SOAPBERRY FAMILY. Ill 



rate ; clusters of white flowers short, thyreoid ; wings of fruit diverging 

 at an acute angle. Leaves very bright colored in autumn. Var. Cinnala. 

 Leaves much longer than broad, mostly deeply 3-lobed. Mediterranean 

 to E. Asia. 



A. spicatum, Lam. Mountain M. Tall shrub or tree ; leaves slightly 

 3-lobed and coarsely toothed, downy beneath ; spike-like clusters of small 

 greenish-yellow flowers ; fruits with narrow wings diverging at an obtuse 

 angle. Flowers June. N. 



*+ ++ Flower clusters pendulous. 



A. Pseudo-PI&tanus, Linn. Sycamore M. A fine tree, with spread- 

 ing branches, ample 5-lobed leaves, whitish and rather downy beneath, on 

 long reddish petioles, the lobes toothed, elongated ; clusters of greenish 

 flowers ; wings of the pubescent fruit moderately spreading. Eu. A great 

 many forms, with golden, purple, or variegated leaves are cult. 



A. Pennaylviniouin, Linn. Striped M., Moosewood. Small tree; 

 bark light green, striped with darker lines ; leaves large, thin, finely 

 sharply serrate all round, and at the end with 3 short and very taper- 

 pointed lobes ; racemes of rather large green flowers, slender and loose ; 

 fruit glabrous with very divergent wings. Common N. 



■*- +- Leaves 7-11-lobed or parted (sometimes dissected), with as many 

 ribs; flowers in corymbiform clusters. 



A. circinatum, Pursh. Vine M. Spreading shrub or tree ; leaves thin 

 and rounded, moderately 7-9-lobed, the lobes serrate ; drooping clusters 

 of 10-20 purplish flowers ; wings of fruit strongly diverging. Oregon. 



A. palmatum, Thunb. Japan M. A large tree ; leaves 7-11-parted ; 

 the segments narrow, often much laciniate ; small purple flowers in 

 erect clusters. A great number of forms with variously cut and colored 

 leaves in cult, under many names : A. polym6rphum, A. Jap6nioum (of 

 horticulturists, not Thunberg), A. dissectcm, etc. 



* * Flower clusters corymbiform, terminating shoots of the season, or 

 some from lateral buds, appearing with the leaves. 



■*- Sepals distinct ; petals present. 



** Leaves thin, with taper-pointed lobes. 



A. platanoJdes, Linn. Norway M. A handsome, round-headed tree ; 

 leaves broad, smooth, bright green both sides, their 5 short lobes set with 

 2-5 coarse and taper-pointed teeth ; flowers numerous ; fruit flat, smooth, 

 with wings 2' long diverging in a straight line. Juice milky ; leaves hold- 

 ing green later than others. There are cut and variegated-leaved forms ; 

 also with colored foliage. 



A. Lobelii, Tenore. A tree much resembling the preceding, except 

 that the leaves are 5-7-lobed, with the lobes almost or quite entire. S. 

 Eu. Forms with reddish or variegated leaves are most planted. 



A. plctum, Thunb., from Asia, with fruit wings, 1J-2 times the carpel 

 (2-3 times in A. Lobelii), and diverging at a right angle, may be different. 



*+ ++ Leaves thickish and firm, lobes blunt. 



A. cam pest re, Linn. A low shrub or tree ; long-petioled, 5-lobed leaves ; 

 lobes with a few, large blunt teeth ; fruit wings in a line or even recurved. 



■t- t- Sepals united ; petals ; leaf-lobes taper-pointed. 



A. saccharlnum, Wang. Rock or Sugar M. Leaves rather deeply 

 3-5-lobed, pale or whitish beneath, the sinuses open and rounded, and 

 the lobes with one or two sinuate, coarse teeth ; calyx bell-shaped and 

 hairy-fringed; wings of fruit ascending, barely 1' long. Large trees 

 lommon, especially N., valuable for timber and for the sugar of their sap. 



