Pdnisific FKiiiji of [ll'nioix. "iOl 



This sj»('cies is cert;iiiily floscly related to Pinrinld rnhiijo- 

 vern. Indeed, it is sciireely possible to separate them, except 

 by the terminal projections of the telentospores in P. coronata. 

 and these are present in varyin«4" degrees, sometimes (as in No. 

 2884) nearly wanting. 



P. emaculata, Si Inv. 



II., III. Mostly cpigenous. sometimes amphigenous. Sori 

 small, rather jn-ominent. mostly very numerous, irregularly scat- 

 tered or er(»wded. rarely confluent on the leaves, but on the 

 sheaths forming long, irregular lines, black, rather early erum- 

 ))ent but long surrounded by the ruptured epidermis: uredo- 

 spores subglobose, ejjispore rather thin, sharply but minutely 

 echinulate. 15-24 ^: teleiitos])ores elliptical or broadly clavate, 

 slightly constricted, vertex strongly thickened and obtusely 

 pointed or rounded, narrowed below, smooth, not deeply col- 

 ored. ir)-21 by 80-48 u; pedicel once to once and a half as long 

 as the spore, tinted. 



Entirely without spots; at first sori entirely covered or sparingly 

 erumpent, then often confluent, minute, abbreviated, narrow, parallel, 

 often acuminate at both ends. Spores black, rather small, when im- 

 mersed in water fnscescent. Everywhere on species of Panicum, espe- 

 cially P. pubrscmx in fields.— Schweinitz, N. Am. Fung., Xo. 2912, ]>. 295. 



On Trirtifijils s('sh'ri<>i(h'>i: Union, Nov. 4. 2274. Enaji-osfis 

 p('ctin<((:ea: Union, Oct. 21, 1908. Panicum capillari' : LaSalle. 

 Sept. 14, 1587. II.. Sept. 29, 6288; Rock Island, Sept. 21, 1609, 

 Sept. 28. 1628, Sept. 26, 1661, Sept. 27, 1679: JoDaviess, Sept. 

 19, 5998: Stephenson, Sept. 21, (')059: Ogle, Sept. 28, 6142, II.. 

 III.: Fulton, Oct. 1, 1768. P. rltrjafKni: Lee, Sept. 9.5760: 

 Ogle, Sept. 22, 6109: Rock Island, Sept. 27, 1695, 



On r<(tiirnin rirf/afinii the telentospores have in each seg- 

 ment a small circular nuclear spot, and the pedicels are nearly 

 cohu'less. On Tricitspis se.slen'oides (1^0.22114:) and KnKirostis 

 IK'ci'nutcf'd (No. 1908) the sori are mostly hypophyllous, and the 

 telentosjiores are often lighter colored, with hyaline i)edicels. 



