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The Trees of Great Britain and Ireland
mentioned by Mr. J.H. Veitch, one of which, growing well at Mount Usher, Wicklow, Ireland, has deeply-cut leaves, figured on Plate 207, Fig. 29.
- 49. Acer Sieboldianum, Miquel. Japan.
- Leaves about 2 inches in length and breadth ; lobes usually nine, acuminate ; sinuses reaching nearly half the length of the blade; glabrous above with a tuft of hairs at the base; pubescent beneath on the main nerves. Young branchlets covered with dense white pubescence.
- A small tree or shrub, very rare in cultivation.
IX. Leaves compound ; leaflets three or five.
A. Leaflets entire in margin.
- 50. Acer Henryi,1 Pax. Central China.
- Leaflets three, narrowly elliptical, acuminate ; under surface green, pubescent on the midrib and lateral nerves, forming axil-tufts. Young branchlets pubescent.
- A small tree, attaining about 30 feet in height. Introduced by Wilson in 1900. Young plants at Coombe Wood are now about 1o feet high, and are hardy and thriving.
B. Leaflets serrate or toothed.
* Leaflets green beneath.
- 51. Acer Negundo, Linnæus. North America.
- Leaflets (Plate 205, Fig. 2) usually five, occasionally three; coarsely and irregularly toothed and serrate, sometimes three-lobed; under surface with scattered pubescence, dense on the primary and secondary nerves; petioles glabrous. Young branchlets glabrous, green or glaucous. (See description, p. 684.)
- 52. Acer Negundo, var. californicum, Wesmael. California.
- Leaflets (Plate 205, Fig. 1) three or five, resembling those of the last species, but with coarser teeth and serrations; lower surface covered with a dense white pubescence. Petioles and young branchlets pubescent. (See description, p. 684.)
- 53. Acer cissifolium, Koch. Japan.
- Leaflets three, obovate or oblong, with a long acuminate or cuspidate apex ; margin ciliate with serrations ending in fine points; under surface glabrous, except for axil-tufts and slight pubescence along the midrib. Young branchlets pubescent.
- A small tree, perfectly hardy, and fruiting freely in this country. A specimen of this species about 30 feet high, which Prof. Sargent says is as large as he saw it in Japan, is growing at Westonbirt.
1 Acer sutchuense, Franchet, also from Central China, differs in the glabrous branchlets and serrate leaflets, which are pale beneath, and has not yet been introduced, the plants referred to this species in Journ. Roy. Hort. Soc. xxix. 353, figs. 93, 96, being A, Henryi, Pax.Acer mandschuricum, Maximowicz, a native of Manchuria, which differs little from Acer sutchuense in foliage, is said to be in cultivation in Germany (Mitt. Deutsche Dendrol. Ges. 1906, p. 30).
