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Acer
633
three-nerved at the rounded base; under surface glaucous, glabrous, without axil- tufts. Petiole without latex. Young branchlets slightly pubescent.
- A young tree is growing vigorously at Kew.
- 10. Acer cratægifolium, Siebold et Zuccarini. Japan.
- Leaves 3 inches long, coriaceous, ovate, cordate at the base, acuminate at the apex, usually with two short lateral lobes, occasionally undivided, dark-green and shining above, pale and glabrous beneath. Petiole without latex. Bark striate.
- A small tree, attaining about 20 feet in height, pyramidal in habit. Introduced by Maries in 1881. Var. Veitchii is variegated with irregular blotches of pink and white.
- 11, Acer ginnala, Maximowicz. Amurland, Southern Mongolia, China, Japan.
- Leaves 3 inches long, 2½ inches wide; terminal lobe elongated; under surface bright-green, scattered pubescent or glabrescent, without axil-tufts. Petiole without latex.
- A small tree, with leaves assuming in autumn a brilliant red tint. Var. Semenovii, from Turkestan, has smaller leaves, occasionally five-lobed.
*** Leaves regularly bi-serrate.
- 12. Acer pennsylvanicum, Linnæus. North America.
- Leaves (Plate 206, Fig. 13) 7 inches long, 6 inches wide; lobes arising from the upper part of the leaf, triangular, acuminate; under surface with scattered minute pubescence ; petiole without latex. Young branchlets not glaucous.
- Introduced in 1759, and remarkable for its striated bark, green branchlets, and fruit in drooping long racemes. It rarely attains a height of 4o feet.
- 13. Acer rufinerve, Siebold et Zuccarini. Japan.
- Leaves 3½ inches long, 3 inches wide, resembling in shape those of A. pennsylvanicum, but smaller, and with reddish pubescence along the sides of the primary nerves, forming axil-tufts. Racemes erect and reddish-tomentose. Young branchlets glaucous.
- This is the representative in Japan of A. pennsylvanicum, which it resembles in bark, habit, and size. The type was introduced by Maries in 1881, and there are thriving small specimens at Kew. A variety, with the leaves white on the margin, was exhibited by Standish in 1869 at the Horticultural Society, and was figured in the Botanical Magazine, t. 5793.
- 14. Acer capillipes, Maximowicz. Japan.
- This species strongly resembles the last, but differs in the glabrous leaves, and non-glaucous young branchlets ; racemes glabrous, pedicels long.
- A small tree or shrub, introduced by Sargent in 1892, and represented at Kew by a thriving young specimen. The autumn tint is purplish-brown, suffused with yellow along the nerves.
- 15. Acer spicatum, Lamarck. North America.
- Leaves about 3½ inches long and wide, broadly ovate, acuminate, ciliate in margin, glabrous above, pubescent beneath. Petioles and young branchlets pubescent.
