ORDER 159. FIL1CES. 423 



3 A. TRAPEZIOFORME. Frond ample, decompound, glabrous, 2f; segments light green, 



large (12 18" x 610"), trapezoidal, some of them fan-shaped ; sori lunulate on 2 of 

 the 4 margins ; stipe jet-black. Superb ! Jamaica (Rev. S. B. Wilson). 



4 A. SANCTA-KATRINA, has large obliquely fan-shaped segments cnt-lobed and toothed, 



with the veins uncommonly distinct. Cultivated in Bridgman's Garden, Astoria. 



5 A. CapsJlus-Veiieris L. Delicate, bright green, 618', smooth, thrice pinnate at 



base; segments ronnd-cnncate, lobcd. or the sterile toothed; sori reniform, one on 

 each lobe; stipe and branches capillary. Lime-rocks, S. : rare. Eur. Cultivated. 



6 A. CUNEATU.M. Very delicate, If, 4 times pinnate at base, bright green; segin. very 



numerous, sharply cuneate, 2-4-cnt-Jobed, 4 (5" ; sori round-reniform. Brazil. 



7 A. yETiiioncuM, TINCTUM and CALLOPODES, are greenhouse species or varieties, with 



roundish segments more or less oblique and lobed, 4 7", with rounded sori, 6 12'. 



8 A. ALATUM, has the rachis narrowly winged, scgm. sessile, obovate-long-wcdge-shaped 



at base, coarsely toothed at apex. (Greenhouse of Bridgman & Wiegand.) 



A. MACROPHYLLUH. Stipe jet-black, simple, bearing about 3 pairs of large, opposite, 



thick leaflets, and an odd one ; leaflets triang.-hastate, oblique ; sori linear. Jamaica. 



22. DICKSONIA, L'Her. DICKSON'S FERN. Sori marginal, round- 

 ish, distinct, terminating a vein. Indusiuni double, the proper one cup- 

 ehaped, opening outward, the other formed of a reflected lobule of the 

 margin, and opening inward. 



1 D. pilosiuscula Willd. Frond bipinnate, lanceolate, 2 3f, with minute glandu- 



lar hairs ; pn. sessile, lanceolate ; segm. finely pinnatifid, lobes toothed, each with a 

 minute round sorus. Rocky pastures. Stipe yellowish. 



2 . (BALANTIUM) ANTARCTICA. A beautiful tree-fern from New Zealand, 3 20f, 



crowned with many long, heavy, dark-green, tripinnate fronds ; pn. and pnl. sessile; 

 segm. oval, G-crenate ; sori globular, with 2 distinct valves. (Buchanan's Conserv.) 



23. DAVALLIA, Smith. Sori globous, marginal, on the end of a 

 v r ein, in a goblet or pyxis, half of which is formed by the scarious indusium 

 opening outward. Root-stock creeping above ground, chaffy. 



1 D. TENUIFOLIA. Fronds delicate, 6 10', tripinnate with few pinnae, triangular-lan- 



ceolate ; rachis narrowly winged ; segments spatulate, toothed. China. 



2 I>. CANARIENSIS. Hare's-foot. Fronds 3-parted, decompound, ultimate segments el- 



liptical, decurrent, bearing 1 pyxis. 1 2f. Canaries. 



3 I>. DISSECTA, is very different, irregularly pinnatifid, or almost entire. 



24. WOODWARDIA, Sm. Sori straight, linear-oblong, on transverse 

 veinulets, parallel to the mid-vein, in 2 rows. Indusium from the same 

 veinulet, opening inwardly. 



LORINSERIA. Fronds of 2 forms, net-veined throughout No. 1 



ANCHISTEA. Fronds all similar, netted only close to mid-vein Nos. 2, 3 



1 W. angustifolia Sm. Fertile fronds pinnate, with distant linear pinnae covered 



with the fruit beneath ; sterile lance-oblong in outline, deeply pinuatifid ; segm. ob- 

 long, 2 3f. Resembles Onoclea. Mass. (Dr. S. Bowles), and S. 



2 \V. Virginlca Sm. Fronds glabrous, lanceolate, pinnate; pinnae remote, pinna- 



tifid, lance-linear; segments oblong, obtuse, 2 3f. Swamps, E. and S. 



3 W. JAPONICA. Rachis chaffy ; frond triangular, as broad as long ; pinnae lanceolate, 



pinnatifid, with ovate segments. Bright green. 1 2f. 



25. DOODIA ASPERA. Fronds rough, lanceolate, pinnate, If, in clumps, 

 the caudex a few inches above ground. Pinnae oblong-linear, contiguous, with epines- 

 cent teeth. Sori in 1 or 2 rows each side. D. CAUDATA has linear-lanceolate, pinnate 

 frond*, with remote serrate segments, the terminal one elongated. Both from Australia. 



