216 ARTHUR-BISBY— TRANSLATION OF SCHWEINITZ'S 



Frequent on the leaves of Ipomoea (Convolv.) pandurana. Per- 

 idia thick, the loose epidermis larger than in almost any iEcidia, ex- 

 cept cornutum and cancellatum. Spores rather small, oblong.) 



Represented by a mounted stem, 7 cm. long, and part of two 

 leaves, and by an original packet, containing ample material, and 

 labelled inside "yEcidium Ipomasae in pandurata & lacunosa Salem," 

 and on the outside " /Ecidium Convulvuliat LvS. Salem & Beth in 

 Conv. pandurat." 



The fungus is certainly and wholly Albugo I ponuece-pandurance 

 (Schw.) Swingle one of the Peronosporales, and not a rust. The 

 name was changed to Ecidium {Cccoma) convolvulatum at page 309 

 of the later work. 



2867. 57. C. A. Compositarum, Lk. n. 139, and frequent in Pennsylvania, 

 a Prenanthis on Krigia, Salem, Syn. Car. 434. 

 /3 Eupatoriae, Bethlehem, frequent on E. purpureum. 

 (434- 5- [Ecidium] Dandelionis Sz. 



Why not merely a variety of Ecidium prenanthis, to which 

 it is very similar? Spores subglobose, without septum and ped- 

 icel, chestnut-brown. On leaves and stems of Tragopogon Dan- 

 delion. Rare.) 



Represented by an original packet, containing a few very small 

 fragments of a leaf with many jecia, and labelled inside "^'Ecidium 

 Eupatorias maculatse Bethl," and on the outside "Ecidium Eiipa- 

 toriatum LvS Beth," with " compositatum " written above. There 

 is no packet for the other entry, and no mounted material for either, 

 although there is indication that there may once have been a mount 

 where pin marks now show. 



The fficia on Eupatorhcm are doubtless to be assigned to the 

 widespread rust, Puccinia Eleocharidis Arth., very common both 

 north and south, the uredinia and telia being on various species of 

 Eleocharis, and the secia on various species of Eupatoriuni, includ- 

 ing both E. maailatum L. and E. purpureum L. As the fragment 

 in the original packet shows the leaf to be smooth above with minute 

 sparse pubescence beneath and not at all scabrous, the host is doubt- 

 less E. purpiiremn and not E. maculatum, the conclusion evidently 

 reached by Schweinitz. 



The identity of the form on Krigia is somewhat uncertain. The 



