126 British Fu ng i. 



Characterized by the obovate gonidia. 



Peroiospora candidacy Fckl. 



Forming broadly effused, white patches, gonidio- 

 pliores thin, erect, simple for some distance above, 6 — 

 10 times dichotomously divided, ultimate branchlets 

 slender, spreading, often slightly curved ; gonidia 

 broadly elliptical, very obtuse, 15-18x10-13 //,; 

 oospores globose, rugulose, bright brown, 30-36 //. 

 diameter. 



Peronospora Candida, Fuckel, Fung. Ehen. n. 3S ; 

 Cke. Hdbk. n. 1786; Cke. Micr. Fung. ed. 2, p. 

 225 ; Sacc. Syll. vii. n. 860. 



On living primrose leaves, frequently covering a 

 considerable portion, or the whole of the under surface, 

 witb a white, minutely-velvety layer. Local. This 

 species has occurred in Germany on the leaves of 

 Anagallis arvensis, var. ccerulea. 



Peronospora hyoscyami, De Bary. 



Gonidiophores stout, tall, 5 — 8 times dichoto- 

 mously divided, branches spreading, becoming thinner, 

 straight or curved, ultimate branchlets spreading at 

 very obtuse angles, short, conico-subulate, straight ; 

 gonidia elliptical, very obtuse^ pale lilac, 13-24 x 

 13-18 /ju. 



Peronospora hyoscyami, De Bary, Ann. Sci. Nat. 



ser. iv. vol. xx. p. 123; Sacc. Syll. vii. n. 877. 



Peronospora effusa, var. hyoscyami, Rab. Fung. 

 Eur. n. 291. 



On living leaves of Hyoscyamus niger. Eare. 



Forming scarcely conspicuous, greyish-brown, 



