14 THE JOURZ^AL OF BOTANY 



Stereocaidon condensatuin Hoffm. With Cerania vermicidaris 

 at 2250 ft. on Snowclon. — S. coralloides Fr. Snowdon. — *S. evo- 

 lutum Graewe. Frequent on walls and rocks. — 8. denudatum Floerke. 

 Cwm Glas and Clogwyn, rather frequent. *\2iY. pulvmatum Th. Fr. 

 Rocks above 3000 ft. on Snowdon. and on boulders near Nant 

 Perris. 



Cladonia sylvatica Hoffm. Very frequent. — C. uncialis Web. 

 Frequent. The var. turgescens Fr. and *f. obtiisata Ach. high up on 

 Snowdon, rare. — G. i:)yxidata Hoffm. Banks and walls near Llan- 

 beris. Var. chlorophwa Floerk. and *f. lepidophora Floerk. on walls 

 in Llanberis Pass. — O. Jimbriata Fr. form macra Floerk. With the 

 preceding, and also *var. suhcormita Nyl. f. anfilopcBa (Mudd). — 

 *C. lepidota Nyl. f. liypopliylla Cromb. Cwm Glas, Clogwyn, and 

 on Snowdon near the railway at 3500 ft. — -C. cervicornis Schaer. 

 Common on rocks and boulders. — C. soholifera N\d. Cwm Glas. I 

 do not understand the limitations of this and the preceding. The 

 plant we have always called C. cervicornis invariably gives a very 

 distinct yellow reaction with KHO, and I have referred all those 

 without such reaction to C. soholifera. — C. gracilis Willd. Frequent 

 on walls and mossy rocks. — C.furcata Schrad. Cwm Glas. — C. digi- 

 tata Hoffm. Near Llanberis Castle. — *C. sg^uamosa Hoffm. Mossy 

 wood in Llanberis Pass. — C. coccifera Willd. Clogwyn and Cwm 

 Glas. — *C. flahelliformis Wain. Mossy boulders above Llanberis 

 Falls. — *C. macilenta Hoffm. Wood near Llyn Padarn. 



Lecidea demissa Th. Fr. Snowdon at 8250 ft. — L. lucida Ach. 

 Walls between Llanberis and Nant Perris. — L. coarctata Nyl. var. 

 <?Z«cw;^« Cromb. Slaty rocks below Clogwyn. N-ay. glehulosa Cromb. 

 Llanberis Pass and amongst decaying hepatics &c. near the summit 

 of Snowdon. — *Z. yr«w?«!;/o6'« Schaer. and *L. uliginosa Ach. Cwm 

 Glas. — L. parasema Ach. Trees near Llanberis. — *L. goniophila 

 Schaer. Rocks below Clogwyn and on Snowdon at 3300 ft. — 

 *L. leucophcsa Nyl. Snowdon above 2000 ft. — L. conseiitiens 

 Nyl. Snowdon at about 3000 ft. — L. coutigua Fr. Abundant on 

 rocks, walls, and small stones, with the v2iY. jlavicunda Nyl. A form 

 with minute apothecia occurs. — L. sored iza Nyl. Rare. Rocks 

 below Clogwyn. — L. conjluens Ach. Common, with f. oxydata 

 Leight. The var. rimoso-areolafa Leighton on Snowdon. — L. lapi- 

 ci da Ach.. Boulder in Llanberis Pass; Snowdon. — L. lithopliila Ach. 

 Snowdon at 3250 ft., f. ocliracea Floerk., on rocks below Clogwyn. — 

 *L. plana N}^. Cwm Glas and Clogwyn. — L. lactea Floerke. Rocks 

 near the Snowdon railway at about 3300 ft. — JL. aglcea Sommerf. 

 Rocks below Clogwyn. — L. rividosa Ach. Frequent, and often 

 associated with Lecanora hadia and the next species. — L. Kochiana 

 Hepp. Ascends to above 3250 ft. on Snowdon. The var. lygcea 

 Leight. occurs on rocks below Clogwyn. 



Megalospora sanguinaria Massal. Boulders in the wood near 

 Llanberis Castle. 



Biatorina lenticularis Koerb. var. acrustacea Hepp. Rocks on 

 Snowdon at about 2300 ft. — B. confristans A. L. Sm. On decaying 

 Andrecea near the summit of Snowdon. 



