NOTES AND ABSTRACTS. 



619 



yellow, and dies. It is caused by a fungus, Fusarium vasinfectum. 

 • To combat it disinfect the soil. 



All diseases which spread from the soil may be treated with fumes 

 of sulphuretted hydrogen produced by the decomposition of sulphur 

 compounds in the soil, or with fumes of bisulphide of carbon used 

 as in viticulture. 



Eusts may be treated with applications of sulphur or alkaline 

 sulphides. 



Diseases which cause brown, violet, or blackish patches must be 

 ■ treated with salts of copper. 



Some of the Pinks are attacked by special fungi peculiar to them- 

 selves, but may all be treated as for ordinary fungus diseases. 



M. L. H. 



Celmisias at Kew. By W. T. {Gard., June 10, 1911, p. 274; 

 -fig.). — Special attention has recently been given to the cultivation 

 of Gelmisias at Kew, with the result that several species have now 

 )become established. They are planted in a small rockery in a 

 sheltered corner with a north-east aspect. They thrive better in a 

 ■moist and shady situation than in a sunny one. Though quite hardy, 

 'they require protection from damp in winter and from east winds 

 In spring. They chiefly inhabit the mountains of New Zealand, 

 'but one or two species are Australian. C. Brownii is one of the 

 largest species, the leaves are 10 to 16 inches long by 3 inches broad, 

 [the under-surface clothed with a soft brown tomentum, and the flowers 

 3 inches in diameter. 



C coriacea, known as the ' Kid Glove ' plant from the white felt 

 Iclothing its leaves, has flowers 4 inches across. C. holosericea is very 



' floriferous, forming a large tuft, the leaves green above with a white 



ki silky under-surface; the flowers are 3 inches across. 



C. petiolata, of robust growth, resembles C. Brownii in foliage, 

 'but the flowers are smaller. Other species are C. discolor, C. Mackayii, 

 G. Munroi, G. hieracifolia, G. Lindsayi, G. rohusta, G. specta-hilis, 

 G. viscosa, and G. verhascifolia. — H. R. D. 



Cistus florentinus. By E. A. Bowles (Gard., Sept. 2, 

 L911, p. 422; fig.). — This is one of the most useful of the family 

 : 'or forming a low flat bush or hanging over a stone. It is now 

 ■egarded as a hybrid form, its parents being G. monspeliensis and 

 \ salvifolius, and this is borne out by its sterility; but it is easily 

 )ropagated from cuttings in the early autumn. The purity of its 

 vhite flowers with yellow centres is well set off by the rich green 

 >f the leaves. It should have a sunny, well-drained position, and the 

 )lants should be renewed every three or four years. — H. R. D. 



4 



Citrus Fruits, A Study of the Improvement of, through 

 Jud Selection. By A. D. Shamel {U.S.A. Dep. Agr., Bur. PI. 

 nd., Girc. 77, June 1911; figs.). — This is an account of the preliminary 



