. rubicúnda.
Æsculus rubicunda (Red-flowering Horse-chestnut) is frequent in cultivation; leaflets 5 to 7, red-spotted and rough; flowers rosy red. It is probably a hybrid between the common Horse-chestnut and one of the Buckeyes.
Æ glàbra.
2. Æsculus glàbra, Willd. (Ohio Buckeye.) Leaves with 5 oval-oblong, acuminate, serrate, smooth leaflets. Flowers not showy, yellowish-white, with 4 somewhat irregular, slightly spreading petals. June. Fruit small, 1 in. in diameter, covered with prickles, at least when young; ripe in autumn. Small to large tree, wild in the basin of the Ohio River, along river-banks. Sometimes cultivated.
Æ. Pàvia.
3. Æsculus Pàvia, L. (Red Buckeye.) Leaves of 5 to 7 oblong-lanceolate, finely serrate, generally smooth leaflets, of a shining green color, with purple veins and petioles. Flowers (corolla and calyx) bright red, with included stamens; corolla of 4 petals, not spreading; calyx tubular. Fruit smooth, oblong-obovate, 1 in. long. Small tree or shrub, 10 to 20 ft. high, with purple twigs. Virginia west and south, and occasionally cultivated throughout.