2o8 YORKSHIRE NATURALISTS* UNION. 



TILLETIE.S Till. 

 TILLETIA Tul. 



1416. Tilletia tritici Wint. [T. caries Tul.]. 

 S.W. — Doncaster (Tr, iv.). 



Mid W. — Healaugh and Wetherby (Lees' F].). 



N.E. — Scarboro'. On cultivated wheat. 



A destructive parasite converting the infected grain into a 

 black mass, having a strong fishy odour when rubbed (Mass. 

 Text-book of Plant Diseases). Too common in wheat 

 growing districts. 



1417. Tilletia Rauwenhofi Waldh. 



S.W. — Doncaster (F.F., 'gi). (Gard. Chron., 1892, p. 302). 

 N.E.— Castle Howard (F.F., '92). Terrington Carr, '92. 

 S.E. — Everingham (F.F., '93). 

 On Holms mollis. 



1418. Tilletia strisBformis (Westd.). [Ustilago salveii 

 B. & Br.] . 



S.W.— Shipley (' Nat.', Aug. '81). Bolton, near Bradford, 

 on leaves of Triticum yepens (Lees' FL). Storthes Hall, near 

 Huddersfield (F.F., '95). EUand and Hebden Bridge, on 

 Holciis lanatus (Fl. Hx.). 



UROCYSTIS Rabenh. 



1419. Urocystis occulta (Wallr.). 



S.W. — Saltaire, on leaves of Triticum repens (Lees' Fl.). 



This smut is most abundant on rye, but also occurs less 

 frequently on oats and barley, and has been met with on wheat 

 in Australia, according to Wolff (Mass. Text-book of Plant 

 Diseases). 



1420. Urocystis agropyri (Preuss.). [U . Fischeri 

 Korn.] . 



S.W. — Eccleshill, near Bradford (Grev. xiii., p. 52). Saltaire 

 (' Nat.', Mar. '85). Hebden Bridge (Fl. Hx.). Cullingworth. 

 Mid W.— Hawksworth (Lees' Fl.). 

 On Cavex glanca. 



Trans. Y.N.U., 1904 (pub. 1904). Bot. Series, Vol. 6. 



