NOTES AND ABSTRACTS. 



with effect as lawn plants or planted against walls. Pruning may be 

 carried out in July and again in September. 



Wistaria chinensis, the commonest, is a native of China, brought 

 to England in May 1816 by Capt. R. Welbank. The white variety is 

 also excellent, but the double less desirable. 



W, muUijuga, also from China, has been long grown by Japanese 

 gardeners. It differs from chinensis in the inflorescence being much 

 longer, from 2 to 4 feet in length. There are pdrplish and white 

 forms. 



W. frutescens is from the United States ; the leaves are upwards 

 of 9 inches long, and the racemes of lilac-purple flowers 4 to 8 inches 

 in length ; it was introduced about 1724, and blooms later than the 

 Chinese varieties. There are a double white, a pale lilac, and purplish 

 forms. 



W. hrachyhoirys, a native of Japan, is a weaker grower than the 

 others. The bluish or mauve flowers are borne in rather dense racemes 

 later than the other species. White and rose-coloured varieties may 

 be obtained. — H. R. D. 



Wood-oil Tree, Chinese. By D. Fairchild [U.S.A. Dep. Agr., 

 Bur. PL Ind., Circ. 108 ; April 1913 ; figs.). — Aleurites Fordii produces 

 fruit when four or five years of age. Its seed contains one of the 

 best drying oils known. It is a native of China, in heavy clay lands 

 along the Yangtze river above Hankow, and has proved hardy in 

 the Southern States. It is deciduous, and late in opening its leaves, but 

 flowers in March (the flowers are said to be less liable to frost injury 

 than are those of pear and peach) . The wood is soft and of little value, 

 but the growing use of soy-bean oil will increase the demand for 

 wood oil, as the former dries too slowly. Five million gallons (requir- 

 ing about 40,000 acres to supply the demand) are now imported into 

 America from China. — F, J. C. 



Woody Aster. By S, K. Loy {U.S.A. Exp. Stn., Wyoming, Ann. 

 Rep., 1912-13, p. 65). — It has been demonstrated practically beyond 

 a doubt that two glucosides are present in the plant, as well as some 

 other compound which yields a pyridine base when treated in an acid 

 solution with a base until it becomes neutral or alkahne. Further 

 investigations are in progress. — A. P. 



Woody Plants of Kentucky. By H. Carman {U.S.A. Exp. 

 Sin. Kentucky, Bull. 169, pp. 62; 20 plates). — ^A Ust of 259 woody 

 plants found in Kentucky.— S. E, W. 



Woolly Aphis. By E. M. Patch {Jour. Econ. Entom. vi. p. 316 ; 

 figs.). — It is suggested that one of the leaf-curhng aphides of the 

 elm is Schizoneura lanigera (the woolly aphis), which it is thought 

 probably migrates from the apple. The other is S. ulmi. — F. J. C. 



