98 Transactions British Mycological Society. 
Entyloma compositarum Farl., on Ambrosia trifida, Morris, I. L. C., 320D. 
E. Menispermi Farl. and Trel., on Menispermum canadense, I. L. C., 194D. 
oie Syntherismae (Peck) Farl., on Panicum milaceum, Keyes, 
150F. 
Sphacelotheca Sorghi (Link) Clinton, on Sorghum vulgare, 433. 
Tilletia laevis Kuehn, on Triticum aestivum, listed by Clinton in N. A. 
Flora, vit, 48, 1906. This is the only smut from Manitoba listed in that work. 
The only bunt of wheat the writers have found is caused by T. Tritici; but 
T. laevis may also still occur in the Province. 
T. Tritici (Bjerk.) Wint., on Triticum aestivum, 157. This smut is wide- 
spread over Manitoba, although not serious because of the common practice 
of treating seed wheat. 
Urocystis Anemones (Pers.) Wint., on Pulsatilla patens, Brandon, W. P. F. 
and I. L. C., 380; also collected by Conners at Carberry. 
U. occulta (Wallr.) Rab., on Secale cereale, V. W. Jackson, 299. Found by 
Prof. Jackson on volunteer rye beside the Biology Building, M. A. C.; also 
reported on the plots at the M. A. C., Winnipeg; not found in fields throughout 
the Province. 
Ustilago Agropyri (?) on Agropyron tenerum, V. W. Jackson, 137. Common 
and more or less injurious to this grass. 
U. anomala (J. Kunze) Wint., on anthers of Polygonum (Tiniaria) cilinode, 
A. H. R. B., Minaki. 
U. Avenae (Pers.) Jens., on Avena sativa, 172, 310, Ste. Rose, 1011; Lonely 
Lake, 1072. Common and rather destructive to oats. 
U. Hordei (Pers.) Kel]. and Swingle, on Hordeum vulgare, Portage la 
Prairie, I. L. C., 107; Gilbert Plains, 1020. Common but does not cause much 
loss. 
U. hypodytes (Schl.) Fries, on Stipa viridula, Rapid City, I. L. C., 173F. 
U. levis (IKK. and S.) Magn., on Avena sativa, 309. Not very common. 
U. Lorentziana Thuem., on Hordeum jubatum, Boissevain, I. L. C., 182F. 
U. neglecta Niessl., on Chaetochloa glauca, 297. 
U. striaeformis (West.) Niessl., on Beckmania erucaeformis, I. L. C. and 
H. Groh., 1088]. Prof. H. S. Jackson reports that this is the first time he has 
seen a smut on this host, but that the smut agrees with U. striaeformis though 
there may be strains. 
U. Tritici (Pers.) Rostr., on Triticum aestivum, 176, 180, Oakville, V. W. 
Jackson, 302; Binscarth, 472; Gilbert Plains, 1066. Common, sometimes 
causing 10 % loss of wheat. 
U. Zeae (Beckm.) Unger, on Zea Mays, Glenora, 358. Very prevalent in 1921. 
U. sp. on Phragmites Phragmites. Delta, V. W. Jackson, 1089/. H. S. 
Jackson reports that this may possibly be U. mirabilis Sorokin, heretofore 
known on.y from Russia. 
UREDINALES. 
List compiled with the assistance of W. P. Fraser and 
I. L. Conners. 
The number of rusts in Manitoba is necessarily somewhat 
limited because of the short growing season, the relatively small 
range of hosts, and the absence of marked variation throughout 
the province in elevation, precipitation, etc. 
The 80 species here listed fall in 19 genera. Only some eight 
species (five Puccinia, two Polythelis, one Nyssopsora) are short 
cycled (telia only or pycnia and telia). » 
The North American Flora (vol. vir) has in general been 
followed, except that Puccinia and Uromyces names are used. 
Aecidium Allenii Clinton, I on Eleagnus argentea, Russell 1002. Probably 
a stage of Puccinia Rhamni. 
