266 LICHENES. 



25. CoLLEMA NiGRESCENS. B. Langtott woods, Rev. Thos. 

 Brown. 



26. C. CRiSTATUM. B. Ou walls intermixed with mosses, in 

 the neighbourhood of Berwick. Sea-banks at St. Helen's Chapel, 

 and to the east from Redheugh, J. Hardy. 



27. C. NIGRUM. B. On walls with the preceding. "This 

 Lichen forms ink-like stains upon the rocks on which it grows." 

 Hooker. 



28. C. LACERUM. B. In Red-clues cleugh ; Kitchen cleugh ; 

 Blackburn-rigg dean : with apothecia in Reedy-burn, J. Hardy. 



29. EvERNiA PRUNASTRi. On ti'ecs and hedges, very common. 

 — With apothecia on birch-trees in Penmanshiel wood ; and on the 

 stems of heather on Penmanshiel moor, J. Hardy. 



30. BoRRERA FxiRFURACEA. On old trecs and stone walls in 

 our moor districts, but not common. 



31. B. ciLiARis. Trunks of trees, and on rocks in moors, not 

 uncommon. 



32. B. TENELLA. Very common on trees, shrubs, and stone- 

 walls. 



33. Cetraria islandica. Iceland Moss. On the Lammer- 

 muirs, not unfrequent. 



34. C. GLAUCA. On stones in moors, and on heather. 



35. Ramalina fraxinea. On ash-trees, frequent. 



36. R. FASTiGiATA. On trees, common. 



37. R. FARiNACEA. On trecs, walls, and rocks. Mr. Hardy 

 finds it with apothecia, ou oak-trees, in Penmanshiel wood. They 

 are of very rare occurrence. 



38. R. scopuLORUM. Ou rocks by the sea. — -The variety 

 cornuta (Lichen siliquosus, Huds.) grows abundantly on Hudshead. 



39. UsNEA PLicATA. On old trccs, particularly on firs, common. 

 This, with the following and Evernia prunastri, constitute the " idle 

 moss" of Shakespeare. Poets often in their "moss" include the 

 Lichens as a class. Thus Southey in his Lyric on the 1st of 

 December : — 



" Not undelightful now to roam 

 The wild heath sparkling on the sight ; 

 Not undelightful now to pace 

 The forest's ample rounds ; 



" And see the spangled branches shine ; 

 And mark the moss of many a hue 

 That varies the old tree's brown bark. 



Or o'er the grey stone spreads." — Works, p. 120. 



40. Alectoria jubata. On trunks of old trees in muirland 

 deans, and on rocks in moors, not uncommon. On the oaks of Kyles 



