328 YORKSHIRE NATURALISTS* UNION. 



S.W. — Elland Park Wood, on old petioles of Petasites 

 vulgaris — butterbur (Fl. Hx.). 



2301. Fusidium gpiseum Link. 



S.W. — Potridings Wood, on dead oak-leaves (F.F. '01). 

 MONILIA Pers. emend. 



2302. Moniiia aurea Genel. 



N.E. — Bulmer. Scarboro', on mosses. 

 S.W.— Kiveton Park (T. Gibbs). 



N.W. — Swinton, near Masham, on moss in saw-mill yard 

 (' Nat.' Jan. '02). Rokeby (P\F. '04). 



(Mass. Brit. Fung. Fl. iii. p. 283, fig. 2, p. 274). 



2303. Moniiia fructigena Pers. 



N.E. — Scarboro', on apples, plums, and cherries. A very 

 destructive parasite, growing first on the leaves and passing 

 to the fruit. One of the commonest and most widely 

 distributed moulds against which the fruit grower has to- 

 contend (Mass. Text-Book of Plant Diseases, pp. 300-2, fig. 79). 



2304. Moniiia csespitosa Purton. \Mncor asspitosa 

 Hend. ; Moniiia racemosa Sacc. Syl., iv. n. 163] . 



S.W. — Halifax, on rotting substances (Bolton, Tab. 132, f. 2).. 

 CYLINDRIUM Bon. 



2305. Cylindrium Copdse Sacc. 



S.W. — Nr. Hebden Bridge, on dead oak-leaves (Fl. Hx.). 



2306. Cylindrium flavo-virens Bon. 



S.W.— Melton (F.F. '01). Elland Park Wood (Fl. Hx.). 



N.W.— Masham (' Nat.' Jan. '02). Rokeby (F.F. '04). 



N.E. — Scarboro', on dead oak-leaves. Egton Bridge. 



(F.F. '02). 



On fallen leaves of oak, beech, etc. ; commonest on oak. 



OIDIUM Link. 

 [OlDIUM LEUCOCONIUM Desm. 



Common on the stems, leaves, and calyces, of cultivated 

 and wild roses. The conidial condition oi Sphirrotheca'pannosa].. 



[OlDIUM MONILIOIDES Link. 



S.W. — Elland; and near Hebden Bridge (Fl. Hx.). 

 N.E.— Castle Howard (* ' Nat.' June '80). 

 N.W.— Masham (' Nat.' May '03). 



Trans. Y.N.U., 1905 (pub. 1905). Bot. Series, Vo). 6. 



