114 



LICHENOLOGICAL MEMORABILIA. 



mountain- ash and willows ; L, carneola, Ach., very fine on oak and 

 beech; L. resince, Fr. ; L. tnelcena, Nyl., on fir; L. spododes [T) 

 Nyl., on fir; L. pidverea, Borr. (rare). L.nigritida, Nyl., on fir. 

 Pertusaria communis, P. fallax, P. leioplaca, and P. ceuthocarpa, 

 on beech and sycamore, the latter rare. Lecanora expallens, Ach., 

 and Lecanora paveUa^f. tumidida, (Pers.), very fine and abundant 

 on old sycamores. Stictina syhatica^ S. fuliginosa, and S. scrohi- 

 culata, N ephromivm Lusitanicum, Sch^r. Ramalina calicaris,YB.. 

 and what I incline to regard as a new species of MelaspUea with 

 uniseptate vermiform spores, very sparingly on oak, and which 

 I name M. venniformis, and also a very singular-looking plant 

 growing on the fir-tree resin in company with L. resince, consisting 

 of scattered globular or verruciform pale olive-green apothecia, de- 

 pressed at the apex, and containing lineari-oblong 3-septate 

 colourless spores, arranged in double series in the asci. It is 

 doubtful whether this should be classed with lichens or fungi — if 

 to the former I would name it Lecidea chloi'ocarpa, Leight. 



From the rocks in the woods I obtained Opegrapha saxigena, 

 Tayl., excessively fine, well developed, and abundant. Verrucaria 

 nigrescens, (Pers.). V. chlorotica,}. codonoidea,'L'EiGnT. V.horis- 

 tica, Leight., very fine. V. lectissima, (Fr ). V. gemmifera, Tayl. 

 V. rupestris, Schrad. V. mesotropa, Nyl. Lecidea dealbatula, 

 Nyl, very fine and abundant in one locality. L. Oederi, Ach. L. 

 pelidna, A.CH. L. lactea (Flk.). L. fusco-atra, f. griseUa, Flk. 

 L, suhkochiana, Nyl. L. concreta 1 Wahl. L. panceola, Ach. 

 Lecanora argoplwlis, Wahl. 



On the rocks about the beautiful Trefrlw waterfall occurred 

 Verrucaria margacea, Whnb. V. hicens, Tayl., fine and abundant 

 with 3, 5, and 7-septate spores. V.pi/renophora, Ach, with simple 

 1-and 3-septate spores. V. umbrina, Whnb. V. peripherica, 

 (Tayl.). V. erratica, (Mass.). Lecidea excentrica, Ach. L. 

 leiotea, Nyl., L. coarctata, f. elacista, and involuta ; L. leucocUnella ; 

 L. 2)rotrusa, Fr., L. rivulosa, Ach., L. citrinella, Ach., L. lenticu- 

 laris, Ach., L. chalyheia, Borr., Stereocaulon paschale, (Ach.), 

 and Lecanora lacustris, (With.). 



On the rocks and stone walls around the romantic Lake Llyn 

 Geirionydd, the burial place of the Welsh poet Taliessin, about 

 three miles S.W. from Trefriw, I collected Verrucaria lectissima, 

 (Fr.), Lecidea ParmeUarum, Smrf., very fine and abundant on 

 Parmelia omp)halodes, which was also in fine fruit, L. lactea (Flk.). 

 L. suhkochiana, Nyl., L. silacea, Ach., L. lithophila, Ach. L. 

 aglcea, (Smrf.). L. fuliginosa, Tayl., very fine and abundant. 

 Op)egrapha saxicola, Kq^., f. gyrocarpa, (ZW.), Lecanora intricata, 

 (Schrad.), Parmelia jihysodes, f, platyphylla, Ach. Squamaria 

 saxicola, (Poll.), and versicolor, (Pers.), Lecanora badia, Ach. 

 Physcia lychnea, Ach. Lecanora fnscata, (Schrad.). Parmelia 

 conspersa, f, isidiata, Anzi. Lecanora polytropa, 'f. conglobata, 

 (Smrf.). 



