74 



JOURNAL OF MYCOLOGY. 



[Vol. I. 



(ge)iiiculate) something like the rachis in a head of wheat. When the 

 hyphse have reached the limit of their elongation their apices often 

 become slightly enlarged and bear 2—3 conidia standing nearly side by 

 side. 



The species may be arranged as follows : 



A. Conidia oblong or cylindrical. 

 a. Spots white or gray ^1 — 11. 



6. Spots hroion or brownish, 12 — 30. 

 c. Spots indefinite or none, 31 — 35. 



B. Conidia ovate. 



a. Conidia continuous, [Ovidaria, Sacc.) 36 — 39. 

 h, Conidia uniseptate, 40. 



A. CONDIA OBLONG OR CY^LINDRICAL. 



a. Spots white or gray. 



1. Eamtjlaria aquatilis, Pk. 35th Eep. X. Y. State Mus., p. 142. 

 Spots small, pale. Hyphse epiphyllous, tufted, very slender, short, 



fiexuous, hyaline. Conidia subfiliform, narrowed tovrard one end, some- 

 times 3—4 nucleate, colorless, 20—30 x 2i— 3 



On living leaves of Potamogeton lonchites, Sept., Albany, N. Y. (Peck.) 



The tufts are numerous, very small and white. When magnified 

 they have a stellate appearance, the conidia diverging like rays. 



2. Ramularia Print, Pk. (ined.) 



Amphigenous, on suborbicniar, white, definitely limited spots (2—3 

 mm.), and mostly surrounded with a purplish discoloration. Hyphae 

 fasciculate, simple, entire or faintly denticulate above, 12—20 x 2i M. 

 Conidia oblong-cylindrical, continuous, of about the same dimensions as 

 the hyphse. 



On leaves of Prinos [Ilex] verticellata, Casoga, N. Y., July (Peck.) 

 In the specimens received from Peck, the Bamularia was accompa- 

 nied by a Cladosporiur)i with scattered brown hyphse 50—70 M long. 



3. Ramularia Diervill^, Pk. (ined.) 



Hypophyllous, on small, round, white spots, 2 — 3 mm. in diameter, 

 with a narrow, slightly raised, dark colored border. Conidia Cylindrical, 

 continuous or faintly septate, borne on short, fasciculate hyphae. 



On living leaves of Diervilla trifida, Adirondack Mts., IS'. Y. (Peck.) 



4. Ramularia Celastri, E. & M. Am. Kat. Dec. 82, p. 1005. 



Spots small, white, border dark brown. Hyphse subhyaline, fascicu- 

 late, 24 X 3 !J-. Conidia oblong-cylindrical, hyaline, guttulate, uniseptate, 

 18—21 X 3 



On leaves of Celastrus scandens, Pennsylvania (Martin), Kansas 

 (Kellerman), Wisconsin (Trelease), who finds the conidia 1—4 celled. R. 

 Celastri, Pk. in 33d Rep. is the same. 



5. Ramularia Plantaginis, E. & M., 1. c. 



Spots small, round, whitish, border reddish brown. Hyphae fascicu- 



