UREDINACEAE 421 



spots ; teleutospores cylindrical, slightly clavately thickened 

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

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

 reddish-orange ; secondary spores globose, 4-6 /*, 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. Antari., ii. 

 p. 450. — Aecidia generally scattered over the entire under 

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

 spores polygonal, 20-40x16-24 /x, 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. ; 

 spoVes very abundant, in long series, subcuboid, 28-40 X 

 16-19 («.; spermogonia minute, depressed, superficial, 

 100-120 /x diam., 30-40 /* high. 



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

 densely gregarious, numerous, generally covering the inner 

 surface of cone scales, brownish, hemispherical, or polygonal 



