32 
POLTPODIACEJE — POLYPODIES. 
14. G. DissiMiLE, J. Smith (Polypodium, Linnam). — A handsome evergreen stove Fern, from the West 
Indies. Fronds slender, pendulous, two to three feet long, pubescent, pale green, lanceolate, pinnate, the pinn® 
distant, sessile, suh-falcate, lanceolate-acuminate, membranous, undulated, and somewhat deflexed, the lower 
ones standing forward. Sori biserial. Fronds articulated on a scaly, creeping rhizome. 
15. G. ALBO-PUNCTATUM, /. (PoLYPODiuM, — A Very ornamental evergreen stove species, from 
Brazil. Fronds broadly lanceolate, pubescent, pale green, from two to three feet long, the upper surface 
scattered over with small white scales ; they are lateral, articulated on a short, scaly, creeping rhizome. Fronds 
pinnate, with lanceolate-acuminate, nearly entire, membranous, undulated pinnse, having the inferior base trun- 
cate, and the superior adnate ; the upper ones are sessile. Sori uniserial. 
16. G. MENisciFOLiuM, J. Smith (Polypodium, Langsdorf and Fischer ; P. longifolium, Fresl; P. Preslia- 
NUM, Sprengel — fide Kunze). — A tall, glabrous, evergreen, stove species, from Brazil. Fronds lanceolate, three 
to four feet long, pinnate, with lanceolate-acuminate, undulated, shining, bright green pinnse, from six to eight 
inches long, having their inferior base roundish, and the upper one adnate. Sori large, yellowish brown, gene- 
rally biserial. Stipes and rachis green, lateral, articulated on a thick, scaly, creeping rhizome. 
17. G. DisTANS, M. and S. (Polypodium, Maddi; Marginaiiia msiKss, Fresl ; G. dbflexum, of gardens '). — 
An ornamental, evergreen, stove Fern, from Brazil. Fronds glabrous, two feet long, pinnate, with lanceolate- 
acuminate, coriaceous, undulated, deflexed pinnse, of a dull green, roundish at the base, and articulated with the 
rachis; the lower pinnae are sometimes divided. Sori triserial. Stipes and rachis blackish green, lateral, 
articulated on a moderately thick, scaly, creeping rhizome. 
X. CYRTOPHLEBIUM, R. Brown. 
Sori round, naked, lateral or terminal, arranged in two rows between 
and parallel with the primary veins, or irregular. Veins pinnate or 
forked; lower exterior venule free and fertile, the others arcuately or 
angularly anastomosing, producing from their exterior side two or more 
excurrent, free, fertile veinlets, which are sometimes very short, often 
uniting with the next superior venules, forming two rows of areoles 
between each two primary veins. Fronds simple or pinnate, from one 
to three feet long, glabrous, coriaceous or somewhat membranous. 
Rhizome creeping. — Name derived from kyrtos, curved, and phlej)s, a 
vein ; alluding to the convex or curved form of the venules. 
There are various technical characters by which to distinguish this 
genus from the preceding ones, some of them of minor importance, and 
perplexing unless to a practised eye ; the most essential, however, and 
those by means of which it is easily recognised, are the arcuate venules, 
combined with two series of sori, between each two of the primary veins. 
Fig. 11 represents the upper portion of a frond of Cyrtophlehium 
repens (nat. size). 
1. C. ANGUSTIFOLIUM, J. Smith (PoLYPODIUM, Swartz ; P. DIMOEPHUM, Link ; 
Marginauia DiMOKPHA, Link; M. angustifolla, PresZ). — A slender evergreen 
stove Fern, native of the West Indies and South America. Fronds glabrous, 
simple, linear, attenuate, very narrow, reclining, with a somewhat revolute 
margin, coriaceous, from a foot to a foot and a-half long, dull green, decurrent 
at the base ; lateral, articulated on a short, creeping, scaly rhizome. Sori 
medial ; veins immersed. There are two forms of this plant. 
2. C. repens, j. Smith (Polypodium, Swartz; Campyloneurum, Fresl). 
— A creeping evergreen stove speeies, from the West Indies. Fronds simple, 
reclining, lanceolate-acuminate, from one to one and a-half foot long, glabrous, 
undulated, rather membranous, deep green, deeurrent at the base. The upper 
surface of the fronds is scattered over with white scales, attached opposite the 
apex of each veinlet. Sori round, terminal. Fronds lateral, articulated on a 
scaly, slender, creeping rhizome. 
3. C. NiTiDUM, J. Smith (Polypodium, Kaulfuss; Campyloneurum, Fresl). 
A rigid and rather erect-growing stove Fern, native of the West Ij.dies. 
Fronds glabrous, from one to two feet long, coriaceous, undulated, deep 
Fig. 11. 
green and shining, lanceolate- 
