212 Il/inois Staff Ldhorafori/ (ffNafiiral Hisfori/. 



])}' different authors assigned to Calyptospora, Melanij)>iorelh(. 

 Phragnwsjiora and T/ickopsora. Admitting all these as genera 

 of equal rank, the characteristics may he given as follows: 



Teleutospores produced ))eneath the cells of the epidermis: 



Teleutospores one-celled Mel am psora. 



Teleutospores divided Phragmospora. 



Teleutospores produced i>i the cells of the epidermis. 



Teleutospores one-celled, colorless Mklampsorella. 



Teleutospores divided, colored: 



Sori small, with uredo Thekopsura. 



Sori )»road]y confluent or effused, without uredo, 



Calyptospora. 



With the single excei)tion of MehDtipsoni 'Gopppertiatta 

 ( Cfdijpfosponi (r(i'pp<'}ii((H(( , Kiihn ) (ui various species of Vac- 

 ciiihtiii^ no supposed aecidium form has been found; in this 

 case the almost universal association of the teleutoforiu on 

 l^tn-c/ii/iiin, and one or more species of Periderniiuin on Pin us 

 and Ahies^ seems to strongly indicate their genetic I'elation. 

 Other observations corroborate the supposed connection, so that, 

 in Europe at least, we may accept the matter as a fact that this 

 species of MeJampsoi-<( and ^Ecidiiini ( Pcfideryiihttn ) cohinitKirc 

 Alb. & Schw., are alternate forms. In America, Perideniiii(in 

 halsanieinii. Peck, seems to l»e associated with the teleutoform, 

 but whether P. hahaiueuin and /''. rnlniiniare are specitically 

 identical has not l^een determined. See Farlow, Appalachia, 

 Vol. 111. (1S84) p. 241 et se^p 



M. epilobii, ( Pers. ) Fkl. 



II.. III. Hypogenous. Uredosori scattered, minute, hemi- 

 spherical, then opening by a circular stonui; uredospores obo- 

 vate, sometimes varying to su])globose and oblong, epispore 

 thin, sharply echinulate, each produced on a pedicel, orange- 

 yellow. 12-15 by 14-18 ^•. teleutosori irregular, scattered, often 

 confluent in irregular crust-like areas, becoming chestnut- 

 brown, or at length darker; teleutospores mostly one-celled, 

 often divided by a septum which is horizontal, oblique, or ver- 

 tical, cuboidal or elongated, epispore thin, smooth, 21-39 y- long. 



