500 FUNGI IMPERFECTI. 



B. galanthina Sacc. occurs on the bulbs of Galantlius nivalis 

 in Britain. 



B. parasitica Cav. produces sclerotia and conidia on Tulipa 

 Gesin'riinia in Italy (Sderotium tulipae}. 



B. vulgaris Fr. 1 This is a very common species, and includes 

 several well-marked varieties. It is 'said to be parasitic on 

 cultivated lettuce causing a " leaf-rot." 



B. fascicularis Sacc. is reputed to be the cause of a " fruit- 

 mould " on the egg-plant (Solanum Melongcna) in the United 

 States. 



A Botrytis is figured by Atkinson 2 as frequent on diseased 

 carnation-plants. 



Ovularia. 



Conidiophores simple except for tooth-like projections near 

 the apex on which the conidia are developed. Conidia uni- 

 cellular, colourless, solitary, rarely in chains. 



" Closely allied to Ramularia, but distinguished by the one- 

 celled conidia " (Massee). 



Ovularia pulchella (Ces.). Briosi and Cavara distinguish this 

 as a disease of Lolium italicum in Italy. The leaves become 

 black-spotted and permeated with an intercellular mycelium, 

 from which arise the erect, branched, septate conidiophores. The 

 more vigorous conidial patches have a delicate rose colour. 



0. necans Pass, produces large spots on the foliage of quince 

 and medlar, so that the leaves gradually wither and dry up. 

 Conidia appear as a white powder on the dead remains. This 

 fungus is recorded from both Italy and France. 



The following are British species occurring on leaves ; several 

 of them, however, are placed by Saccardo under liamularia: 



Ovularia lychnicola (Cke.) Mass. On Li/rltnix <///'//'. 



O. senecionis (Sacc.). On Senecio vulgaris. 



O. lactea (Desm.). On species of Yioln. 



O. armoraciae (Fuck.). On cultivated horse-radish. It is reported as 

 somewhat destructive in the United States. 



O. interstitialis (B. et Br.). On under surface of leaves of primrose,. 

 forming yellow spots in the angles of the veins. 



O. primulana Tliiim. On leaves of J'riiniiln. 



O. cochleariae (Cke.). On Cochlearia officinalis. 



1 Wehmer on species of Boti-i/ti*, Z> il*<-krifi f. PjlanzenTcranTcheiten, 1894. 

 2 Atkinson, "Carnation Diseases" at Amer. Carnation Society, 1893. 



