708 



ARBORETUM ET FRUTICETUM BR1TANNICUM. 



M. subalba nervosa Hort. Leaves strongly marked with thick 



white nerves on the under side. 

 M. a. 7 itdlica Hort. M. italica Lodd. Cat. ed. 1836. Leaves 



lobed. The plant bearing this name in the Jardin des Plantes has 



the soft wood, or cambium, of the current year's shoots of a deep 



red, when the bark is removed. 

 M. a. 8 rosea Hort, Lodd. Cat. ed. 1836. The small white Mulberry ; 



Milrier rose, Feuille rose, Fr. One of the kinds called in France 



a wild variety. 

 M. a. 9 columbdssa Lodd. Cat. ed. 1836. Columba, Fr. Small 



delicate leaves, and flexible branches. 

 % M. a. 10 membrandcea Lodd. Cat. ed. 1 836. Murier a Feuille de Par- 



chemin, Fr. Large, thin, dry leaves. 

 M. a. 11 sinensis Hort. M. sinensis Hort. ; M. chinensis Lodd. Cat. 



ed. 1836 ; the Chinese white Mulberry, Amer. A large-leaved 



variety. 

 & M. a. 12 pumila Nois. ? M. a. nana Hort. Brit. A shrub, seldom 



exceeding 10 ft. high. 



Other Varieties. All the above sorts are in the arboretum of Messrs. 

 Loddiges ; but in the catalogues of foreign nurserymen there are several 

 other names, most of which will be found enumerated and described in our 

 1st edition, including M. constantinopolitana Poir. (M. byzantina Sieb.), 

 which we believe to be nothing more than a rather distinct variety of M. alba. 



1382. Jfftrus lba. 



The white mulberry is readily distinguished from the black, even in winter, 

 by its more numerous, slender, upright-growing, and white-barked shoots. It 

 is a tree of much more rapid growth than M. nigra, and its leaves are not 

 only less rough and more succulent, but they contain more of the glutinous 

 milky substance resembling caoutchouc, which gives tenacity to the silk pro- 

 duced by the worms fed on them. The rate of growth of young plants is 

 much more rapid than that of M. nigra ; plants cut down producing shoots 

 4 or 5 feet long in one season ; the tree attaining the height of 20 ft. in five 

 or six years ; and, when full grown, reaching to 30 or 40 feet. Its duration 

 is not so great as that of M. nigra. The white mulberry is more tender than 



