100 Transactions British Mycological Society. 
it became destructive in gardens around Winnipeg; 73, 131, 195. Probably 
occurred previous to 1920, but was not noted. Not found in 1921. 
P. Asparagi DC., II, III on Asparagus officinalis, 270; Brandon, W. P. F. 
Not found to be serious. 
P. Asperifolii (Pers.) Wettst., II on Secale cereale, I. L. C., 142; V. W. 
Jackson, 274; Swan River, 474. Common, but not serious on rye. 
P. Asteris Duby, III on Aster Novae-Angliae, reported by W. P. F., Brandon. 
P. Asterum (Schw.) Kern., I on Solidago rigida, S. spp., Aster spp., Grindelia 
squarrosa, 76, 295, 294, 211; Brandon, W. P. F.; Morris, I. L. C., 93; Virden, 
291; Riding Mountains, 466; Swan River, 488; II, III on Carex scoparia, 
Brandon, W. P. F. 
P. calthaecola Schr., I, II, III on Caltha palustris, Dauphin, W. P. F. 
P. Cicutae Thuem., on Cicuta maculata, Brandon, W. P. F. 
P. Cirsii Lasch, on Carduus Flodmani, Brandon, W. P. F. 
P. Clematidis (DC.) Lagerh. (including P. Agropyri); I on Anemone cana- 
densis, A. sp., 163; Morris, I. L. C., 196; Gilbert Plains, 1060; Lazare, 499; 
Swan River, 482; on Thalictrum dasycarpum, T. venulosum, 126, 71; Morris, 
I. L. C., 201, Eden, 454; Virden, 290, Swan River, 1076; on Actaea alba, 
A. rubra, 155J., 156, 293; Eden, 455. II, III on Bromus ciliatus, Neepawa, 
I. L. C., 105; Elymus virginicus, 267; E. Macounii, Morris, I. L. C., 210. Also 
collected by W. P. F. on Agropyron tenerum, A. Richardsonii, A. Smithii, 
Bromus latiglumis, Elymus canadensis, Hordeum jubatum, Poa arida. A very 
common rust in Manitoba. For cultures made by Prof. Fraser, see Mycol. x1, 
133, 1919. Collections on Bromus are of the P. tomipara type. 
P. Distichlidis Ellis and Ev., I on Steironema ciliata, Morris, I. L. C., 124; 
Brandon, W. P. F.; II, III on Spartina Michauxiana, Waskada, 100; Brandon, 
WAP F. 
P. Eatoniae Arth., I on Ranunculus abortivus, Riding Mountains near 
Kelwood, 464. Placed here with some uncertainty, but the distributed aecia 
ig te this rust. 
Eleocharidis Arth., I on slg gone purpureum, Brandon, W. P. F.; 
it, ‘i on Eleocharis sp., Brandon, W. P. 
P. Ellisiana Thuem., I on Viola puoi a V. sp., 122, 87; II, III on Andro- 
pogon furcatus, Brandon, W.PaE: 
P. epiphylla (L.) Wettst., II on Poa pratensis, P. sp., V. W. Jackson, 249, 
250. 
P. graminis Pers. I on Berberis vulgaris, 202, 138, 252; Brandon, 282. 
II, III on Triticum aestivum, first found during 1920 on June 30th, at Winnipeg; 
during 1921, on June 27th, at Emerson; thenceforth northward and soon found 
everywhere. On Hordeum vulgare, 181, 206, 259; on Avena sativa, A. fatua, 
145, 204, 258; V. W. Jackson, 273; on Phleum pratense, 161, 275; Swan River, 
480; Gilbert Plains, 1067. The II stage evidently lives over winter on timothy, 
since the rust can be found on timothy before it appears on grains. On 
Agropyron repens, A. tenerum, A. caninum, A. Smithu, 153, 261, 213, 208, 
260, 262; Lyleton, 97; on Hordeum jubatum, 192, 193, 154, 117; Lyleton, 96. 
On Elymus Macounii, E. canadensis, 160, 278, Morris, I. L. C., 70. On Dactylis 
glomerata, 263; on Alopecurus pratensis; The Pas, V. W. Jackson, 266; on 
Festuca elatior, 265. On Beckmannia erucaeformis, Roblin, W. Rae. Also on 
other hosts. This is by far the worst plant disease in Manitoba. 
P. Grossulariae (Schum.) Lagerh. I on Grossularia spp. and Ribes ameri- 
canum, R. spp., wild and cultivated, 132, 441, Matlock, 133; Morris, I. L. C., 
200; Eden, 457; Virden, 286. II and III on Carex spp., Brandon, W. P. F. 
P. Helianthi-mollis (Schw.) Jackson, I, II, III on Helianthus annuus (cult.), 
H. fascicularis, H. sp., 470, 92, 171, 165; Portage la Prairie, I. L. C., rom; 
Brandon, I. L. C., 177; Melita, 110; Waskada, 98; Russell, 1007; Dauphin, 
W. Poe: 
P. hemisphaerica (Peck) Ell. and Ev., I, II, III on Lactuca pulchella, 86, 
255, 250, 1082; Lazare, 1oo1; Gilbert Plains, 1064; Thunder Hill, Swan River, 483. 
P. hieraciata (Schw.) Jackson (P. patruelis Arth.), I on Lactuca pulchella, 
Nabalus albus, 86; Morris, I. L. C., 95; Eden, 462; Brandon, W. P. F.; II, III 
on Carex spp., Brandon, W. P. F. 
