GROUP V 



FERTILE AND STERILE FRONDS LEAF-LIKE AND SIMILAR ; 

 SPORANGIA IN LINEAR OR OBLONG FRUIT - DOTS 



and have secured a hold that enables you to stand 

 up and examine at leisure the suspicious patches, 

 your heart bounds with delight as you get a 

 near view of the fringe of blue-green, leathery 

 fronds which flatten themselves against the gray 



Mountain Spleenwort 



cliffs. Apparently 

 on}y the plants that 

 grow under specially 

 favorable conditions 

 are able to develop fronds that attain a length 

 of five or six inches. Only in what must have 

 been almost constant shadow, under the shelving 

 rocks, directly above the lake and refreshed 

 always by its moisture, did I find these really 



13* 



