NOTES AND ABSTRACTS. 



677 



and even then appears at present to be scanty and sporadic, hence 

 it is not Ukely to beco-me a serious pest to growers of outdoor tomatos. 

 In the case of tomatos grown under glass, however, this fungus may 

 cause a severe epidemic, as already pointed out by Massee {Kew 

 Bulletin, 1909), on account of the conditions of growth being so 

 favourable for its development. It may be mentioned that this fungus 

 is included in the list of pests scheduled by the Board of Agriculture, 

 under the Destructive Insects and Pests Acts. — F. C. 



Trees and Shrubs, Some Important Insects of Illinois Shade. 



By S. A. Forbes {U.S.A. Exp. Stn., Illinois, Bull. 151; Oct. 1911; 

 67 figs.). Some twenty-five more or less destructive insects are 

 described, with the best methods of prevention and control. — V, G. J. 



Trees, Notes on Diseases of. By G. G. Hedgcock {Phyto^ 



pathology, ii, pp. 73-80; April 1912). — These are mostly notes on the 

 native trees attacked by certain parasitic fungi in the United States. 

 The fungi dealt with are Polyporus dryophilus associated with the 

 piped rot of oak; Fomes Everhartii, of which F. nigricans is a de- 

 pauperate form, also causing rotting of oak and many other trees; 

 F. igniarius causing white rot; Polyporus texanus, causing a mottled 

 brown and white heart -rot ; Fomes applanatus, F. fasciatus, Polyporus 

 ndphureus, P. Schweinitzii, Fomes fraxinopliilus , F. rohinae, all 

 of which occur on deciduous trees. On conifers Trametes pini is 

 the most destructive, Polyporus Schweinitzii ranking next. Fomes 

 roseus, F. laricis, Echinodontimn tinctorum, Polyporus sulphureus, 

 Fomes pinicola, Polyporus amarus, Lentinus lepidem, and Hydnum 

 coralloides also cause rots of various types on coniferous trees. Lists 

 of hosts are given in every case. — F. J. C. 



Tropaeolum peregrinum. The Production of Hairs on the 

 Stems and Petioles of. By A. W. Hill (Ann. Bot. xxvi. pp. 589- 

 592; April 1912; 1 plate). — An interesting paper giving an account 

 of the production of hairs on the stems and petioles of the Canary 

 Creeper (Tropaeolum peregrinum). The phenomenon was first 

 observed on plants whose leaves had been eaten by snails. Subsequent 

 experiments proved that hairiness could be induced by removing the 

 laminae of the leaves. The artificial production of an alternately 

 glabrous and hairy condition is thus possible. The structure of the 

 hairs is described and also their mode of origin. — A. D. C. 



Turkestan, Conspectus of Flora of. By Olga and Boris 



Fedtischenko (Beih. Bot. Cent. Bd. 28, pp. 226-277).— This paper 

 is a continuation of this Flora and contains part of the Compositae 

 (Eupatorimn to Senecio). — G. F. S. E. 



Ustilagineae and Uredineae of Ceylon. By T. Fetch (Annals 



Hoy. Bot. Gard. Peradeniya, v. p. 223). — An enumeration with 

 descriptions of 120 species of these parasitic fungi, several of which 

 are new. — F. J. C. 



