230 ARTHUR-BISBY— TRANSLATION OF SCHWEINITZ'S 



then tvirned the packet and placed on the outside his final record, 

 still with the host as R. villosus. It is impossible even to surmise 

 why he used R. strigosiis in the last printed account. The rust has 

 never been found on R. strigosiis in all the intervening years, and 

 the use of that name by Schweinitz may certainly be taken as an 

 error. 



The rust itself is of special interest. Until very recently it has 

 been identified with a similar rust of Europe, Gynniocoiiia intcr- 

 stitialis (Schl.) Lagerh., a long cycle, autoecious form, as proven by 

 cultures. The same long-cycle form also occurs in this country, as 

 also proven by cultures. Recently investigations by Kunkel have 

 shown that there also occurs in this country a short-cycle form, 

 whose telia are indistinguishable in appearance from the aecia of the 

 long-cycle form, but dififer in their mode of germination, and that 

 only the short-cycle form has so far been observed in the southern 

 states, although both forms occur northward. The senior author 

 has recently (Bot. Gaz. 63:504. 1917) erected a new short-cycle 

 genus with Schweinitz's Salem collection as the type, so that it be- 

 comes Kunkclia iiitciis (Schw. ) Arth. The combination JEcidium 

 (Ccronia) Iiiiniiuititiii was made on page 309 of Schweinitz's later 

 work. 



2888. 78. C. A. Podophyllatum L.v.S., Syn. Car. 435. Link on account of 

 my inaccurate words in Syn. Car. — " Spores bilocular," inserted 

 by a slip of the pen from the description of Pucc'uiia Podophylli, 

 an entirely different fungus — has wrongly placed this /Ecidium, 

 the most remarkable of all, among the Puccinias. Ours usually 

 occurs with thick bullate spots, rendering the broad leaves of 

 Podophyllum contorted and deformed — with a diameter of 4-6 

 inches. Pseudoperidia located in the center, slightly elevated, 

 very densely crowded, rather large, and innumerable. The mar- 

 gin of the spot, however, always sterile. Spores are not bilocular. 



(435- 6. [^cidium] Podophylli Sz. 



A. very large, orbicular, at length diffuse, golden 3'ellow, very 



dense, spores somewhat elevated, bilocular. 



Usually it extensively and injuriously affects the leaves and 



stems of Podophyllum, attracting the eye by its beautiful color.) 



Represented by four pieces of leaves about 4 by 6 cm., mounted 

 loose in a packet, which are well covered with large groups ot aecia, 

 and by an original packet containing a niunber of large fragments of 



