CKYPTOGAMIA—FILICES. Asplenium. 305 



and separating at the opposite margin, towards the next 

 midrib, or vein, of the leaf, leaflet, or lobe, not towards 

 the outer edge of the same. Cajys. numerous, stalked, 

 globose; each of 1 cell, and 2 equal, hemispherical 

 valves, bound together by a transverse, jointed r/;/o-, 

 which when dry separates them by its elasticity. Seech 

 numerous, roundish, very minute. 

 Herbaceous. Root either tufted or creeping, blackish, with 

 strong fibres; sometimes scaly. Fronds erect, mostly 

 stalked, either simple, or variously pinnate, or branched ; 

 notched or serrated, rarely entire ; generally of a firm 

 texture, and smooth, not scaly. Cajys. brown, or tawny. 

 Cover pale, permanently straight, always having a rib 

 or vein between the ed^e, at which it separates from the 

 frond, and the outer margin of its lobe or leaflet, whether 

 tlie oudine of such be complete or not. By this mark 

 Aspleimim is always to be distinguished, with due atten- 

 tion, from Darea, of which there is no British species. 



1. A. Trichomanes. Common Maidenhair Spleen- 

 wort. 



Frond linear, pinnate; leaflets roundish-ovate, crenate. 

 Midrib coloured, polished; keeled underneath. 



A. Trichomanes. Lwn.Sp.Pl.\:)40. IfVld.v. 5. 33\. FLBrA\26. 



Engl. Bot. V.8. t.blC). Hook, Loud, t. 15G. Scot. p. 2. 155 



fVoodv. t. 204. Bolt. Fil. 22. t, 13. Ft. Dan. t.Wd. Bull. Fr. 



t.lSj. Dicks. H. Sice. fasc A. \7. Ehrh.Pl.Of.\70. Cnjpt. 22\. 

 A. n. 1693. Hall. Hist. V. 3.0. 

 Trichomanes. naiiSyn.WO. Fuchs. Hist. 796. f. Ic.iGO.f. Matth. 



Valgr. V. 2. 543./. Camer. Epit. 925 . f. Cord. Hist. J 70. /. I . 



Trag. Hist. 530./. Tillands. Ic. 77. jV 

 T. mas. Ger. Lm. 1140./. 

 T. seu Polytrichum officinarum. Baiili. Pin.3C)G. Moris, r. 3 591 



sect. 14. t. 3. f. 10. Plum. Fd. prof. 26. t. B./. 1. Sibh.' Scot' 



scct.2. 52. t. 3. f.3. 



/3. T. foliis elegantcr incisis. Dill, in liaii Sijn. 120. Tourn. Inst 



539. /. 315./. C. 

 Adiantum maritimum, segmentis rotundioribus. Pluk. Jlnuio- y 



Plujt.t.73.f.6. 

 y. Trichomanes aliud, foliis mucronatis ])rofundc incisi.s. Sibb.Scot. 



sect.2.i>2.t.3.f. \. 



On shady rocks, and old walls, frofiucnt, 



I*ercnnial. Maij — Dcrmdni . 



Root of many fibres. Frmnh several, tuffcd. linear, simply pinnate, 



VOL. IV. x 



