CATALOGUE. 351 



Parmelia conspersa, (Ehrh.) Ack, var. molliuscula, Tuckerm. — 

 Earth, South Park, Colorado. 



Umbilicaria vellea, (L.) Nyl., probably, but all the specimens are 

 infertile. — On rocks, Twin Lakes, Colorado. 



Peltigera venosa, (L.) Hoffm. — On earth, Twin Lakes. 



Peltigera aphthosa, (L.) Hoffm. — Earth, Twin Lakes. 



Peltigera horizontals, (L.) Hoffm. — Earth, Twin Lakes. 



Peltigera canina, (L.) Hoffm. — Earth, Twin Lakes. 



Solorina saccata, (L.) Ach, var. spongiosa, Nyl. (S. bispora.) — Trout 

 Creek and South Park, on the earth. 



Pannaria Hypnorum, (Hoff.) Koerb. — Earth, Twin Lakes, Colorado. 



Pannaria brunnea, (Sw.) Mass. — Earth, Twin Lakes. 



Leptogium Tremelloides, (L. fil.) Fr. — On rocks, Twin Lakes. 



Placodium vitellinum, (Ehrh.) Naeg. & Hepp. — On the earth, Colo- 

 rado. 



Placodium sinapispermum, (DC.) Hepp. — Earth, Twin Lakes. 



Placodium Jdngermanni^e, (Vahl, Th. Fr.). — Earth, Twin Lakes. 



Lecanora rubina, (Vill.) Schser. — Rocks, Twin Lakes, Colorado, and 

 Arizona. 



Lecanora castanea, (Hepp.). — Earth, Twin Lakes. 



Rinodina turfacea, (Wahl ) Koerb. — Earth, Twin Lakes. 



Cladonia fimbriata, (L.) Fr. — Earth, Twin Lakes. 



Cladonia cariosa, (Ach.) Floerk. — Earth, Twin Lakes. 



Cladonia gracilis, (L.) Fr., var. hybrida, Schser. — Earth, North 

 Branch of South Platte. 



Biatoria crenata, (Tayl.) Tuckerm. — Earth, mountains of Arizona. 



Boellia papillata, (Sommer f.) Tuckerm. — Earth, Twin Lakes, 

 Colorado. 



