830 BULLETIN UNITED STATES GEOLOGICAL SURVEY. 



*675. Uquisetum hyemale, L. 

 *076. Equisetmn Iwvigatum, Braun. 

 *C77. Uquisetum Umosum, L. 

 678. Uquisetum robustum, Braun. 



1874. June. Missouri Eiver. 



FILIOES. 



*679. Folypodium vulgare, L. 

 *080. PJiegopteris DryapteriSj Fee. 

 *681. Aspidium Lonchitis, Swz. 

 *6S2. Aspidium spinulosum, Willd. 

 *GS3. Onoclea sensibilis, L. 

 *684. Cystopteris hulbifera, Bernh. 

 *685. Cystopteris fragilis, Bernh. 

 *686. Woodsia IlDensis, R. Br. 

 *687. Boirychium lunarioides, Swz. 

 *088. Botrychimn Virginicum, Swz. 



LYOOPODIACE^. 



*689. Lycopodium complanatum, L. 

 *690. Lycopodium luoidulum, Mx. 

 091. Selaginella rupestris, Spreng. 



1874. August. Base of Rocky Mountains, and almost any- 

 where eastward, in some places covering the face of the 

 country and forming much of the sod on sterile hills. 



LICHENES. 



692. Evernia alpina. 



1874. August. Rocky Mountains. 



