
D. hepaticum (Ach.) Th. Fr. Rocky Mountains; Dr. 
Hayden. N. Mexico; Mr. Fendler. 
Enpocarron pusillum, Hedw., Th. Fr. (£. pallidum, 
Ach., Nyl.) N. Mexico; Mr. Wright. 
Collemaceous Lichens are but ill represented in the 
collections. The following are all that have been de- 
termined. 
CoLteMA coccophorum, Tuck. N. Mexico; Mr. Wright. 
©. cristatellam (sp. nova) thallo subeffuso olivaceo-nigro ¢ 
lobulis minutis confertis crassis erectiusculis complicatis 
margine granulatis ; apotheciis mediocribus plano-con- 
wexis, disco caslaneo margine tenui granulato-crenato. 
Spore oblongo-ovoider, e tetrablasto trregulariter pleio- 
Waste, diam. 3-4 plo longiores, incolores. On the 
earth, in gravelly soils, Santa Fe, New Mexico; Mr. 
Fendler. Comparable with, but I think a distinct 
plant from the European C. cristatum, Scher. 
C. Texanum, Tack. Valley of Rio Grande ; Mr. Wright. 
©. flaccidum, Ach. New Mexico; Mr. Fendler. 
C. nigrescens (L.) Ach. Coast; Mr. Bolander. 
Leptocium tremelloides (Ach.) Fr. N. Mexico; Mr. 
Fendler. 
LZ. palmatum (Huds.) Mont. Coast; Menzies. Mr, 
Bolander. 
LZ. saturninum (Ach.) Nyl. Rocky Mountains; Hook. 
hb. N. Mexico; Mr. Fendler. 
Z. muscicola (Sw.) Fr. Coast; Mr. Bolander. 

APPENDIX. 
The Lichens, of which characters are here subjoined 
have not yet occurred in the regions embraced in the 
above list. 
