192 MICROSCOPIC FUNGI. 



^ ^cidium Galii, Pers. Eedstraw Clustek-Cups ; spots 

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

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

 venim and G. mollugo. (Plate 11. figs. 15 — 17.) 



I am doubtful whether the \^cidium on Galium mollugo is 

 really this species. — (J/. C. C.) 



^cidium Bunii, DC. Pig-nut Cluster-Cups ; spots 

 obliterated, subiculum thickened ; peridia in irregular subrotund 

 or_ oval heaps; spores orange. — On Bunium bulbocastanum and 

 Fimpinella saxifraga. Spring. 



JScidiuni Valerianacearum, Dub. Yalepjan 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. 

 — On Valeriana officinalis and V, dioica. North Britain. 



.^cidiiim Asperifolii, Pers. ^ Borage Cluster-Cups ; 

 clusters subrotund, on a slightly thickened subiculum; peridia 

 scattered ; spores yellowish-white. — On leaves of various Bora- 

 ginece. Summer. The parts of the leaves on wliich it occurs are 

 rendered concave on one side and convex on the other. 



.Soidmni Grossiilari£e, DC. Gooseberry Cluster-Cups; 

 spots yellow, bright red on the opposite side, with a yellow bor- 

 der; peridia crowded in roundish heaps, at length brown, and 

 surrounded with a brown area; spores orange. — On leaves and 

 fruit of Gooseberry and Currant. Common. May to June. 



.fficidmm. Urtic^, DC. Nettle Cluster-Cups ; spots 

 obliterated, subiculum thickened; peridia disposed in elongated 

 -or subrotund heaps, at first subglobose, then gaping; spores 

 orange. — On leaves and stems of Nettles, distorting them very 

 much. Common. June. (Plate I. figs. 10, 11.) 



.^cidiuni Behenis, DC. Bladder-Campion Cluster- 

 Cups ; spots yellow, brown on opposite side ; peridia somewhat 

 circinating, in subrotund heaps ; spores brown. — On Silene inflata. 

 Not common. Some of the peridia are short and open, others 

 larger and closed. 



.^cidiuni Orobi, DC. Bitter- Yetch Cluster-Cups ; 

 spots yellow, effused ; peridia scattered and disposed in small 

 heaps ; spores at length white.—On stems and leaves of Orobiis 

 tuherosus. Scotland. 



y, SuhimmerscB, 



^cidium Compositarnin, Mart. Composite Cluster- 

 Cups ; spots purplish, subrotund, confluent above ; peridia 

 crowded, in orbicular patches, or circinating, on the under surface ; 

 spores orange, oval. 



