PAPERS GIVING RUSTS OF XORTII AMERICA. 231 



leaves, bearing ?ecia, which is labelled 'M£cidium Podophyllat LvS 

 Sal & Beth." 



The rust is the c'ecial form of the long-cycle, autoecious species, 

 Puccima Podophylli Schw. (see no. 2939), on Podophyllum pcltatum 

 L. The combination JEcidium {Cccoma) podophyllatum was made 

 on page 309 of the later work. 



*2889. 79. C. A. tenuc, L.v.S., rather rare on leaves of Eupatorium agera- 

 toides, Bethlehem. 

 C. spots j-ello\vish, evanescent, very delicate. Pseudoperidia sparse, 

 slightly elevated, but, what is peculiar, erumpent on both sur- 

 faces, closed on the upper, open on the under. Spores pale. 



Represented by a mounted portion of leaf, cut 3.5 em. square, 

 bearing six or eight groups of secia, and by an empty packet, which 

 is labelled inside " .-Ecidium tcnue Nobis In fol ignot Deetwiler," 

 and afterward " Eupat. agerat " substituted for "ignot," and is 

 labelled outside " .-Ecidium tenue in fol Eupat ageratoid Dettyler." 



This is the recial form of Piiccinia tenuis (Schw.) Burrill, an 

 autoecious rust. The name is written .-Ecidiuiii {Cccoma) tenue on 

 page 309 of the same work. 



*2Sgo. 80. C. A. Euphorbije hypericifoliae, L.v.S., frequent on leaves of E. 

 hypericifolia, Salem and Bethlehem. It is not identical with C. 

 Euphorbiatum Lk., nor does it make the leaves degenerate. 

 C. spots small, deep purple on the upper surface, yellowish on the 

 lower. Pseudoperidia aggregated, subconically elevated, and 

 somewhat excavated. Spores orange. 



.\lthough this number is starred and the earlier work is not di- 

 rectly cited, yet the naming of Salem as a locality undoubtedly has 

 reference to Syn. Car. 455, which in fact must be considered the 

 basis of Schweinitz's new name. 



(455. 26. [.Ecidium] Euphorbise. Here and there on the leaves of 

 Euphorbia hypericifolia, but does not make them degenerate.) 



Represented by a mounted fragment of a leaf, about i cm. square, 

 well covered with 3ecia, and by an empty packet labelled "'.Ecidium 

 Euphorh. hypericif Salem." 



