ABSTRACTS. 



797 



a very interesting manner, and a considerable amount of information is 

 given about the old names and the prices that some varieties were sold 

 for.— G. S. S. 



Turnip Sawfly. By E. Jacky (Zait. f. Pflanz. xii. 1902, pp. 107- 

 109). — Reports the spread of the insect in Switzerland in 1901. Observed 

 to be most destructive from August to October. Methods of treatment 

 reviewed. — TP'. G. S. 



Tussock Moth, White-marked (Orgyia leucastigma). By Prof. 



A. L. Quaintance (U.S.A. St. Bd. Agr., Maryland, vol. iv., 1901, 

 pp. 92-94 ; 1 fig.). — The larvae caused defoliation of trees in August. Shade 

 trees and orchard trees are attacked. The winter is passed in the egg 

 state, the eggs being laid in white masses in September near or on the 

 cocoon. The larvae hatch in the spring, and feed on the leaves, often 

 migrating to other trees. The female is wingless. — F. J. C. 



Uredineae in America. By J. C. Arthur (Bot. Gaz.xxxiv. No. 1, 

 p. 1 ; with 4 figures). — The author describes in full the species occurring 

 upon Phragmitcs, Spartina, and Arundinaria, on which there is one 

 species of Uromyces and six of Puccinia. — G. H. 



Vandaxconfusa. By R. A. Rolfe (Orcli. Bev. p. 196; July 1902). 

 —Some interesting records of natural hybrid Vandas are entered upon. 



H. J. C. 



Vanilla. " Sur deux Maladies du VaniUier." Par M. le Dr. G. 

 Delacroix (Bull. Soc. Myc. Fr. xviii. p. 274 ; 1902 ; with figs.).— This 

 communication contains a description of the forms or stages in the history 

 of Calospora vanilla (Massee). It suggests that the conidial form, or 

 Glceosporium vanilla (Cooke), was described previously as Vermicularia 

 vanilla (Delacroix), and the name now proposed, as more accurate, should 

 be Colletotrichum vanilla. The author suggests that the species of 

 Gnomoniopsis described by Miss Stoneman (Botanical Gazette, 1898, 

 p. 110) is an immature condition of Calospora vanilla. 



Two other species of Glceosporium are said to occur on Vanilla, viz. 

 G. ajjine (Sacc.) and G. Bussei (Henn), and doubts are expressed whether 

 they and G. macropus (Sacc.) are different from the Glceosporium of 

 Vanilla. 



On the fruits of Vanilla from Tahiti a new species of Uromyces is 

 described under the name of Uromyces Jojfrini (Delacroix), of which the 

 uredospores had been described by Cooke as Uredo scabies (Grevillea, 

 xv. 1886, p. 18) on leaf of Vanilla from Colombia (with figs. 10 to 13). 



M. C. C. 



Vanilla Culture as practised in the Seychelles Islands. By 



B. J. Galbraith (Bull. Bot. Dep. Jam. ix., Pt. 8, p. 113 ; plate).— This 

 describes method of culture, starting a vanillery, preparing the vines for 

 cropping, and artificial fertilisation, curing the pods for market, and 

 expenses, concluding with a summary. — G. H. 



Vangueria Randii. By Spencer Le M. Moore (Journ. Bot. 475, 



