Old. 1.] CRYPTO GAM I A FILICES. 211 



Moist shady pi. If . 6, 7. R. tuberous. Fr. general/.// 2f. ; midribs 

 straight. 



1 1 . A. dumetorum, Pluk. Phy t. tab. 80. f. 4. (Thicket Sh.) Frond 

 doubly pinnate ; leaflets pinnatifid ; lobes with terminal, sharp, 

 prickly teeth. Common stalk scaly. Cover orbicular, flat, with 

 a deep notch. 



Shady stony pi. If. 7. One-third the size, but agreeing in habit. 

 Masses few. — A var. of A. spinulos. ? 



12. A. Filix fcemina, 21. 1459. (Female Sh.) Frond doubly pinnate; 

 leaflets linear-oblong, pinnatifid, serrated, pointless. Stalk smooth. 

 Cover oblong, finally somewhat kidney-shaped, jagged. 



Wet shady sit. If . 6, 7. R. tufted. Elegant, 2f.ofa rich deep 

 green. 



13. A. irr'iguum, 31. 2199. (Brook Sh.) Frond lanceolate, doubly 

 pinnate ; leaflets oblong, deeply serrated, pointless. Stalk qua- 

 drangular. Cover roundish-oblong, finally kidney-shaped, jagged. 



About clear springs in the South. If. 6. Not unlilie the last, but 

 scarcely \ so large. Fronds narrower, and of a paler green. 



465. CYSTEA. Bladder-fern Cystopteris, Br. Fl. 



1. C.fragilis, Cyathea fr. 23. 1587. (Brittle B.) Frond oblong-lan- 



ceolate, doubly pinnate ; leaflets ovate, acute, pinnatifid, cut or 

 serrated. Midribs bordered. Masses crowded. Cover irregularly 

 torn. 

 Wet shady rocks, or walls ; in mountainous districts. If. 6, 7. JR. 

 tufted. Fr. a span ; of a full green. 



2. C. dentata, Cyath. dent. 23. 'l588. (Toothed B.) Frond oblong- 



lanceolate, doubly pinnate ; leaflets ovate, obtuse, pointless, 

 bluntly toothed, partly pinnatifid. Partial midribs bordered. 

 Masses crowded ; finally confluent. 

 Among alpine rocks. If. 7. Like the last, but rather smaller. 



3. C. angustdta, Suppl. 2790. (Deep-cut B.) Frond oblong, doubly 



pinnate ; leaflets lanceolate, decurrent, wavy, or pinnatifid, with 

 linear, acute, partly cloven segments. Masses scattered, distinct. 

 Shady alpine sit. If. 6, 7. R. tufted, black. Fr. 12—15 in. Stalk 

 slender, blackish. 



4. C. regia, Cyath. incisa, 3. 163. (Laciniated B.) Frond lanceolate, 



doubly pinnate ; leaflets deeply pinnatifid, with oblong, blunt, 

 partly notched segments. Partial stalks winged. Masses nume- 

 rous, scattered, distinct Cystopteris alp., Br. Fl. 



Walls & alp. rocks, rare. If . 6. 3 — 10 in. bright gr. Ribsstraightish. 



466. ASPLeNIUM. Spleenwort. 



1. A. Trichomanes, 8. 576. (Common S.) Frond linear, pinnate; 



leaflets roundish-ovate, crenate. Midrib coloured, polished; 

 keeled underneath. 

 Rocks & walls. If . 3 — 10. Fr. several, scarcely a span. Stalk blackish . 



2. A. viride, 32. 2257. (Green S.) Frond linear, pinnate ; leaflets 



