CLXI. LICHENES. 687 



Usnea — contd. 



cornuta, Flot. 

 hirta, Fr. 

 ceratina, Ach. 

 sublurida, Stirton. 



Tribe IX. — Ramalinei. 

 Ramalina, Ach. 



farinacea, Nyl. 



var. nervulosa, Muell. Arg. (Fig. 703.) 



var. squarrosa, Muell. Arg. 

 minuscula, var. alba, C. Knight. 

 fraxinea, Ach. 



var. taeniaeformis, Ach. 

 geniculata, Tayl. 

 gracilis, Nyl. 

 pusilla, Le Prev. 

 intermedia, Del. 

 inflata, Hook, et Tayl. 



var. gracilis, Nyl. 



var. olivacea, Muell. Arg. 

 yemensis, Ach. 

 scopulorum, Ach. 

 calicaris, Fries. 

 exiguella, Stirton. 

 perpusilla, Stirton. 

 complanata, Ach. 

 rutilans, Stirton. 

 Eckloni, var. tenuissima, Mey. ct Flot. 



var. membranacea (Mnt.j, Laur. 



var. ovalis, Tayl. 

 dendriscoides, Nyl. 



var. minor, Muell. Arg. 

 leiodea, Nyl. (Fig. 704.) 



Tribe X. — Cetrariei. 

 Platysma, Hoffm. 

 glaucum, Fries. 



eriophyllum, C. Knight — Erioderma Knightii, Shirley. 

 (Fig. 705.) 



Series D. — Phyllodei. 



Tribe XI. — Peltigerei. 



Nephromium, Ach. 

 lsevigatum, Ach. 

 tropicum, Muell. Arg. 



