856 



JOURNAfj OF TPTE ROYAL TIORTIOULTITRAL SOCTF/PY. 



Brunfelsia undulata {Bot. Mag. t. 8422).— West Indies. Family 

 Solanaceae ; tribe Salpiglossidae. Shrub or small tree, 20 feet high. 

 Leaves ovate-lanceolate, inches long; flowers solitary in wild 



plants, several in cultivated, in terminal clusters; corolla white or 

 yellowish, 2| inches across. — G. H. 



Cabbag-e Diseases in Ohio, Two Recent Important. By Thos. 

 F. Fanns {U.S.A. Exp. Stn., Ohio, Bull. 228, 1911).— Fusarimn wilt 

 or yellows, which had not been reported in Europe when the Bulletin 

 was written, and blackleg or foot-rot of cabbage due to Plioma 

 oleracea. The symptoms of the two diseases above named are quite 

 distinguishable. In Fusarium- wilt the first symptom is yellowing 

 of the leaves, later the growth is stunted, and the lower leaves fall 

 off at the lightest touch. This disease has proved very destructive in 

 the cabbage-growing districts in the vicinity of Clyde and Greenspring 

 in America, where cabbage is mainly grown for making kraut. The 

 remedies suggested are rotation of crops, the exercise of great care 

 to procure disease-free seed-beds, and the burning of diseased refuse, 

 &c. The spores of the Fusarium remain in the soil, and thus infect 

 fresh crops. 



Black-leg, Phoma oleracea, produces no yellowing of the leaves or 

 withering until later stages. White elongated oval patches occur on 

 the stems, and small black pycnidia are scattered over the patches. 

 The affected tissues die back, and break open. In seedlings the leaves 

 of the affected plants become mottled with metallic bluish patches, 

 and should be rejected when planting the crop. Eed cabbage seems 

 to be the most susceptible, then Savoys, Danish head cabbage, and, 

 lastly, cauliflowers have been known to become infected, and a good 

 deal of damage done. The remedies are practically the same as for 

 Fusarium. Treating the seed-bed with Bordeaux (4-4-50 formula) one 

 gallon to each square foot is recommended. 



Good figures are given. — D. M. C. 



Cabbage Top in Swedes. By T. IT. Taylor, M.A. {Univ. of 

 Leeds, Bull. 82, 1912; plates). — Two forms of disorder, a many- 

 necked growth and " crumpled leaf " may be produced in swedes by 

 the insect that has been the subject of investigation by the author. It 

 is a minute two-winged fly named the swede midge {Contarinia nas- 

 turtii Kieffer). The eggs are laid upon the leaves, where the larvae 

 feed, hollowing out pieces of the midribs and petioles. They pupate 

 in earthen cells and there may be several broods during the year. 

 Tiie paper is exceedingly well illustrated. Spraying with a mixture of 

 lime and naphthalene on the first appearance of the winged insects in 

 June checked the attack. Eotation of cropping checks the attack, and 

 the sowing of swedes round the old field from which migration isj 

 likely to come will act as a trap for them. — F. J. C. 



Calceolaria cana {Bot. Mag. t. 8416). — Chile. Family Scrophu- 

 Idriaceae; tribe Calceolarleae. Herb, perennial, tufted. Leaves 



