APPENDIX. 195 



iEcidium Epilobii, DC. Willow-herb Cluster-Cups ; 

 spots obliterated ; peridia scattered, at length oval, wider above ; 

 spores orange, at length brown. — On the under side of leaves of 

 Epilobium monfamm, E. hirsutam and E. palustre, rarely on the 

 upper. Common. June to August. Said to be a state of 

 Puccinia Epilobii. 



iEcidium Thesii, Desv. Bastard-Toadflax Cluster- 

 Cups; spots obliterated; peridia scattered or biseriate; short, 

 cylindrical, margin irregularly toothed, erect ; spores yellowish, 

 then dingy. — On Thesium humifusum. Downs near Winchester. 

 July, 1864. Chipstead, Surrey, Oct. 14, 1864. (Plate 111. Ggs. 

 50, 51.) Said to be a state of Puccinia Thesii. 



iEcidium depauperans, Vize. Scattered - Violet 

 Cluster-Cups; spots none, peridia scattered, at first round, 

 becoming clone ated, parallel with the length of the stem ; spores 

 yellow. — On Viola cornuta. 



.iEcidium Soldanellse, Hornsch. Soldanella Cluster- 

 Cups; spots obliterated; peridia solitary, scattered over the 

 interior surface ; spores orange. — On the under surface of the 

 leaves of Soldanella alpina. 



iEcidiuni Tragopogonis, Pers. Goatsbeard Cluster- 

 Cups; spots obliterated; peridia scattered, torn, wider above; 

 spores orange, at length black.— On stems, leaves, and involucres 

 of common Goatsbeard. Very common. May to June. Said to 

 be a state of Puccinia Tragopogonis. (Plate 1. figs. 1-3.) 



JEcidiurn Euphorbia?, Pers. Spurge Cluster- Cups; 

 spots obliterated, leaf thickened ; peridia scattered or crowded, 

 distinct; spores orange. — On the under surface of the leaves of 

 Spurge. Common. May to June. Said to be a condition of 

 Uromyces scutellata. 



Sect. II. Peridia in tufts or clusters. 



a. Elongate. 



iEcidium Berberidis, Pers. Berberry Cluster Cups; 

 spots roundish, bright red; subiculum thickened; peridia in 

 subrotund or oval patches, often elongated ; spores orange. — On 

 leaves, peduncles, and fruit of the common Berberry. Common. 

 May to July. Said to be a state of Puccinia graminis. (Plate I. 

 figs. 7-9.) 



iEcidium Thalictri, Grev. Meadow-Rue Cluster-Cups; 

 collected in roundish clusters; peridia oblong; spores bright 

 orange.— On Thalictrum alpinum. Not uncommon in Scotland. 



o 2 



