Acer
The species of this genus number about fifty, and are found in Europe, North America, North Asia, Java, and the Himalayas. To those described on pp. 9-11, Vol. I., the following should now be added:
A. colchicum tricolor (Colchican, three-coloured). A synonym of A. pictum tricolor.
A. Heldreichii (Heldreich's). fl. in small, terminal panicles, which are shorter than the leaves. l. small, palmately five-lobed; lobes obtusely dentate, acute, the middle one cuneately tapering to its base. Greece. (G. C. n. s., xv., p. 141; R. G. 1185.) A. insigne (remarkable).* fl. green, 1/4in. in diameter; panicles pyramidal, terminal, 3in. to 4in. long, appearing with the leaves. May. l. 5in. to 6in. in diameter, rounded-reniform, palmately divided to the middle into five to seven oblong, acute, coarsely and obtusely serrated lobes, glabrous above, more or less tomentose beneath. Persia. The latest of all the Maples to come into leaf. (B. M. 6697.) SYN. A. velutinum.
A. pictum tricolor (three-coloured). l., young ones of a bright violaceous-red, irregularly shading off here and there into all tints of dark red or crimson to creamy-white. 1886. Garden variety. SYN. A. colchicum tricolor.
A. platanoides compactum (compact). An ornamental variety, producing a compact, round head. 1886.
A. p. integrilobum (entire-lobed). This only differs from the type in having the lobes of the leaf entire. (R. G. 1887, p. 431, f. 107-8.) A. p. Reichenbachii (Reichenbach's). l. large, changing in the autumn to a deep crimson-red, varying to yellow and brown.
A. p. undulatum (wavy). l. bullate, with very wavy, crisped margins. A curious and interesting variety.
A. velutinum (velvety). A synonym of A. insigne.