FILICES. 



1041 



or wedge-shaped and deeply toothed 

 segments. Fruiting fronds f to 1 foot 

 high, with equally numerous oblong or 

 linear segments, the thin membranous 

 edges turned down over the sori. 



In the mountains of Europe, from 

 the Pyrenees and Apennines to the 

 Arctic regions, usually local, but often 

 very abundant in particular spots. In 

 Britain, chiefly in Scotland and north- 

 ern England, but occurs also in cen- 

 tral and western England and in Ire- 

 land. Fr. summer. 



Fig. 1265. 



VI. GYNNOGRAM. GYMNOGRAMMA. 



Fronds much divided. Sori linear or oblong, simple or forked, not 

 marginal, and without any indusium. 



A considerable genus, chiefly tropical, including many of those ele- 

 gant Ferns often seen in our hothouses, with a golden or silvery dust 

 on the under side of the fronds. 



1. Small Gymnogram. 



Gymnogramma leptophylla, Desv. 

 (Fig. 1266.) 



A delicate little Fern, resembling at 

 first sight very small specimens of the 

 curled Allosorus. Fronds in little tufts, 

 although the whole plant is usually 

 annual ; the outer fronds short, with few 

 broadly obovate or fan-shaped segments, 

 often barren ; the others erect, 2 to 6 

 inches high, with slender black stalks, 

 twice pinnate, with numerous small, 

 thin, obovate, deeply toothed or lobed 

 segments. Sori oblong, at length nearly 

 covering the under surface of the seg- 

 ments. 



On moist shady banks, in the Medi- 

 terranean region and western Europe, 

 extending eastward into central India, 



VOL. II. 



Fig. 1266. 



2 T 



