PAPERS GIVING RUSTS OF NORTH AMERICA. 253 



not labelled until after Schweinitz became a resident of Pennsyl- 

 vania. We 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 & Bethl., 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 with no specimen 

 preserved. 



*2932. 28. P. investita, L.v.S., frequent, observed with ^cidium 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 

 showing 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 inves- 

 tita LvS in avers pag Gnaphalii polycephali cum .Iicidio 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 secia and telia, and is identical with no. 2873, and now better 

 called P. gnaphaliata (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 Harvard University or in the Michener Col- 

 lection at Washington. 



PROC. AMER. PHIL. SOC, VOL. LVII, R. JULY I? , IQiS. 



