FILICES. 703 



319. P. crassifolium, L. Leaf coriaceous, glabrous, lanceolate-oblong, narrowly ta- 

 pering into the short petiole : meshes between the straight veins irregular, provided with 

 appendages ; sort \-serial between the veins, inserted at the anastomosis of 3-4 vein/els. — 

 Plum. fit. t. 123. Hook. Gen. t. 29: analyt.— Leaf G'-2' long, 5 "-2" broad.— Mab. 

 Jamaica!; Dominica!, Imr., S. Vincent!, Guild.; Trinidad!; [Cuba! and Mexico! to 

 Brazil ! and Bolivia ! ; Galapagos !]. 



43. GRAMMITIS, Sw. 



Son oval, or oblong, confined to the upper part of the entire leaf, 1-serial, or confluent, 

 dorsal on a single, free veiulet, naked. — Low Ferns ; veinlets slender at the summit in our 

 species. 



320. G. marginella, Sw. Leaf spathulate-linear, or linear, blunt, tapering into the 

 snort petiole, glabrate : veins simple in the sterile part of the leaf, not excurre?it into the 

 discolor, thickish, often ciliate margin ; sori parallel to the midrib, confluent. — Schk. Crypt, 

 t. I.fig. sup. dextr.— Polypodium," &».— Leaf 2"-4"(-8") long, 3"'-l"' broad.— Hab. Ja- 

 maica !, Bancr., Pd., on trees, Blue Mountain Peaks ; [Portorico ! to French islands ! ; 

 Mexico ! to Peru ! ; S. TIeleua !, Madagascar !, East Indies !]. 



321. G. linearis, Sw. Leaf linear, pointed, cuneate above the slender, puberulous pe- 

 tiole, glabrous, or subciliate: veins 2-Jid : both branches excurrent into the margin, the 

 anterior fertile near its base ; sori parallel to the midrib. — Schk. Crypt, t. 7. fig. sup. med. — 

 Polypodium gramineum, Sw.— Leaf 3"-5" long, H'"-2"' broad: petiole 6"'-12"' long. 

 -^-Hab. Jamaica!, on trees in the Blue Mountains; S. Vincent!; [Guiana, S.Helena, 

 East Indies]. 



44. XIPHOPTERIS, Kaulf. 



Sori oval, confluent, confined to the upper, convex-concave part of the leaf, embraced by 

 its margin, inserted into the lower part of the simple veins, naked : veins slender. — A minute 

 Fern ; leaf linear, pinnatifid, or pinnatiparlite below the shorter, fertile part, subsessile : 

 lobes or segments regularly alternate. 



322. X.iserrulata, Kaulf— Schk. Cry ft. t. I.fig. inf. dextr. F6e, Polypod. t. 10. B. 

 — AspleniuinV^ Sw. Grammitis, Sw. Polypodiuni, Metlen.—l"-4, n high ; lobes or seg- 

 ments obliquely deltoid, pointed. 



a. Leaf pinnatifid below the repand fertile part, i'"-V" broad: lobes as long as the 

 breadth of the rhachis. 



£. myosuroides, Kaulf. Leaf pinnatipartite below the serrate-pinuatifid fertile part : in- 

 ferior margin of the segments longer than the breadth of the rhachis. — Schk. Crypt, t. I.fig. 

 "if. sin. — Polypodinm, Sw. Grammitis, Sw. 



Hab. Jamaica !, Al., summit of the Blue Mountains (a), (Sw. P) ; Dominica !, Imr., S. Vin- 

 cent!, Guild, (a); Trinidad!, Cr. (a) ; [most tropical countries ; 0: Mexico to Brazil !]. 



Subseries 2. Cyathese. — Receptacle prominent (except in Lophosoria). Sporangia with 

 an oblique, complete ring.— Stem arboreous. 



45. LOPHOSORIA, Prl. 

 (Trichosorus, Liebin.) 



Sori round villous, dorsally inserted on the lowest, simple veinlet : receptacle flat, no in- 

 dusium.— Stems low, " subcaspitose," unarmed ; leaves 3-pinnalisecl : secondary segments 

 decurrenl, tertiary pinnatiparlite, quaternary with free, simple, pinnate, 3-4-jugal veinlets. 

 323. I* prninata, Pr.-Schk. Crypt, t. 25. *.-Polypodium, Sw P griseum, Schk. 

 Alsophila, Kaulf. -Leaves glaucous beneath, vrllous a the rhachis woolly at the base of the 

 petiole: primary segments about 2', secondary 6"-4» , tert.ary 6"'-5', quaternary I f '-2 

 long, the latter oblique, pointed, or bluntish, ent.re.-H A B. Jamaica!, If ties, At., m moun- 

 tain-woods; [Mexico! to Southern Chile ! ; Juan lernandez!]. 



46. CYATHEA, Sm. 

 ■ Sort globose, inserted into the back or at the forking of a veinlet : indnsium complete, 

 closed at first dehiscent . receptacle vnm \ nm t.-\exnM^pimnate, free, forked, or simple. 



