COLOURED ILLUSTRATIONS 



E 



I. Old Man's Beard, Usnea barbaia, (L.) Fr Frontispiece 



FACING PAGE 



1 1 . Yellow Wall-lichen, Tbelocbistes parietinus, (L.) Norm. 4 



III. Hypnum uncinatum Hedw 24 



Golden Cord Moss 24 



Georgia pellucida, Rabenh 24 



Neckera pennata, Hedw. 24 



Sphagnum cymbifolium, Ehrh 24 



IV. Ceratodon purpureum, Brid 42 



Catbarinea angustata, Brid. . . . . . .42 



Climacium dendroides, Web. & Mohr .... 42 



Pogonatum brevicaule, Beauv 42 



V. Parmelia conspersa, (Ehrh.) Ach. . . . . 58 



VI. A Forest Boulder . 70 



[VII. Iceland Moss, Cetr aria Islandica, (L.) Ach. . . no 



Sticta pulmonaria, Ach no 



Sticta amplissima, (Scop.) Mass no 



The Dog Peltigera, Peltigera canina, (L.) Hoffm. . no 



VIII. Reindeer Lichen and variety . . . . .130 



Reindeer Lichen, variety Alpestris . . . .130 



Reindeer Lichen, Cladonia rangiferina, (L.) Hoffm. . 130 



Pbyscia leucomela, (L.) Michx 130 



IX. Wood Path 152 



X. Hairy-cap Moss, Polytrichum commune, L. . . .162 



XI. Umbilicaria vellea, (L.) Nyl. 174 



Rock Tripe, Umbilicaria Mublenbergii, (Ach.) 



Tuckerm 174 



XII. Scarlet-crested Cladonia, Cladonia cristatella, Tuckerm. 1 84 

 Brown-fruited Cup Cladonia, Cladonia pyxidata, 



(L.)Fr. 184 



XIII. A Thalloid Hepatic, Marcbantia polymorpba, L. . 204 



