PAPERS GIVING RUSTS OF NORTH AMERICA. 227 



The rust is the ?ecial stage of Puccinia Grossular'uc (Schum.) 

 Lagerh., having tcha on many species of Carcx. 



2883. 7i. C. A. Hypericatum, L.v.S., Syn. Car. 431. Lk. 159, here and there, 



also near Pliiladelpliia. 

 (451. 22. [-•T'lcidium] Hypcrici frondosi Sz. 



A. sul)orl)icular (orange), pcridia cyhndric, elevated (white 

 when dry), spores white. 



Frequent on loaves of Hypericum frondosum. Narrows of 

 Yadkin, very beautiful, bright orange, making rather small but 

 numerous spots sometimes almost devoid of the distinctive color. 

 Peridia elevated as in /Ez. Rhamni, to which somewhat related. 

 Spores oblong, wliite, rather pellucid.) 



Represented by a dozen or so leaves, partly attached to short 

 stems, mounted loose in a packet, the leaves showing a few small, 

 circular groups of white, cylindric jecia, and by an original packet 

 containing a few leaves labelled inside "zEcidium Hyperici frondosi 

 Narrows of Yadkin," and outside 'SEcidium Hypericatum LvS Hyp 

 frond Narrows of Yadkin Carol." 



The host agrees with a phanerogamic specimen, labelled by 

 Schweinitz " Hypericum frondosum, Salem," now in the collection 

 of the Philadelphia Academy, which is identified as H. prolificum L. 

 The rust is the secial stage of Uromyces Hypcrici-frondosi (Schw.) 

 Arth.. and is undoubtedly on Hypericum prolificum L. {H. frondo- 

 sum Michx.). The combination JEcidium {Cccoma) hypericatum 

 Schw. was made on page 309 of the later work. 



2884. 74. C. A. Violatum, Lk. 158, Syn. Car. 439, on leaves of various 



violets of Carolina and Pennsylvania, e. g., V. cucullata, obliqua, 

 hastata, and the like. 

 (439. 10. [^cidium] Violae Conspect. fung. Nicsk. p. 118. Occurs 

 especially on Viola hastata, but also on other stemmed violets.) 



Represented by two specimens mounted, one of them being the 

 end of a stem with two folded, cordate leaves and one young seed 

 capsule, having secia on the blade, petioles, stipules, and stem, and 

 by a corresponding empty packet labelled " .llcidium \'iolatum V. 

 hastatcv LvS Salem." 



