CRYPTOGAMIA— FILICES. Aspidium. 281 



F. ramosa dentala, ramulis ct pinnulis longius ab invicem distan- 



tibus. Mapp. Alsat. 106./. 8. 

 F, tenuissinie secta ex monte Ballon. Bauh. Hist. y.3. p. 2. 731./. 



In shady watery sandy places, or moist rocky woods. 



Perennial. Julrj, August. 



Root tuberous, scarcely creeping. Fronds various in size, gene- 

 rally about two feet high, erect, broad and spreading, bright 

 green, delicately and very copiously subdivided, being almost 

 triply ])innate, so deeply are all the leaflets pinnatifid, with ob- 

 long, obtuse, parallel, deeply serrated segments, their serratures 

 sharp, each tipped with a small bristly point. The main stalk 

 is slender, moderately scaly all the way up, but most so in its 

 leafless part ; the partial ribs are also scaly, or roughish. All 

 the subdivisions are partly opposite, partly alternate, the ulti- 

 mate ones slightly decurrent, their midribs straight, some of 

 them only a little zigzag. The secondary divisions, or leaves, 

 of the lower principal ones are much larger and longer than 

 their opposite neighbours. Masses very numerous, because the 

 frond is large and so much subdivided, but they are less crowd- 

 ed than in many ferns, though more so than in the last, they 

 are first tumid and kidney- shaped, the lobes directed towards 

 the base of each leaflet, or segment, but the cover when burst 

 becomes orbicular, with a deep fissure at the lower side. The 

 fructification is situated nearer the midrib than the margin of 

 each leaflet in the present species ; in the following the reverse 

 is observable. 



My learned friend Dr. F. Hamilton, late Buchanan, has sent from 

 Leney, near Stirling, along with my A. dilatation, a specimen 

 more precisely answering to Plukenet's t. 181./. 2, which he 

 suspects may be difl'erent. This latter is rather more pale and 

 delicate, but I cannot discern any specific distinction. 



] 1. A. diunetorwn. Thicket Shield-fern. 



Frond doubly pinnate ; leaflets pinnatifid ; lobes with ter- 

 minal, sharp, prickly teeth. Common stalk scaly. Cover 

 orbicular, flat, with a deep notch. 



Polypodium rhseticum. Huds. 458; according to the Banksian her- 

 barium. 



P. cristatum /3. Huds. ed. 1.390. 



Filix montana ramosa minor, argute denticulata. Raii Syn. 124. 



F. alpina, myrrhidis facie, Cambrobritannica. Pluk. Almag. 155. 

 Phjt. t.S9.fA; good. 



In bushy stony places, under shady rocks, or on mountains. 



On the summit of mount Glyder, overhanging the lake of Lhyn 

 Ogwan, North Wales. Mr. Lhivijd. Near Phainon Vellon. Dr. 



