9° 



FERN GROWING 



the frond bifid ; Caterina (Fig. 23), narrow, showing the in- 

 fluence of Frizcllce to reduce the width of the frond, branching in 

 the pecuHar manner of Hozvardcc, revolved 

 pinnules as in Harrisa, and brachiate, 

 depauperate, or nal-zed, the upper portion 

 most depauperated. 



EXPERBIENT NO. IX. 



In 1888 the spores from three varieties 

 of Scolopendrijtm vulgiwe were sown to- 

 gether, viz., crispuni-latnin (a handsome 

 crispum), m-nricattun (muricate), and kera- 

 toides (a branching form). (See Figs. 

 19, 20, 21.) Crispiim-latinu is mostly 

 sterile, and this was the only instance in 

 which the author was able to gather 

 spores, and these were only sparingly 

 scattered on a solitary frond. 



The seedlings became mature in 1S91, 

 and amongst them were three muricate 

 crisp7tins, one of which was branched at 

 the apex in the manner of kcratoides 

 (Fig. 24). The great interest attached to 

 this experiment consists in the fact that 

 these were the first muricate crispiims 

 that had ever been raised. Like crispum- 

 latuui, they have as yet been sterile. 

 Here again, how could a branched muri- 

 cate crispnm have been raised without a 



\g. ^^.—Athyrium Filix-famina multiple aCtlott of SpCmiS ? 



Cate>-!Na . M uch leduced. 



EXPERIMENT NO. X. 



In 1 888 spores of a crested Nephrodinni paleaceum {crista- 

 liiDi) were sown with a non-crested A^cphrodiuni abbreviatnm 



