256 ARTHUR-BISBY— TRANSLATION OF SCHWEINITZ'S 



2939. 35- P. aculeata, L.v.S., Syn. Car. 489. P. podophylli, likewise com- 



mon on Podophyllum [in Pennsylvania]. Very distinct on ac- 

 count of the aculeate spores. 



(489. 4. [Puccinia] Podophylli Sz. 



P. rather large, subconcentric, chestnut black on yellowish spots, 



spores oblong, bilocular, aculeate. 



Here and there on leaves of Podophyllum. — Spores oval, under 



a lens yellowish, the points prominent, straight. Pedicel not distinct, 



very short.) 



Represented only by an empty packet, labelled " Puccinia aculeata 

 LvS in Podoph Sal & B." 



Owing to Schweinitz's slip of the pen in calling the spores of 

 ^cidium Podophylli (no. 2888) " bilocular," Link transferred that 

 form to the genus Puccinia, which necessitated a new name for the 

 present form, so he made a descriptive name from a very distinc- 

 tive character (1. c, p. 79). Schweinitz adopts the name, but evi- 

 dently considers himself responsible for the species, and, as in other 

 such cases, does not cite Link's work. Schweinitz's earlier name is 

 still in use for this rust. 



2940. 36. P. Lespedezse procumbentis, L.v.S., Syn Car. 497, Lk. p. 83, extra- 



ordinary species, and in Pennsylvania. 

 (497. 12. [Puccinia] Lespedezae procumbentis Sz. 



P. rather small, subpunctiform, sparse, somewhat fuscous, 

 erumpent, spores oblong, bilocular. 



Here and there on leaves of Lespedeza procumbens. — It lifts the 

 epidermis of the lower surface of the leaf into blisters, which rup- 

 tured are white, pellucid. Spores with septum situated exactly in 

 the middle of the spore, and the pedicel (white, rather long) is dis- 

 tinct from the spore.) 



Represented only by an empty packet, labelled " Puccinia Les- 

 pedesce procumbent LvS Salem." 



The senior author in his first publication on the subject of rusts 

 (Amer. Nat., Jan., 1883, pp. 77-/8) pointed out that doubtless 

 Schweinitz was led into the error of describing the spores as bi- 

 locular by looking at the dry spores under a magnification of about 

 seventy-five diameters. At any rate the microscopic details in 

 Schweinitz's description can be attested in this way. The greatly 

 thickened wall at the upper part of the teliospore, often equal to 

 half the spore's length, under these conditions takes on the appear- 



