UREDINACEAE 421 



spots ; teleutospores cylindrical, slightly clavately thickened 

 upwards, often branched, up to 100 //, long, and 9-12 ft 

 broad, having up to 12 cells; epispore hyaline, contents 

 reddish-orange; secondary spores globose, 4-6 ft, rufous- 

 orange. 



Aecidium, Pers. Pseudoperidium cupulate or sub- 

 urceolate, rarely cylindrical, generally pale-coloured, margin 

 often crenate or laciniate and revolute; aecidiospores 

 globose or angular, continuous, most frequently orange- 

 yellow, catenulate, smooth, or verrucose. 



Uredo- and teleutospore conditions, if present, not 

 correlated with the Aecidium. 



Aecidium magelhaenicum, Berk., Hook., FL Antart., ii. 

 p. 450. Aecidia generally scattered over the entire under 

 surface of the leaf, cylindrical, whitish, margin incised ; 

 spores polygonal, 20-40X16-24 ju, epispore hyaline, 

 verruculose, contents orange. 



Aecidium ornamentale, Kalchbr., Flora, 1876, p. 362. 

 Aecidia very numerous, occupying the entire surface of the 

 branch, pale flesh-colour, concave or often obconic, or 

 narrowly cylindrical, margin slightly torn ; spores angularly 

 globose, orange-red. 



Aecidium esculentum, Barcl. Pseudoperidia gregarious, 

 immersed, conoid, for a long time closed, i mm. diam. ; 

 spores very abundant, in long series, subcuboid, 28-40 x 

 1 6-1 9 /x.; spermogonia minute, depressed, superficial, 

 100-120 /z diam., 30-40 p high. 



Aecidium strobilinum, Rees, Rostp., p. 105. Aecidia 

 densely gregarious, numerous, generally covering the inner 

 surface of cone scales, brownish, hemispherical, or polygonal 



