SPECIAL WAYS OF GROWING FERNS. 119 



Adiantum affine, Willd. (small). 



A. caudatum, Linn. (12 inches high, rooting tips). 



A. colpodes, Moore (14 inches high, graceful). 



A. cincinnum, H. B. K. (15 inches high, drooping;. 



AspleniMmflabellifolium, Cav. (prostrate, rooting tips). 



Camptosorus rhizophylluSj Link (PI. 14). 



Davallia membranulosa. Wall, (rhizome of a reddish 



color). 



D. tenuifelia, Swartz (15 inches high, delicate). 

 D.,pallida, Mett. (a beautiful species). 

 D. platyphylla, Don (a graceful plant). 

 D. bullata, Wall. (8 inches high, one of the best). 

 Gleichenia dicarpa, Br. (12 inches high, delicate). 

 G. dichotoma, Willd. (large and strong). 

 Polypodium diversifolium, Swartz (curious). 

 P. lingua, Swartz (stiff, but interesting). 

 P. fiercussum, Cav. (fine when in fruit). 

 P. mustzfolium, Blume (very large and fine). 

 Pteris scaberula, Rich, (very delicate). 

 The Selaginellas also are always useful in this department 



of fern-culture. 



Stumps may be utilized for growing such plants 

 as are denominated Epiphytic* and which require 

 but little soil. The Stag's-Horn Ferns (Platyce- 

 rium) are well adapted for this mode of culture. 

 The plant of P. alcicorne shown in the frontispiece 

 has been growing in the same position, without 

 change or renewal of earth, for six years. The old 

 sterile fronds remain at the base of the plant, and, 

 decaying, furnish a sufficient supply of material for 

 the tern to continue its growth. P. grande is un- 



