36 



JOURNAL OF THE ROYAL HORTICULTURAL SOCIETY. 



beneath the cuticle, being somewhat flattened and of a darker reddish 

 brown externally, but whitish within, and without any true conceptacle. 

 The mass of spores is whitish, and is ejected when mature through a 

 central opening in the cuticle. The conidia, or sporules, are oblong and 

 curved (10x5 p). In wet weather they may be seen oozing out in a 

 tendril through the aperture in the cuticle. 



It is bad policy to treat any of the species of Anthracnose with con- 

 tempt, seeing that they may give trouble at any time should a favourable 

 season occur ; and it has proved to be very far from harmless in the 

 United States, where the remedy recommended is spraying with one of 

 the copper solutions. 



Star. Si/U. hi. 3694 ; Muss. PL Dis. 286 ; Cooke Hdbk. No. 1235. 



GUvosporiam curcatum, known in Holland on Black Currant leaves, 

 has larger conidia (14-20 x5-7 ft). 



Gooseberry Cluster-cups. 

 Mcidium yrossularice (Gmel.), PI. XII. fig. 33. 



These cluster-cups seem to be rather erratic in their appearance, as in 

 some years they can scarcely be found at all. They occur principally on 

 the living leaves or the green fruit. 



The spots on the leaves are yellow T on one side and reddish on the 

 other, with a yellow border. The cups are clustered in the centre of the 

 spots, and are rather long, with the usual white fringed margin. The 

 acidiospores are bright orange, produced in chains, but freely separating 

 into somewhat globose spores, with a finely spinulose surface (10-20 /j. 

 diam.). 



This is one of those fortunate species whose fate is not linked with 

 ;iiiv Uredo or Puccinia, Up to now no enthusiast has imagined for it a 

 graminivorous bride, and for the present it has to run its course in single 



blessedness. 



The species is known in France, Belgium, Germany, Lapland, 

 Denmark, Switzerland, Asiatic Siberia, and North America. 



Quite recently it has been decided by authority that the proper 

 Uredo and Puccinia are to be found on the leaves of species of Curex. 



Sacc. Syll. vii. 27H7 ; Cooke M. F. 192; Gurd. Chron. July 1881, 



■ 15-19 j Mass. PL Dis. 95; Cooke Hdbk. No. 1620; Plow. Br. 

 Ored. 2GH. 



Gooseberry Mildew. 



Microsphara grossularicr. (Lev.), PI. XII. fig. 34. 



A little of the Gooseberry mildew appears every year, but it does not 

 always proceed beyond the mealy or oonidial stage. The living leaves 

 i ( nine whitened and chalky, as in the allied species, from the interwoven 

 mycelium, which m reads over the surface of the leaves. Its occurrence 

 has been most observed in very dry seasons and on both sides of the 

 b »Y4 !• Tbe first Btage is an Oidium, with its chain of conidia. 



