238 ARTHUR-BISBY— TRANSLATION OF SCHWEINITZ'S 



mounted. One of these consists of parts of two apple leaves, cut 

 lengthwise, 5 or 6 cm. long, mounted, bearing many small groups of 

 aecia, and two similar pieces of leaves in the original packet, which is 

 labelled " Cseoma ^cid. Roestelites cancellat in Pyro malo arbores 

 maximas ad mortem segens 1829 Bethl." The other consists of two 

 ovate pear leaves (Pyrus coiuinimis L.), 6 cm. long, mounted, and 

 two similar, smaller leaves with another fragment in the original 

 packet, each leaf bearing one to three large groups of aecia, the packet 

 being labelled "2 Cseoma (Ceratites) ^cidium Rarst elites cancellat 

 in Pyro Bethlehem." 



The aecia on the apple leaves belong to Gymnosporangium Jiini- 

 peri-virginiancc Schw., and those on the pear leaves belong to G. 

 globosiim. 



2901. 91. C. R. Fraxinites, L.v.S., Syn. Car. 430, Lk. 170, .(Ecidium fraxini. 



Rather to be placed here ; here and there ; Bethlehem, on ash 



leaves. 

 (430. I. [^cidium] Fraxini Sz. 



A. peridia elevated into a depressed chestnut-colored cone, at 

 length splitting into the broad lacinise. It makes round chestnut 

 spots on the leaves, prominent beneath, flat above, surrounded by a 

 fuscous margin.) 



Represented by two lengthwise halves, 1.5 by 6 cm., of broadly 

 lanceolate leaflets, mounted, together bearing thirteen round groups of 

 aecia on much swollen dark spots, but too young to show open peridia, 

 and by an empty packet, labelled inside " Roestelia Fraxini In Frax. 

 Salem," with a later addition above " Cseoma Roestelites Fraxiiiifitm," 

 with " Roestelites " afterward crossed out, and labelled on the out- 

 side "/Ecidium (Ceratites) Fraxinites LvS Salem & Beth." 



The rust is the aecial form of Puccinia fraxinata (Link) Arth., 

 on species of Fraximis, having its telia on the marsh grass, Sparti)ia. 



[*]2902. 92. C. R. Botryapites, L.v.S. Very rarely observed on leaves of 

 Aronia botryapium, Bethlehem ; but where it occurs, rather fre- 

 quent. 

 C. entirely distinct — spots j'ellowish-buff, somewhat effuse. On the 

 under side the pseudoperidia appear central, aggregated as tuber- 

 cles, globose, yellowish-green, at first obtusely conic and partly 

 closed, at length somewhat open and much fimbriated at the 

 opening, the divisions chestnut-brown, flexuous. Spores scanty, 

 dark. Pseudoperidia few, even at times single. 



