12 THE JUL'JJXAL OF BOTANY 



Lichens', and species not recorded for Carnarvonshire in Grriffitli's 

 Flora are indicated by an asterisk : — 



SphcBrophorns glohosus A. L. Sm. Frequent on boulders. — 

 S.fragilis Pers. On Clogwjn and CVm Grias, frequent. 



Epiiebe lanata Wain. Damp shad}^ rocks neai- Llanberis Castle. 



*Foli/chidium muscicolam S. F. Gray. Moss}' boulder on 

 Snowdon. 



Faiuiaria pezizoides Light. Near the stream by Crib Coch. 



Feltigera canina Willd. Llanberis; Cwm Glas and Snowdon. — ■ 

 *P. polydactyla Hoffni. Banks in Llanberis Pass and below Clog- 

 wyn. — P. aphthosa Willd. Shaded banks in Llanberis Pass. 



Solorlua saccata Ach. Damp ledges on volcanic ash. Cwm 

 Glas. 



Parmelia physodes Ach. Common, with forms lahrosa and 

 recurva. — P. puhescens Wain. Snowdon at about 2550 ft. ; sparingly 

 near Clogwyn Tarn. — P. perlata Ach. Frequent near Llanberis. — 

 P. caperata Ach. Very fine on both trees and rocks. — P. prohos- 

 cldea Tayl. Sparingly on trees near Llanberis Castle. — P. saxaiilis 

 Ach. and iornvA, fu7]fiiracea Schser. General, on trees and rocks. — 

 P. cetrarioides Del. Kocks at foot of Snowdon, above Llanberis 

 Falls. — P. sulcata Tayl. Noted only once on a wall near Nant 

 Perris. — P. Icevigata Ach. Eather frequent on boulders and trees 

 near Llanberis. — P. revoliota Floerke. On mossy boulders near 

 Llanberis Falls. — P. conspersa Ach. Common and fruiting well 

 about Llanberis ; var. stenophi/lla Ach. near the Castle, f. isidiata 

 Leight. On boulders ^t the foot of Snowdon. — -P. omplialodes 

 Ach. Very frequent throughout the district, and occasionally fruit- 

 ing well. — F.fuliginosa Nyl. Common on rocks and walls. The 

 var. IcBte-virens Nyl. frequent on trees. 



Getraria glauca Ach. Common on both rocks and tree-trunks. 

 — G. islandlca Ach. Sparingly in Cwm Glas, and on Snowdon 

 at 3250 ft., var. tenuifolia Wain. Amongst Racoinitriuni laiiugl- 

 nosum at about 3500 ft. on Snowdon. — C. aculeata Fr. Common, 

 ascending to the summit of Snowdon. 



Everiiia prunastri Ach. Tree-trunks at Llanberis. — E. furfu- 

 racea Mann. On a wall at the foot of Cwm Glas. 



*Usnea liirta Ach. Trees near Llanberis. — Z7. ceratina Ach. 

 On rocks in Llanberis Pass. 



Alectoria hicolor Nyl. Near the summit of Snowdon and 

 in Cwm Glas. — *A. chalyheiforniis Th. Fr. Snowdon at above 

 3000 ft. 



^Geraiiia vermicularis S. F. Gray. On the bare shoulders of 

 Snowdon immediately below the Summit Station, in some abundance, 

 and ranging between 3200 to 3500 ft. or higher. It occurs on 

 ground covered with small stones, associated with SaUx herhacea, 

 Bacomitrmm lanuginosum, Anthelia Juratshaim., Marsupella ustu- 

 lata, Gladonia uncialis var. turgescens^ Lecidea demissa and other 

 alpine species. 



Xantlwria parietina Th. Fr. Occasionally on walls, gate-posts, 

 and rocks, especially near villages and farms. 



