196 MICROSCOPIC FUNGI. 



jEcidium crassum, Pers. Buckthorn Cluster-Cups; 

 spots yellow-brown, subiculum thickened; peridia crowded into a 

 roundish heap, at first globose, yellow, at length open ; spores 

 orange. — On Rhamnus catharticus and R. frangula. Common. 

 Said to be a condition of Puccinia coronata. 



JEcidium Periclyraeni, DC. Honeysuckle Cluster- 

 Curs ; spots variegated, yellow and brown, subiculum thickened ; 

 peridia sometimes elongated, in roundish or effused heaps; spores 

 orange. — On the under surface of Honeysuckle leaves. Not 

 common. June to August. Possibly only a variety of the last. 



/3. Poculiforma. 



^cidium Calthge, Grev. Marsh-Marigold Cluster- 

 Cups; aggregate ; peridia somewhat campanulate, with numerous 

 minute marginal teeth; spores bright orange, sublogose or oval. 

 — On leaves and petioles of Calthapalustris. Margin of peridia 

 pale and brittle. Rare. Spring, Said to be a state of Puccinia 

 CaltluB. 



iEcidiumRanunculacearum, DC. Crowfoot Cluster- 

 Cups; spots obliterated, subiculum thickened ; peridia in irregu- 

 lar heaps, densely crowded together ; spores orange. — On leaves 

 of various Ranunculacea ; very common on R. Ficaria, not un- 

 common on R. renens, more rarely on R. acris and R. bulbosus. 

 Sprinsr. Said to be a condition of Uromyces Ficaria. (Plate 11. 

 figs. 12-14.) 



JEcidmm Gralii, Pers. Bedstraw Cluster-Cups; spots 

 linear or oblong, obscurely brown; peridia scattered, rarely agsre- 

 gate, dentate, whitish; spores white. — On the leaves of Galium 

 verum and G. mollugo. Said to be a state of Puccinia Galiorum 

 (Plate IT. figs. 15-17.) 



JEcidium Bunii, DC Pig-nut Cluster-Cups ; spots 

 obliterated, subiculum thickened ; peridia in irregular subrotund 

 or oval heaps; spores orange. — On Bunium bulbocadanum. Spring. 

 Said to be a state of Puccinia bulbocastuni. 



iEcidium Pirnp" ; nel]8e, Kirch. Phipinella Cluster- 

 Cups; spots obliterated; peridia in irregular clusters, cup-shaped; 

 spores yellowish-brown. — On leaves of Pimpinella Saxifraga. Said 

 to be a condition of Puccinia Pimpinella. 



iEcidium Valerianacearum, Dub. Valerian Cluster- 

 Cups ; hypogenous. rarely cauline, spots on a thickened subcir- 

 cular or oblong base ; peridia scattered, more or less crowded, 

 cup-shaped, tawny, margin erect, denticulate; spores dirty-yellow. 



