FILICES. 



1053 



9. Alternate Spleenwort. Asplenium germanicum, Weis. 



(Eig. 1283.) 



(A. alter nifolium, Eng. Bot. t. 2258.) 



Very near the Wallrue 8. 9 and per- 

 haps a mere variety ; but the segments 

 are much narrower, usually narrow 

 wedge-shaped or oblong, on short stalks ; 

 the whole frond narrow, usually simply 

 pinnate, with the lower segments 3- 

 lobed, or very rarely bearing 3 distinct 

 segments ; the segments entire or toothed 

 at the summit. Sori few, long and 

 narrow. 



On rocks and old walls, dispersed over 

 the greater part of Europe, from Spain 

 to Scandinavia. Has been found in iso- 

 lated localities in western and northern 

 England, and southern Scotland. Fr. 

 summer and autumn. 



Fig. 1283. 



10. Forked Spleenwort. Asplenium septentrionale, 

 (Eig. 1284.) 

 (Eng. Bot. t. 1017.) 



This again is allied to the Wallrue S., 

 and has similar tufted fronds, 2 to 5 or 6 

 inches high ; but the whole frond usually 

 consists of a stalk, forked towards the 

 top, each branch bearing a single, linear, 

 entire or 2-lobed segment, about half an 

 inch long, the linear sori occupying the 

 whole under surface except the narrow 

 pointed extremity, Some fronds have 

 but a single entire or 3-lobed terminal 

 segment, and a few have 3 distinct seg- 

 ments. 



On rocks and old walls, in the moun- 

 tainous districts of the greater part of 

 Europe and central and Russian Asia, 

 from Spain to Scandinavia, and in the 

 mountains of North America. In Britain, Fig. 1284. 



Hoffm. 



