i6io The Trees of Great Britain and Ireland 



Leaves large, with three to seven lobes, and a long acuminate apex ; serrations 

 large, triangular, bristle-pointed. Fruit reddish in colour and insipid in flavour. 

 This is common in the mountains around Peking, and was found by David 

 near Jehol. 



2. Van stylosa. Bureau, in De Candolle, Prod. xvii. 243 (1873); Shirasawa, 

 Icon. Ess. Forest. J apon, ii. t. 6, figs, i-ii (1908). 



Morus stylosa, Seringe, Desc. Miiriers, 225, t. 22 (1855). 

 Morus japonica, Audibert, ex Seringe, loc. cit. 



A shrub rarely exceeding 10 ft. high. Leaves small, about 3 in. long and 

 i|- in. broad, very polymorphic, on the same individual simple, variously lobed or 

 laciniate ; serrations usually ending in long points ; upper surface scabrous with 

 short hairs ; lower surface pubescent on the midrib and veins. Spikes slender ; 

 style twice as long as the ovary, dividing above into two pubescent stigmas. Fruit 

 •small, ^ in. long, reddish, with few achenes. 



This, which is probably a distinct species, is wild throughout the mountains 

 of central and western China; and also occurs in Korea and Japan. According to 

 Seringe, it is tender in France ; and Bailey says that it suffers when young in the 

 northern United States. 



3. Var. tatarica, Loudon, Arb. et Frut. Brit. iii. 1358 (1838). 



Morus tatarica, Linnaeus, Sp. PL 986 (1753)- 



A shrub or small tree, with numerous slender branches ; leaves usually without 

 lobes, broadly elliptic, obtuse at the apex, with blunt serrations. 



This has been found in Russia, growing on tracts inundated by the Volga and 

 the Don, apparently wild, but probably only naturalised. It is much hardier 

 than the type; and was introduced in 1784 into England, and in 1875 into the 

 United States, where in the western prairie States it is used as a windbreak, and 

 for producing fence-posts and fuel.^ 



Numerous varieties have arisen in cultivation : — 



4. Var. latifolia, Bureau, in De Candolle, Prod, xvii. 244 (1873). 



Var. multicaulis, Loudon, Arb. et Frut. Brit. iii. 1348 (1838). 



Morus latifolia. Poire t, in Lamarck, Encyc. iv. 381 (1797). 



Morus multicaulis, Perrottet, in Ann. Soc. Linn. Paris, 1824, p. 129. 



A shrub, dividing near the base into many stems, and suckering very freely. 

 Leaves large, usually without lobes, minutely tuberculate on the upper surface, 

 which also shows here and there peculiar swellings. This is cultivated for 

 feeding silkworms in southern and central China; and was introduced into 

 France in 182 1. 



5. Var. macrophylla, Loddiges, ex Loudon, Arb. et Frut. Brit. iii. 1349 (1838). 

 This differs little from the preceding, except in habit, having a single stem. 



6. Var. venosa, Delile, in Bull. Soc. Agric. Hirault, 1826, p. 13. 



Leaves marked beneath with white prominent veins. This is said to have 

 originated in Europe. 



1 Cf. Pinchot, U.S. Forest Circ. No. 83 (1907). 



