32 ASPLENIUM. 



above; and bound by a slight, raised, 

 bleached, border all round the frond. Sori 

 numerous, either in single oblique lines 

 between the midrib and edge of both the 

 centre and the projected sides, indusia 

 attached sometimes outwardly and some- 

 times inwardly ; or in double, indusium 

 attached inwardly, and opening back to 

 back. It can hardly, therefore, be ranked 

 as a true Asplenium, and yet still less as a 

 Scolopendrium, though assigned to the 

 former genus. Not yet recognised by any 

 authority as a native. July. Deciduous. 

 Found in Essex. Lancashire. Ireland. 

 Common in Portugal and Madeira, &c. 

 RUTA MURARIA. (WdllRue.} Fig. 30. 



From 1 to 5 inches. Growing in tufts, 

 and embedded in the crevices and joints of 

 walls. A slender stalk sending out, from 

 about half-way up, little alternate pinnae 

 (occasionally running into secondary ones 

 also), having pinnules very variable in 

 form, sometimes long-stalked, toothed, 

 and simply wedge-shaped, or contracting 

 also to a roundish point above ; or almost 

 diamond ; or cut off abruptly, as it were, 

 at the top, and yet toothed there ; or the 

 pinnse themselves simple, round, broad, 

 oval, or scalloped, and either smooth or 

 jagged on their edges. Sori ultimately 



