PAPERS GIVING RUSTS OF NORTH AMERICA. 'J07 



2846. 36. C. U. punctuosum, Lk. 93, Syn. Car. 474, [as U.] scutcllata, also 



Bethlcliem on Euphorbia hyperici folia. 

 (474. 16. [Urcdo] scutellata. More or less frequent on Euphorbia 

 hypericifolia.) 



Schwcinitz had an ciitrv in liis Carolina list, which is nowhere 

 referred to in the later one. It can be entered here, as it is the same 

 rust, altlioui^h he placed it under his section " Rubigo." 



(459. I. [Uredo] Euphorbise. Not rare on leaves of Euphorbia 

 niaculata.) 



Represented by some four pieces of branched stem about 3 cm. 

 long, with leaves, more or less fragmentary, inflorescence and mature 

 seeds, showing a few, scattered uredinia, jjiaced loose in a mounted 

 packet, and by an original packet, containing a few similar frag- 

 ments, labelled " Caeoma (Ured) punctuos in Euphorb hypericif 

 Beth." Another original packet containing fragments of branched 

 stems about 2 cm. long, with leaves and inflorescence, but not mature 

 seeds, was first labelled '' Caeoma (Ur) Euphorbia" hypericif non 

 scutellat Sal & Bet," then the specific name was cancelled and " punc- 

 tosum " substituted. The latter packet doubtless represents the 

 Salem collection and the former one the collection from Bethlehem. 

 There is no material or packet for the collection on E. inaculafa. 



The rust is Uromyces procminens (DC.) Pass., showing vary- 

 ing proportions of uredinia and telia. In the interim between his 

 two lists Schweinitz had ascertained that tiie European name used 

 in his earlier list, " U. scutcllata," applied to another rust w^hich he 

 had not found in x-Xmerica. The hosts are ChatiKcsycc Prcslii (Guss.) 

 Arth. {Euphorbia Prcslii Guss., E. hypericifolia having recently 

 been ascertained to be a more southern species) and Chamccsycc 

 maculata (L.) Small {Euphorbia wacuJata L.). 



2847. 37. C. U. Leguminosarum, Lk. gj. Syii. Car. 476, [as U.] Viciae, on 



Vicia Faba, Bethlehem and Salem. 

 (476. 18. [Urcdo] Viciae. Fabje. On the stems of Vicia Faba. 



There is no mounted specimen or original packet to represent 

 these entries. 



