RARE TREES AND SHRUBS IN THE ARNOLD ARBORETUM, U.S.A. 27 



England the nickname of Boston Ivy. Another graceful Ampe- 

 lopsis (not self-clinging) in the Arboretum is A. serjanicefolia ; the 

 foliage is gracefully cut. The plant is, in the cold climate of 

 Boston, truly herbaceous, the shoots being produced every spring 

 from long tuberous roots, and killed down every winter. Of 

 the true vines (Vitis) some beautiful species are noteworthy. 

 The hardiness of Vitis Romaneti and of Vitis amurensis is 

 complete ; the latter beautifully covers with its large, thick, and 

 richly coloured leaves the pillars of a rustic door in the Pro- 

 fessor's garden. One special attraction of the Arboretum is the 

 Vitis palmata (Vitis rubra of Michaux), rediscovered by Engel- 

 mann ; the foliage is indeed quite ornamental. Of Phellodendron 

 amurense a good many specimens exist ; the origin of the seedlings 

 or young plants being different, so are the specimens ; in fact 

 the tree seems to be disposed to sport a great deal, and of some 

 twenty trees growing in a small spot in the 'nurseries, four 

 distinctly different forms could be singled out. The finest and 

 most curious one has a truly tuberous bark that seems as fine- 

 grained and elastic as that of the Cork Oak. This tree is of a 

 beautiful golden yellow in the autumn. 



Of the Zanthoxylums the native species (Z. americanum) is 

 indeed a fine bush, 3 to 4 feet high, very ornamental, and quite 

 hardy. Of the Celastrus, the Japanese species, C. articulately is 

 the finest as far as foliage and habit are concerned ; but the 

 common one, G. scandens, has finer and larger fruits, yellow 

 and red. C. (Orixa) japonica grows as a round, and rather flat- 

 tened, light green bush. 



Ilex glabra is successfully grown, but it will not be found 

 much farther inland, and the vicinity of the coast seems to be 

 necessary for it. In winter, branches laden with the small 

 black fruits are sold in immense quantity. I saw it very gay 

 with its numerous flowers. Ilex decidua, with small scarlet 

 fruits, Ilex verticillata, and I. monticola, some of them better 

 known as Prinos, are also fine shrubs, and well worth having.. 

 They thrive best in deep moist sands mixed with peat, and in a 

 sheltered position. 



Of the numerous and graceful set of the American Ceanothus 

 the Arboretum can show but few, most of the species being of 

 Western America, where the winter is far less severe. 



Of the Sumach family, many and interesting species are 



