I'd rnsillc Fiiiif/I of [U'nioi^. 223 



ever, iji the s;iiiie way. The spores have thinner walls, are 

 lighter colored, and are said to be more elongated. In the lat- 

 ter respect, however, the s])ecimens collected by Arthur have 

 spores commonly ((iiadrangular, and considerably longer than 

 wide. A Massachusetts specimen agrees with the typical jE. 

 pimcfafttiii except that the spermagonia are contined to the 

 lower side of the leaf. That on Hepiificn friloha is distinctively 

 ^E. pimctation. 



M. actsese, (Opiz.) Wallr. 



iEcidia orderless or in circular gr(jups, on ])ale s})()ts which 

 later are blackish in the centre; pseud()})eridia short-cylindrical, 

 with a white tube and many times split and recurved border; 

 spores polygonal, pale yellow, fine-warty, l(>-20 i*- in diameter 

 by 30 /^.—Winter, Die Pilze, p. 268. 



On Adcea : Jackson, April 25, 4288. 



The description is taken from Euro])ean s[»ecimejis; thosc^ 

 from Illinois are not fully developed. l)ut seem to be the same. 



M. dicentrae, Trelease. 



Hypophyllous. ^cidia uniformly and remotely scattered 

 over the entire surface, rather large, prominent, border regu- 

 larly segmented and quite uniformly and abruptly rolled, firm; 

 spores subglobose or elliptical, epispore thin, minutely tubercu- 

 late, 10-13 by 11-16 ^: spermagonia large, disk-like, rather 

 distant in a single row on the margin of the leaf, reddish brown. 



On Dicenfra cKcullariu: Jackson, A})ril 20, 4195, April 21, 

 4211, April 25, 4289, Ai)ril 27, 4345, April 28, 4360; Union, 

 April 24, 4252; McLean, May 22. 4731, May 23, 4753. 



M. Mariae-Wilsoni, Peck. 



Hypogenous, Spots small, definite, not thickened, yellow- 

 ish; aicidia small, short-cylindrical, border narrow, many times 

 split and recurved, subcircinating; spores subglobose or some- 

 what angular, epispore thin, minutely tnl)erculate, 11-15 ju; 

 spermagonia preceding and, with the tecidia, mostly on the 

 upper side of the leaf. 



