i885.3 



NORTH AMERICAN R AMULARIiE. 



79 



On leaves of Actcea alba, Iowa, June (Hoi way). Allied to B. didyma 

 Unger, but differs in its mostly shorter, straighter hyphse and smaller 

 oblong conidia. 



2S. Ramularia decipiens, E. & E., Jour. Mycol. I, p. 70, 

 Spots orbicular, gray, i— i cm., with a darker colored, narrow, raised 

 border. Tufts amphigenous, scattered, whitish. ILyphse fasciculate^ 

 issuing in dense clusters through the stomata of the leaf, hyaline, contin- 

 uous, nearly straight, entire or subdenticulate above, 30— 50 x3 z^-. Coni- 

 dia clavate oblong or simply oblong or more commonly cylindrical, 1-sep- 

 tate and mostly slightly constricted at the septum, exceptionally 2 or 3- 

 septate, 15—35 x 6—8 /^-. ends obtusely rounded. 



On leaves of Bumex crispus, Ohio, June 18S3 (Kellerman.) 



29. Ramularia Ranunculi, Pk. 35th Rep. N Y. State Mus., p. 14L 

 Spots suborbicular, scattered, brown. Hyphse hypophyllous, tufted, 



colorless, subflexuous. Conidia oblong, sometimes narrowed towards 

 one end, continuous or 1-septate, occasionally catenulate, colorless, 12— 

 50 X 8—13 /J-. 



On living leaves of Banunculus recurvatus. West Albany, IST. Y., 

 June (Peck). We have seen no specimens, but should suspect this might 

 be a form of B. didyma, Unger. 



30. Raimulaeia Ulmari^, Cke., Grev. IV, p. 109. B. Spirceoe, Pk. 

 34th Rep. Y. State Mus, p. 46. 



"Tufts grayish- white, forming irregular, ovate or angular spots, 

 mostly circumscribed by the veins. Flocci very short. Spores cylin- 

 drical, obtuse, simple, hyaline, 30—40 x 7 The above is copied from 

 Grevillea, 1. c. 



The specimens in Rabh-Winter, F. Eu. 2887, have reddish-brown, sub- 

 angular spots (1 — 3 mm.) with a narrow, reddish purple, slightly raised 

 border, the center of the spots becoming, at length, dull white. Hyphse 

 in scanty tufts, short, continuous. Conidia oblong-fusiform, or cylin- 

 drical, 12 — 30 X 3 /^-, the shorter ones simple or 1-septate, the longer ones 

 2 — 3-septate. Of Winter's specimens, those in envelope marked [a) have 

 the spots more indefinite and surrounded with a broad, purple, shaded! 

 border, without any very distinct raised margin. We have seen no spec- 

 imens of B. Spiroece. Pk., but, judging from the description, it seems to. 

 us better to place it as a synonym, at least till the question of its identity 

 with B. Ulmarice, Cke., can be decided from the examination of authen- 

 tic specimens. It will be noted that Winter's specimens have the conidia; 

 mostly septate and narrower than stated by Cooke in Grevillea, and cor- 

 respond well to the description of B. Spiroeoe, Pk., on Spiraea opulifoliai. 

 c. Spots none or indefinite , 



31. Ramularia Desmodii, Cke., Hedwigip., Mar. 1878, p. 39. Fusid- 

 ium Bavenelianum, Thuem., in Flora, (1878 no. 12.) 



Hypophyllous, spots obsolete but leaves mottled with pale yellow 

 above. Hyphse forming irregular patches at first limited by the veinlets, 



