PAPERS GIVING RUSTS OF NORTH AMERICA. 211 



p. Subgenus .ecidium. 



*2857. 47. C. A. Convallariatum, Lk. 114, on leaves of Smilacina racemosa, 

 Bethlehem, very rare. 



Represented by a mounted specimen of the middle part 4.5 cm. 

 long, of a 2.5 cm. wide leaf, bearing beneath about ten small groups 

 of circinating secia, and by an empty packet labelled "^cid Con- 

 vallariatum Salem." 



The rust is an heteroecious form, without doubt, and is usually 

 considered to be the aecial stage of Puccinia Majaiithce (Schum.) A. 

 & H., occurring in both Europe and America on Phalaris and other 

 grasses, but the genetic connection has not been fully established for 

 the American material. 



We must assume that " Salem " on the original packet was an 

 error for " Bethl," in view of the printed record, which is starred 

 and does not mention Salem. 



The host was doubtless as stated. Vaguer a racemosa (L.) 

 Morong (Smilacina racemosa Desf.) 



2858. 48. C. A. Uvulariatum, L.v.S., Syn. Car. 453, hardly C. Alliatum as re- 

 ferred by Link, n. 116, for it differs in having spots rather small, 

 never exceeding a fourth of an inch, also in being white. 



(453. 24. [.(Ecidium] Uvularise Sz. 



A. orbicular, white, delicate, peridia excentric, circinate, white, 



spore-mass white. 



Here and there on the leaves of Uvularia perfoliata. Peridia 



crowded in concentric circles, none in the center itself. Similar to 



A. Allii ursini, but the color in that is yellowish.) 



Represented by the proximal half of two perfoliate leaves at- 

 tached to the 2.5 cm. stem, mounted, one of the leaves bearing a 

 single, rather diffused group of secia, and also by an empty packet, 

 labelled on the inside " ^cidium circinatum Rhlg In Uvularia perf ol 

 & Polygonatum Salem," and on the outside " iEcidium Uvulariatum 

 LvS. Salem." 



This rust has the same uncertain status as the preceding one, but 

 is generally considered the secial stage of Puccinia Majanthcc 

 (Schum.) Arth. Schweinitz's name was changed on p. 309 of his 

 later work to Alcidium (Ccvoma) iivulariatunt. 



