ASPLENIUM. 31 



cover the whole pinnule. May. Evergreen. 

 Not common. Chiefly on rocks by the 

 sea-side in South and West. Difficult of 

 cultivation, requiring a sheltered, moist, 

 but not damp, warm, position and atmo- 

 sphere. Ornamental. 



MARINUM. (Sea Spleenwort.} Fig. 12. 



Usually from 6 to 12 inches, though occa- 

 sionally taller. Growing in masses. A 

 stem bearing on either side, from about 

 one-third upwards, simple, short-stalked, 

 leathery, shining, darkish green, somewhat 

 oblong-egg-shaped, undivided, mostly alter- 

 nate, pinnee, having a kind of elbow above 

 next the stem, and notched throughout 

 except at the base, about an inch long in 

 the middle of the frond. Son never 

 uniting. June. Evergreen. Not uncom- 

 mon on the sea-coast. Removed with 

 difficulty and hazard, from the adherency 

 of its roots to the rocks. Requires a glass, 

 but then succeeds fairly. 



PALMATUM. (Mule Fern.} Fig. 40. 



From 6 to 12 inches. A simple, undivided, 

 shoot or frond, of the appearance and tex- 

 ture of the Scolopendrium, only thinner 

 in substance, heart-shaped below, but the 

 indentations higher, with lateral projec- 

 tions on the lower half of each side, either 

 rounded or triangular; oblong-triangular 



