PAPERS GIVING RUSTS OF NORTH AMERICA. 253 



not labelled until after Scluveinitz became a resident of Pennsyl- 

 vania. \Vc may safely assume that the packet with its fragment 

 represents a collection made at Bethlehem, Pa. Unless this were 

 true the asterisk before the number would have to be considered' 

 erroneous, and the omission of " Syn. Car. 478" unintentional. 

 Furthermore, if Salem were the place where the collection was 

 made, the record would have been Salem & Bctlil., as may be seen' 

 under nos. 2832, 2846, 2875, 2888, 2917, 2919, 2927, etc. Some ob- 

 servation at Salem may have been in mind, but willi no specimen 

 preserved. 



♦2932. 28. P. iiivcstita, L.V.S., frequent, observed witli .1101(11001 gnaphali- 

 tatum on the tomentose leaves of Gnaphalium polycephalum, 

 Bethlehem. Always hidden by the tomentum. 

 P. without spots ; sori minute, sparse, roundish, very black, scarcely 

 siiowing at first through the tomentum, sometimes aggregated- 

 confluent. Spores compact, very dark. Surface of the sori as if 

 furrowed. 



Represented only by an empty packet labelled " Puccinia bives- 

 tita LvS in avers pag Gnaphalii polycephali cum .licidio vulgari 

 Beth." There is no reason to doubt that this record applies to the 

 rust still passing under Schweinitz's name, P. investita, which pos- 

 sesses aecia and telia, and is identical wnth no. 2873, ^^'^^ "ow better 

 called P. gnaplialiata (Schw.) Arth. & Bisby. 



2933. 29. P. Galii, L.V.S., Syn. Car. 499, Lk. p. 76, a rare species but suffi- 

 ciently distinct — not a Sclerotium. 



(499. 14. [Puccinia] Galii Sz. (near Sclerotium). 



P. erumpent, globose-ovate, dark fuscous, spores clavate, biloc- 



ular, short pedicelled. 



On living leaves of Galium purpureum, but more perfect on dead 



ones, then a line long. — Tubercle-like it pushes up the epidermis, 



which surrounds it. Spores a little darker in color than those of 



Puccinia graminis.) 



Represented only by an empty packet, labelled on the inside 

 " Dicaeoma Galii Salem," and on the outside " Puccinia Galii LvS 

 Salem." There is no specimen of this number at Philadelphia, or 

 in the Herb. Curtis at Plarvard University or in the Michener Col- 

 lection at Washington. 



PROC. AMER. PHIL. SOC, VOL. LVII. R. JI'LY 17 . I918. 



