328 YORKSHIRE NATURALISTS* UNION. 



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

 vulgaris — butterbur (Fl. Hx.). 



2301. Fusidium griseum Link. 



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

 MONILIA Pers. emend. 



2302. Monilia aurea Genel. 



N.E. — Bulmer. Scarboro', on mosses. 

 S.W.— Kiveton Park (T. Gibbs). 



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

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



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



2303. Monilia 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. Monilia csespitosa Purton. [Mucov co'spitosa 

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



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

 CYLINDRIUM Bon. 



2305. Cylindrium Cordse Sacc. 



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



2306. Cylindrium flavo-virens Bon. 



S.W.— Melton (F.F. oij. 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 Sph(rrotheca[pannosa\. 



lOlUIUM M0NIL10ini;S Link. 



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

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

 N.W.— Masham (' Nat.' May '03). 



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



