ACER 135 



IV. LEAVES FIVE-LOBED ; STALKS NOT MILKY. 



argutum, downy beneath, doubly toothed. 

 "dasycarpum, glaucous beneath. 



diabolicum, margins ciliate ; flowers yellow. 

 *Hcldreichii, veins downy beneath, lobes very deep. 



hyrcanum. veins downy beneath, rather glaucous beneath. 



insigne, flowers in erect panicles. 



leucoderme, sometimes three-lobed, velvety beneath. 



micranthum, downy only at base of blade. 



Olwerianum, downy only along veins and in their axils. 

 *0palus, lobes shallow ; flowers in March. . 



palmatum (type). 



Pseudoplatanus, downy on veins, pale or glaucous beneath. 



Pseudoplatanus var. villosum, downy all over beneath. 



purpurascens, margins ciliate ; flowers purple. 

 *rubrum, glaucous beneath. 



saccAarum, down in vein-axils, sometimes all over, beneath. 



sincnse, downy only at base of blade. 



Trautvetteri, downy in vein-axils, rather glaucous beneath. 



Tschonoskii, downy on veins or in vein-axils, margins doubly toothed. 

 * Volxemi, downy on veins and in vein-axils. 



V. LEAVES SEVEN- OR MORE THAN SEVEN-LOBED. 



*circinatum, lobes up to nine ; flowers crimson and white, 

 *japonicum, lobes up to eleven ; flowers purple. 

 *palmatum (septemlobum), lobes seven ; flowers purple. 

 Sieboldianum^ lobes seven or nine ; flowers yellow. 



VI. LEAVES COMPOUND. 



*cissifolium, leaflets three ; branchlets downy. 

 *griseum, leaflets three ; teeth large, blunt. 



Henryi, leaflets three, without teeth. 



mandshuricum, leaflets three ; racemes few-flowered. 

 *Negundo, leaflets three or five. 

 *nikoense, leaflets three, hairy beneath. 



sutchnenense, leaflets three ; racemes many-flowered. 



i 



A. ARGUTUM, Maximowicz. 



(Gardeners' Chronicle, 1881, i., f. 132.) 



A small, deciduous tree as seen under cultivation, with erect branches ; 

 young branchlets covered with fine down. Leaves 2 to 4 ins. long, as much 

 wide, five-lobed, produced on long slender stalks, the lobes ovate, long-pointed, 

 with margins prettily double-toothed ; lower surface downy, especially on the 

 whitish veins. Flowers greenish yellow, produced in April before the leaves, 

 in a cluster of slightly downy corymbs, each flower on a slender stalk. Fruits 

 in pendulous racemes ; keys smooth, ins. long, in. wide, spreading 

 horizontally. 



Native of the mountain woods of Japan; introduced to England in 1881, 

 for Messrs. Veitch, by Maries. It is a maple of elegant appearance, with pale 

 green leaves as prettily lobed and toothed as those of A. palmatum. The stalk 

 of the inflorescence and that of the individual flower lengthen considerably as 

 the fruits develop. The branches acquire a purplish brown shade in winter. It 

 is at present 14 ft. high at Kew ; but a better tree is in the fine collection of 

 maples at Westonbirt (Sir George Holford's). 



