FILICES. 



462 WOODWARDIA. 



moist woods. Fronds 1—2 feet high, with subopposite divisions. These are 

 subdivided into distinct, obtuse segments which are themselves cut into oblong 

 deep serratures, and lastly, the serratures are mostly with 2—3 teeth at the 

 summit. Soii large, at first in linear curves, finally confluent, giving the 

 whole frond a dark brown hue. July. 

 7. A. Ruta-mura'ria. Wall-rue Spleenwort. 



Frond bipinnate at base, simply pinnate above ; leaflets small, petiolate, 

 cuneate, obtusely dentate above. An extremely small and delicate fern, in 

 dry, rocky places. Frond 2-3 inches high, ^ as wide, smooth, growing in 

 tutls, somewhat coriaceous. Segments usually 3 on each leaflet, less than i 

 iiicli long. Stipe flat and^smooth. Sori linear-oblong, slightly oblique, of 

 a rusty brown color, finally confluent. July, 



4 . W O O D' S I A . 

 Sori ronndisb, scattc-red ; indusium beneath the sorus, open, 

 with a miiltilUl or frhiged margin, including the pedicellate 

 (hecaB like a calyx. 



1. W. ilve'nsis. Br. Polypodium. mild. 

 Frond pinnate, leaflets pinnatifid, lanceolate ; segmeJits ovate-oblong, 



obtuse; 5»ri near the margin, at length confluent ; rachis and st'jje chafi'y. 

 GrowintT in tufts on rocks and in dry woods. Fronds 5 or 6 inches high, on 

 chaftV and woolly stipes, most chafiy at base. Fohage 3 or 4 inches long, ^ 

 as wide oblontr-lanceolate in outline, woolly or chaffy beneath, with opposite 

 and alternate leaflets about an inch in length. The lower leaflets are pinnati- 

 fid, upper ones wavy on the margin or entire. June. 



2. W. Perria'na. Hook. S^ Grev. Hypopeltis obtusa. Torr. 

 Frond subbipinnate, minutely glandular-pilose; segments of the leaflets 



pinnatifid, ultimate sesmmts roundish-oblon^, obtuse, bidentate ; sori sub- 

 inaro-inal ; stipe somewhat chafty. About a toot high, among and on rocks. 

 Fronds lance-oblong in outline, 3 times as long as wide. Segments of the 

 leaflets crenate-serrale, the lower ones distinct, upper confluent. Son orbic- 

 ular, becoming nearly confluent, each subtended by a half-round indueium 

 notched into Ultle teeth on the margin. July. 



3. W. iiYPERBo'KEA. Br. Floicer-cup Fern. Polypodium. Willd. 

 Frond pinnate; leaflets suborbicular, subcordate, 3-parted or incisely 



pinnatifid, cuneale at base, rough-pilose beneath. A very small species much 

 re'-emblino- the last, forming tuils on rocks. Plant 2—4 inches high. I ronda 

 lance-linear in outline, on very scaly stipes. Leaflets d or 10 pairs, suboppo- 

 site, nearly round, 2 or 3 lines in diameter, the margins only crenate above, 

 deeply pinnatifid in the lowest pairs. July. 



4. W. RUFi'uuLA. Beck. W. ilvensis and Aspidium rufidulum. P. 

 Frond bipinnate ; segments of the leaflets hairy, oblong, obtuse, pinnatifid, 



with obtuse ultimate segments ; sori at length confluent ; stipe and rac.his 

 hairy Grows on rocks. Fern G— 8 inches high. Stipe dark brown, densely 

 clothed with woolly hairs. Frond hairy both sides, its leaflets 4—8 lines long, 

 lower ones distinctly pinnate, upper pinnatifid. July. 



5 . W O D W A' R D 1 A . 

 Sori oblong, straight, parallel with the ribs on either side 

 of them; indusium suiierficial, arched or vaulted, opening 

 inwardly. 



