FILICES. 703 



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

 penng nito the short petiole : meshes between the straight veins irregular, provided with 

 appendages ; sori \-serial between the veins, inserted at the anastomosis of i-i veinlets. — 

 Plmn.. Pil. t. 123. Hook.. Gen. t. 29: analyt.—Uai 6'-2' long, 5"-2" broad.— Hab. 

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

 Brazil ! and Bolivia ! ; Galapagos !]. 



43. GllAMMITIS, Sw. 



Sori 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 gur 

 species. 



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

 short petiole, glabrate ; veins simple in the sterile part of the leaf, not exaurrent into the 

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

 t. l.fig. sup. dextr.—Voh-puimm, ,Sto.— Leaf 2"-4"(-8") long, 3"'-l"' broad.— Hab. Ja- 

 maica !, Bancr., Fd., on trees. Blue Mountain Peaks ; [Portorico ! to Trench islands ! ; 

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



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

 tiole, glabrous, or subciliate: veins %-fid: both branches excurrent into the margin, the 

 anterior fertile near its base ; sori parallel to the midrib. — Sch/c. Crypt, t. I.fig. sup. med.— 

 Polypodium gramineum, /Sw.— Leaf 3"-5" long, li"'-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; \t&i linear, pinnatifid, or pinnaiipartite below the shorter, fertile part, subsessile : 

 lobes or segments regularly alternate. 



322. X. serrulata, Kimlf.—Schk. Crypt, t. 1. fig. inf. dextr. Fie, Tohjpod. t. 10. B. 

 — Asplenium, Sw. Graminiiis, Sw. Polypodium, Metten. — 1"-4" high ; lobes or seg- 

 ments obliquely deltoid, pointed. 



a. Leaf pinnatifid below the repand fertile part, 4"'-l"' broad: lobes as long as the 

 breadth of tUe rhachis. 



p. myosuroides, Kanlf. Leaf pinnatipartite below the serrate-pinnatifid fertile part : in- 

 ferior margin of the segments longer than the breadth of the rhachis. — Sehk. Crypt, t. 7. fig, 

 inf. sin. — Polypodium, Sw. Grammitis, Sw. 



Hab. .lamaica!,^;., summit of the Blue Mountains (a), {Sw.p) ; Dominica !,/»tr., S.Vin- 

 cent!, Guild, {a); Trinidad!, Cr.{a); [most tropical countries ; ;3: Mexico to Brazil!]. 



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

 an oblique, complete ring. — Stem arboreous. 



45. LOPHOSORIA, P//. 



(Trichosorus, Liebm.) 



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



dusium. — Stems low, " subeeespitose," unarmed: leaves S-pinnaiisect : secondary segments 



decurrent, tertiary pinnatipartite, quaternary with free, simple, pinnate, Z-i-jugal veinlets. 



323. Ii. pruinata, Pr.—Schk. Crypt, t. 25. }.— Polypodium, Sw. P. griseum, Sehk. 

 AJsophila, raa^.- Leaves glaucous beneath, villous at the rhachis, woolly at the base of the 

 petiole: primary segments about 2', secondary 6"-4", tertiary 6"'-5"', quaternary li"'-2"' 

 long, the latter oblique, pointed, or bluntish, entire.— Hab. Jamaica!, Wiles, Al, m moun- 

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



46. CTATHEA, Sm. 



Sori globose, inserted into the hack or at the forking of a veinlet : indusium complete, 

 closed at first dehiscent: receptacle prominent.— Veinlets pm««te,/re^,/orAe<<, or simple. 



