210 CRYPTOGAMIA FILICES. [CI. 24. 



globules. Masses nearly marginal, at length confluent. Root 

 tufted. 

 Heathy mount. If . 6. Thrice as large. R. large and scaly. 



4. A. Filix mas, 21. 1458. (Male Sh.) Frond doubly pinnate ; leaflets 



obtuse, serrated, partly confluent. Stalk scaly. Masses near the 

 midrib. Cover orbicular. 

 Woods and shady pi. If.. 6,7. R. like the last. Fr. 3f Masses 

 copious. 



5. A. cristdtum, 30. 2125. (Crested Sh.) Frond linear-oblong, almost 



doubly pinnate; leaflets decurrent, ovate, obtuse, crenate, orpin- 

 natifid, with little sharp terminal teeth. Stalk scaly at the base. 

 Masses equidistant from the midrib and margin. Cover orbicular. 

 Boggy heaths, ver}*- rare : Norf. Suff. and Notts. {Dr. Howitt.) 

 If. 6, 7. R. tufted. Fr. 1 — 2 f. pale yellowish-green. 



6. A. aculedtum, 22. 1562. (Prickly Sh.) Frond doubly pinnate ; 



leaflets ovate, pointed, stalked, somewhat crescent-shaped, 

 fringed with prickly serratures. Midribs all scaly or shaggy. 

 Cover orbicular, flat. 

 Shady pi. If. 6. R. tufted, large. Fr. 2f. dark green, paler beneath. 



7. A. angidare, Suppl. 2776. (Angular-leaved Sh.) Frond doubly 



pinnate ; leaflets ovate, bluntish, stalked, fringed with bristly 

 serratures, each leaflet with a lateral lobe at the base ; the 

 lowermost elongated, partly pinnatifid. Stalk scaly. Ribs all 

 shaggy. Cover orbicular, umbilicated. 

 Shady pi. If. 7. Softer and more delicate. Leajl. more copious. 

 Masses crowded. 



8. A. lobdtum, 22. 1563. (Close-leaved Prickly Sh.) Frond doubly 



pinnate ; leaflets elliptical, pointed, decurrent, slightly crescent- 

 shaped, somewhat serrated ; the foremost of the lowest pair very 

 large. Stalk and midrib scaly. Cover orbicular, umbilicated. 



Shady banks. If. 6. Fr. firmer, narrower, of a paler green, and 

 more polished. 

 *8. A. rigidum, Suppl. 2724. (Rigid Sh.) Frond lanceolate, bipin- 

 nate. Leaflets subcordate-oblong, obtuse, pinnatifid-serrate ; 

 the segments subbidentate ; the teeth mucronulate. Stalk and 

 midrib chaffy. Masses in the upper half of the frond. 



Mountains of Yorkshire. If. 6. Smaller than the following ; with 

 narrower fronds and more closely placed leaflets. 



9. A. spinulosum,2\. 1460. (Prickly-toothed Sh.) Frond somewhat 



triangular, smooth, doubly pinnate ; leaflets decurrent, on a 

 winged stalk, elliptical, deeply serrated, with prickly teeth, and 

 a zigzag midrib. Stalk elongated, scaly at the base. Cover 

 orbicular, with a lateral notch. 

 Marshy pi. rare.lf . 6, 7. R. somewhat creep. Fr. If. of a fine light 

 green. 



10. A. dilatdtum, 21. 1461. (Sharp-toothed Sh.) Frond doubly pin- 

 nate ; leaflets deeply pinnatifid ; lobes deeply serrated, with 

 prickly teeth. Common stalk scaly. Cover kidney-shaped, tumid; 

 finely orbicular, with a lateral notch. — A. spinulos. /3. Br. Fl. 



