

48 The Botanical Gazette. ' [February, 



two to six times as long as broad, white or slightly pinkish, 

 margin usually irregularly lacerated. Spores subglobose, 

 oblong or ovate, 20-26/a in their longer diameter. — On leaves 

 of Liatris punctata. Great Falls, Montana, July, 1888. 



This appears to be the AL. Compositarum Mart. var. Liatri- 

 dis Webber, in his Cat. FI. Nebr. 1889, p. 70; but the 

 elongated pseudo-peridia seem to distinguish it from any of 

 the forms of M. Compositarum. Webber speaks of the 

 pseudo-peridia being very short, so that what he has de- 

 scribed may be another thing. 



Ak'idium Cleomis Amphigenous, on brownish, slightly 



thickened spots. Small, about 0.33 mm. diam. closed at first, 

 then open but scarcely recurved, margin sublacerate. Spores 

 irregularly globose or subovate, 15-20/< diam. — On Cleome in- 

 tegrifolia. Helena, Montana, May, 1887. Anderson, no. 3. 



JEeidinm Chrysopsidis Spots thickened, pale, immar- 



gmate, 2.5-5 mm. diam., mostly on one side of the midrib, 

 but sometimes extended entirely across the leaf and longi- 

 tudinally for 1 cm. or more. y£cidia irregularly scattered or 

 sometimes subconcentrically arranged so as to leave a vacant 

 space in the center, entirely buried, showing at first only as 

 slight mammiform projections, on the surface of the spots, 

 finally, with a round opening above and either without any 

 projecting margin or at most with a very slight and narrow one. 

 Spores yellow, mostly ovate-oblong, 18-23 x 11-1 6/a. Peridial 

 cells mostly ovate, coarsely cellular, 30-35 x 15-25//. — On 

 leaves of Chrysopsis villosa. Sand Coulee. Cascade co.. 



J 



Mo 



JE 



near this if not identical with it. 



^ Pt'stalozziVUa Anderson! Ell. and Evrht. (Plate VII, figs. 



12-14.). — Acervuli amphigenous, gregarious, not on definite 

 spots, small, convex-hemispherical, black. Sporules ovate- 

 elhptical, hyaline, continuous, with a spreading, sub-3-parted 

 crest of hyaline bristles or threads. — On fading leaves of 



mm or Asclepias. Sand Coulee, Montana, leg. F. W. 

 Anderson. 



Apocy 



'field, N. J 



Explanation of Plate VII. 



a f ig „ L r V" W/ " "j**""* 1 ** EU- and Anders., natural size on dead stems of 

 Astragalus Drummondu; J, sporodochium of same magnified; 8, vertical section 



