APPENDIX. 199 



ii. p. 904. — On leaves of Purnassia palustris, near Glasgow. 

 (Dr. Greville.) The original specimen is in the Edinburgh 

 Herbarium. 



iEcidium Geranii, DC. Cranesbill Cluster-Cups; 

 spots yellow and purple ; peridia in circiuating clusters ; spores 

 yellow, at length brown. — On the under surface of leaves of 

 Geranium pratense and 6r. dissectam. Not common. Said to be 

 a condition of Uromyces Geranii. 



iEcidium Menthse, DC. Mint Cluster-Cups; spots 

 obliterated ; subiculum thickened ; peridia scattered, emersed, 

 or aggregate immersed ; spores orange, elliptic. — On various 

 Mints. Common. Said to be a condition of Puccinia Mentha. 



iEcidium Scrophularise, DC. Figwort Cluster-Cups ; 

 spots yellowish ; peridia in roundish circinate clusters (rarely 

 scattered) on the under surface; spores whitish, becoming tawny. 

 — On the leaves of Scrophularia aquatiea. Thame and Sydenham, 

 Oxon. Said to be a condition of Uromyces Scrophularia. 



.iEcidium Pedicularis, Lobosch. Red-Rattle Cluster- 

 Cups; spots obliterated, subiculum thickened; peridia thickly 

 and irregularly clustered, subimmersed ; spores dirty, pallid 

 orange. — On petioles, leaves, and stems of Pedicularis palustris. 

 Not common. 



iEcidium Primulse, DC. Primrose Cluster-Cups ; 

 spots obliterated ; peridia solitary, scattered, and crowded, hypo- 

 genous ; spores whitish-yellow. — On the under surface of leaves 

 of Primroses. Not common. May. Said to be a condition 

 of Puccinia Primulce. 



iEcidium rubellum, Pers. Dock Cluster-Cups; spots 

 purple ; peridia circiuating, centre free ; spores yellowish-white. — 

 On leaves of Dock and Sorrel. Not uncommon in moist localities. 

 May and June. Said, to be a condition of Uromyces Rumicum. 



iEcidium Avicularise, Kze. Knotgrass Cluster-Cups ; 

 spots purplish or obliterated, peridia in small irregular clusters, 

 or circinating ; spores pale yellowish. — On leaves and stems of 

 Knotgrass, Polygonum aviculare. Said to be a condition of 

 Uromyces Polygoni. 



iEcidium Ari, Berk. Wake-robin Cluster-Cups ; spots 

 round, confluent ; peridia circinating, not crowded, central ones 

 abortive. — On leaves of Arum maculatum. Not common. June 

 and July. 



