PROCEEDINGS OF THE CANADIAN INSTITUTE. 



91 



abundantly minute hyaline conidia, little over i ji long, but as the tuft develops the 

 branches darken and the spores become larger, darker, and some of them septate. 

 Their shape is mostly oblong, slightly pointed at one end, truncate at the other, show- 

 ing the circle of attachment. Continuous spores vary from lA x i to 14 x 4/y, septate 

 ones from 10 x 3 to 30 x 6—8 fi. Under a high power all except the smallest are 

 seen to be rough or minutely echinulate. The hyphs are sub-fasciculate, simple or 

 septate, sub-geniculate, varying in colour from hyaline to olivaceous, sub-dentate or 

 entire above, 40 — 80 x 3 — 6 //. 



On pea-pods, communicated by Dr. J. Fletcher, Ottawa, from South Vancouver, 

 B.C., and by B. C. Buffum, Laramie, Wyoming. Aug. i8g6. Herb. D., No. 2395. 



This fungus was so injurious in the British Columbia locality that the crop was 

 not threshed. 



Cladosporium acutum, E. & D. 



Black tufts, \ — I mm. diam.," thickly .scattered over the lower surface of the 

 leaf, sparingly confluent. Fertile hyphas ctespitose, olive brown, nearly straight, 3 — 5 

 septate, 80 — no x 3^—4 /;, abruptly and mostly obliquely pointed at the apex. Con- 

 jdia elliptic, i-septate, becoming brownish, 10 — 15 x 6 — 8 //. 



On fallen ash leaves, London, Can., Oct. i8g6. Herb. D., No. 2441. 



Cercospora Caricina, E. & D. 



Tufts punctiform, minute, seriate between the parallel ribs of the leaf. Hyphas 

 casspitose, mostly continuous, brown, notched and crooked above, 15 to 25 x 3 to 35 //. 

 Conidia slender, obclavate-cylindrical, hyaline, continuous, 34 — 73 (mostly 35 — 50) 



The leaves of the host are at first dotted with brown specks and blackened, finally 

 becoming dead and then lighter in colour. 



On leaves of Carex rosea, London, Can., Aug. i8g6. Herb. D., No. 2390. 



Cercospora Lespedez.e, E. & D. 



Spots irregular, red, bounded by the veinlets, 2 to 5 mm. Tufts of conidia 

 epiphyllous, hyphce continuous, pale brown, 10 — 25 x 4 //. Conidia clavate-cylin- 

 drical, 35 — 50 x 4I //, i — 5 -septate. 



On leaves of Lespedeza capitata, Michx., London, Can., July, 1893. Herb. D., No. 

 2135 ; N.A.F., No. 3094. 



SPH^ROPSIDE^. 



Phyllosticta Heraclei, E. & D. 



Spots large, i — 2 cm., reddish brown, indefinite, finally confluent and covering a 

 large part of the leaf, which becomes pale and dry. The spots at first are margined 

 with a faint yellowish zone. Perithecia mostly epiphyllous, nearly black, sub-erum- 

 pent, no— 125 //. Spores hyaline, oblong, continuous, 3^ x i:^ //. 



On leaves oi Heyadeum lanatum, Michx., London, Can., September, 1892. Herb. 



D., No. 2026. 



Phyllosticta hispida, E. & D. 



Perithecia gregarious, innate, globose, with a broad round opening, small 

 (75 — 80 //) visible on both sides of the leaf, but more distinct and prominent below. 

 The leaf is clouded with dark, indefinite patches, but there are no distinct spots. 

 Sporules oblong-cylindrical, obtuse, 3 — 4 x i| //. 



On leaves of Smilax hispida, Muhl., London, Can., Sept.-Oct., 1896. Herb. D., 



No. 2424. 



Phoma paniculata, E. & D. 



Perithecia scattered, convex, hemispherical, atout \ mm. in diam., covered by the 

 epidermis which is raised into little black blisters and finally irregularly ruptured. 



