HLICES. 649 



Tkibe I. OPHIOGLOSSEJS, R. Br. — Sporangia exannulate, coriaceous. 



1. OPHIOGLOSSUM, L. 



Sort 2, liuear, along a narrowly contracted, petioled leaf-segment, each of 1-serial, co- 

 hering, vertically lialf-2-valved sporangia. — Fertile leaf-segments single (or several), in- 

 ferior. 



^ 1. O. reticulatum, i. Khizoma excrescent; &</ single, cordate-deltoid, or mbcor- 

 date, pointed, entire : no midrib ; veins in a network with appendages : fertile segment 

 (spike) single from the base of the blade, long-petiolulate, linear, macronate. — Plum. Fit. t. 

 164. Book. Grev. Ic. t. 20.— Leaf l''-3" diam.— Hab. Jamaica !, Wils., Pd., common in 

 coffee-plantations. Port Koyal ; Montserrat {P.Br.); [Cuba I to French islands!,' and all 

 tropical countries]. 



2. MARATTIA, Sw. 



Sori longitudinally 2-partite, dorsal on a veinlet ; segments connivent, at length spread- 

 ing, 10-4-celled : cells (sporangia) dehiscent by vertical-introrse fissures. — Leaf 2-several- 

 times pinnate, stipulate : veinlets free, simple, or forked : petiole jointed : sori on the under 

 side of the leaf, single on their veinlet. 



2. M. alata, Sw. Leaf 2-pinnate, glabrous: secondary segments oblong-lanceolate, 

 pointed, superior sharplg serrate, inferior pinnatifld below, lowest pinnatipartite ; rhacMs 

 usually paleaceous, secondary ones winged ; sori oval, sessile, supported by scales. — Sm. lo. 

 Ined. t. 46. Hook. Gen. t. 26.— 2'-3' high ; secondary leaf-segments -I" long, 4'" broad. 

 — Hab. Jamaica !, Pd., Al., Wils., in woods at the base of the Blue Mountains j S. Vincent !, 

 Guild. ; [Cuba ! to Venezuela I]. 



M. Icevis, Sm. (serratures and lobes bluntish), was probably sent from Haiti, not from 

 Dominica ; but according to Mr. J. Smith (Bot. Herald, p. 343) it is only a form of M. 

 alata, Sw. 



3. DANJ:A, Sm. 



Sori linear, on approximate, excurrent veins, many-celled, surrounded by a plait : cells 

 (sporangia) 2-seriaI, dehiscent by a terminal pore. — Leaves pinnatisect {-simple), charta- 

 ceous : segments of the fertile leaf narrower than of the sterile one : veins costdte, Z-par- 

 tite-forked, or simple ; rhachis usually jointed. 



3. D. nodosa, Sm. Leaf-segments linear-oblong, pointleted, quite entire (or serrulate 

 at the summit), distant, "\h-}v,gal:" rhachis naked: fertile segments lanceolate-linear, 

 acuminate. — Plum. Fil. t. 108. Hook. Qrev. Ic. t. 51. — Asplenium, L. — 4'-5' high j 

 leaf-segments 10" long, li' broad, fertile ones 7"-4" long, 12"'-8"' broad.— Hab. S. Vin- 

 cent !, Qv,ild. ; [Cuba ! to Brazil], 



4. D. elliptica, Sm. Leaf-segments elliptical-lanceolate or lanceolate-oblong, ■foini- 

 leted, quite entire, distant, i-Q-jugal : rhachis slightly margined above : fertile segments 

 lanceolate, acuminate. — SI. t. 41. f. 1. Hook. Grev. Ic. t. 52. — 2' high ; leaf-segments 

 eM" long, 2"-]^" broad, fertile ones 5"-2" long, 10"'-5"' broad.— Hab. Jamaica 1, Pd., 

 in moist woods ; S. Vincent I, Guild. ; Trinidad I, Or. ; [French islands ! to Venezuela !]. 



5. D. stenophylla, £ji. Leaf-segments linear or lanceolate-linear, pointleted-acumi- 

 nate, entire below the sharply serrulate summit, approximate, Vi-Va-jugal, lowest shorter : 

 rhachis margined: fertile segments linear, acuminate. — Kunz. Farnkr. t. 28. — 2'-3' high ; 

 leaf-segments 4" long, 6'" broad, fertile ones 4"-l" long, 2"'-3"' broad.— Hab. Jamaica !, 

 Pd., in moist woods ; [Guadeloupe !]. 



6. D. alata, Sm. Leaf-segments linear-oblong, acute, or pointleted, sharply serrulate 

 towards the summit, 9-\].-jugal, lowest short, more distant than the rest : rhachis nar- 

 rowly winged (except at the base) : fertile segments lanceolate-linear or oblong-linear. — 

 Plum) Fil. t. 109. Hook. Grev. Ic. t. 18.— D. Moritziana, Prl. sec. Eat. in PI. Wr.— 

 li'-2' high ; leaf-segments 8"-5" long, 8"'-10"' broad, fertile ones l"-3" long, 4"'-3"' 

 broad.— Hab. Jamaica {Sw.) ; S. Vincent {Guild) ; [Cuba ! to French islands ; Vene- 

 zuela]. 



