APPENDIX. 191 



^cidium Soldanelte, Hornscli. Soldanella CLrsTEu- 

 Cups; spots obliterated; peridia solitary, scattered over the 

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

 leaves of Soldanella alpina. 



-S^eidium Tragopogonis, Pers. Goatsbeaed 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. (Plate I. 

 figs. 1—3.) 



JEeidium Euphorbise, 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. 



Sect. II. Teridia in Uifts or clusters. 



a, miongatdB, 



-^cidium 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. (Plate I. figs. 7—9.) 



^cidium Thalictri, Grev. Meadow-Kue Cluster-Cups ; 

 collected in roundish clusters ; peridia oblong ; spores bright 

 orange. — On Thalictrum alpinur/i. Not uncommon in Scotland. 



-ffieidium crassunij Pers. Buckthorn Cluster-Cups; 

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

 roundish heap, at first globose, yellov/, at length open ; spores 

 orange . — On Uhammis cat hart Icus and R. frangula. Com m on . 



-JEeidium Periclymeni, DC. Honeysuckle Cluster- 

 Cups; 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 com- 

 mon. June to August. 



/3. FoculiformcB. 



iEcidium CalthsD, Grev. Marsh-Marigold Cluster- 

 Cups ; aggregate ; peridia somewhat campanulate, with numerous 

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

 — On leaves and petioles of Caltha palustris. Margin of peridia 

 pale and brittle. Bare. Spring. 



-ffilcidium E-anuneulacearuni, DC. Crowfoot Cluster- 

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

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

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

 common on R. repens, more rarely on R. acris and R. hulhosus. 

 Spring. (Plate 11. figs. 12-li.) 



