238 VOKKSIIIKK NA I IKAflSTs' UNION. 



" This pest is more especially injurious to younj:^ cherry- 

 trees, but also attacks the apple, peach, and other cultivated 

 and wild plants belonginj( to Rosacetv ; it also occurs on 

 species of Vacciuinm " (Mass. Text-Book of Plant Diseases). 



1670. Podosphaera tpidactyla (Wallr.) De By. 

 N.E. — Scarboro', on Prinius I'adiis, bird-cherry. 



SPH.EROTHECA Lev. 



1671. Sphaepotheca pannosa (Wallr.). 



Conitiion on wild and cultivated rose Inishes, especially 

 in the conidial [Oidium leuconiium Desm.) condition; it 

 attacks the stems, leaves, and calyces. Records numerous. 



1672. Sphserotheca castagnei Lev. 

 Miu W. — Malhani ; Grassington (Lees' V\.). 



S.W. — Bingley; Saltaire (Lees' FL). l^otridingsWood, on 

 Akhemilla viilgai'is (F.F, '01, 'Nat.', Nov. '01 =S. liitmuli). 

 Hebden Bridge, on Spira;a Ulmaria (Fl. Hx.). 



N.E. — Hawnby, on 5. Ulmaria '83 (J.A.W.). Scarboro', on 

 vegetable-marrow. Egton Bridge, on garden peas (F.F. '02). 



S.E. — Nr. Selby on hop = //!iinnl lis Lnpuhis (R.H.P.). 



N.W. — Mashain, on A. vulf^aris ('Nat.', Jan. '02 = .9. 

 huiiinli), 



" Parasitic on numerous wild plants of various Orders " 

 (Mass. Text-Book of Plant Diseases). 



I'HYIJ.ACTINIA Lev. 



1673. Phyllactinia sufTulta (Reb.) Sacc. [Phyll actinia 

 guttata Lev. . 



Mid W. — On leaves of hawthorn, hazel, and forest trees, 

 locally abundant (Lees' Fl.). 



S.E. — Near Hull, on hawthorn, common (R.H.P.). 

 N.E. — Raincliflf", Scarboro' on Covyhis Avellaiia. . 



" This fungus is also parasitic upon the leaves of elm, ash, 

 birch, beech, alder, willow, oak, hornbeam, honeysuckle, 

 spindle-tree, cornel, and sea-buckthorn " (Mass. Text-book 

 of Plant Diseases, p. 98, f. 26). 



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



