96 Transactions British Mycological Society. 
V. W. Jackson, 1197; Roblin (W. Rae); common and often destructive 
to wild grasses, common on rye. 
Gibberella Saubinetii (D. and M.) Sacc. Fusarium stage on Triticum aes- 
tivum, W. H. Mackie Aug. 1920, 374. Quite common in 1921. 
Hypomyces lactifluorum (Schw.) Tul. On Lactarius piperatus, L. spp., 333, 
581, Gimli, 582, Minaki, 786. Very common. 
Nectria cinnabarina (Tode) Fr. On Prunus spp., 395; Stony Mountain, 891; 
Swan River, 1032. 
N. episphaeria (Tode) Fr., near Kenora, 9148S. 
N. Peziza (Tode) Fr., St Charles, 949S. 
Dothidiales: Phyllachora graminis (Pers.) Fcl., on Elymus virginicus, E. cana- 
densis, 72; Neepawa, I. L. C., 108. 
Plowrightia morbosa (Schw.) Sacc., on Prunus spp., Virden, 287; Stony 
Mountain, 892; Swan River, 1033. Very common, and often destructive 
on wild plums, etc. 
Sphaeriales: Anthostoma adustum (C. and P.) Sacc., on old wood, 1168Br. 
Daldinia concentrica (Bolt.) Ces., on wood, 231, 327, 842, 438; Swan River, 
1025. 
Didymosphaeria manitobiensis Ell. and Ev., on Rubus (probably R. stri- 
gosus), coll. J. Dearness on banks of little Saskatchewan River, Oct. 3, 
1891. Reference in N.A. Pyrenomycetes, p. 732. Specimen at Ottawa, 
from original collection. 
Diatrype spp., 948Br., 423Br. 
Gnomonia ulmea (Schw.) Thuem. Conidial stage on Ulmus leaves, J. J. 
Christensen and G. R. B., 315D. 
Gnomoniella Coryli (Batsch) Sacc., on Corylus americanus leaves, 179. 
Hypoxylon commutatum Nits., on old wood, 947Br. 
H. fuscum (Pers.) Fr., on old wood, 733B., 954S. 
H. Morsei B, and C., on wood, I. L. C. and G. R. B., 425Br. 
H. rubigninosum (Pers.) Fr., 739B. 
Lasiosphaeria strigosa (Alb. and Schw.) Sacc., on wood, 4215S. 
Physalospora Cydoniae Arnaud, Sphaeropsis stage on leaves of Pyrus malus, 
Morden, coll. A. V. Mitchener, 1050 det. H. T. Giissow. This fungus 
has not been found to be common on apple. 
Valsa translucens de Not., on wood, 937Byr. 
Venturia inaequalis (Cke.) Aderh., on leaves of Pyrus malus, 216, 324, 187. 
Common but not ordinarily serious on apple. 
FUNGI IMPERFECTI. 
This list of imperfect fungi is obviously very incomplete. 
Most of the identifications are by the courtesy of Dr Davis. 
Few saprophytic forms have been collected. 
Alternaria Solani (E. and M.) Jones and Grout, on potato leaves, Gilbert 
Plains, 1062; common over Manitoba in 192tr but not serious. 
Asteroma Gentianae Fcl., on Dasystephana (Gentiana) Andrewsii, 1138D. 
Dr Davis reports that this fungus has been confused with Phyllosticta 
(Depazea, Leptothyrium) gentianaecola. 
Botrytis Paeoniae Oud., on Paeony (cult.), 89. Sometimes injurious. 
Cephalothecium roseum Cda., on citron fruit, 298; on Prunus fruit, Swan ~ 
River, 1074; on Lentinus, 1098. 
Cercospora althaeina Sacc., on cultivated hollyhock, 1132D. 
C. avicularis Wint., on Polygonum aviculare, Lazare, 1128D. 
C. dubia (Reiss) Wint. (C. Chenopodii Fres.), on Chenopodium album, 
Carberry, LG. 1157D: 
C. manitobana J. J. Davis, sp. nov. Spots brown, subcircular, I—5 mm. in 
diameter above, less distinct below; conidiophores hypophyllous, fasci- 
culate, fuligenous, straight or incurved or somewhat undulate, simple, 
sometimes septate, more or less nodulose, 35—60 x 3-4; conidia hyaline, 
obclavate, straight, becoming I-septate, 50-63 x 4-6n. 
