APPENDIX. 191 



^cidium Soldanellse, Hornscli. Soldanella Clusteu- 

 Cups ; Spots obliterated ; peridia solitary, scattered over the 

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

 leaves of Soldanella alpina. 



JScidium Tragopogonis, Pers. Goatsbeaud Clustee- 

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

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

 of common Goatsbeard. Yery common. May to June. (Plate I. 

 figs. 1—3.) 



^eidium Euphorbise, Pers. Spuege Cltjstee-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. Peridia in tufts or clusters. 



a. MongatcB. 



.^eidium 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.) 



.fflcidium Thalictri, Grev. Meadotv-Uue Cluster-Cups ; 

 collected in roundish clusters ; peridia oblong ; spores bright 

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



.fficidium 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 ccitharticus and R.frangula. Common. 



.fficidium Periclymeni, DC. Honeysuckle Cluster- 

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

 peridia sometimes elongated, in roundish or efi'used heaps ; spores 

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

 mon. June to August. 



'■o^ 



/3. Toculiformae. 



-Slcidium Calthse, Grev. !Marsh-Marigolp 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. 



JEcidium Ranunculaceanun, DC. Crowfoot Cluster- 

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

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

 of various Ranunculaceae ; very common on jK. Ficaria, not un- 

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

 Spring. (Plate II. figs. 12—14.) 



