: Mma_ 
THE CENERA AND SPECIES OF CULTIVATED FEKXS. 
scaly creeping rhizome. Sori round, subsequently confluent, covering the whole under surface ; veins and costa 
immersed in the substance of the frond. 
2. JV. rupestris, Sprengel. — A dwarf evergreen greenhouse species, from New Holland. Sterile frond 
roundish or oblong-ovate, one to two inches long, decurrent at the base. Fertile frond linear, three to four inches 
long, obtuse at the apex, and decurrent at the base. Both kinds are dull green, and articulated on a scaly 
creeping rhizome. Sori round, confined to the upper half of the frond ; veins and costa immersed. 
3. JV. pertusus, Sprengel. — A very fleshy evergreen stove Fern, a native of the East Indies, China, and New 
Holland. Sterile frond oblong-ovate, obtuse, decurrent at the base, three to four inches long. Fertile frond 
linear, four to eight inches long, decurrent at the base. Both are of a light shining green, and are articulated on 
a scaly creeping rhizome. Sori confluent on the upper half of the frond ; veins and costa immersed. 
4. N. varius, Kaulfuss. — An ornamental evergreen stove Fern, from the Malay Islands and Singapore. 
Sterile frond lanceolate-acuminate, from six to twelve inches long, decurrent at the base. Fertile frond, linear- 
lanceolate-aciuninate, decurrent at the base, one foot long. Both kinds are densely covered throughout with 
stellate pubescence, and are articulated on a scaly creeping rhizome. Sori on the upper part of the frond, 
confluent in oblong masses ; costa nearly immersed. 
5. JY. Lingua, Sprengel. (N. chinensis, Link). — A very pretty evergreen stove species, from China and 
Japan. Sterile frond lanceolate-acuminate, six to ten inches long, decurrent at the base, dull green on the upper 
surface, and whitish beneath. Fertile frond contracted, but nearly the same form as the sterile, and of equal 
length. Both are articulated on a scaly creeping rhizome. Sori arranged in transverse parallel rows, between 
the primary veins, throughout the whole under surface of the frond ; brownish red ; costa elevated ; veins 
immersed. 
FHLEBODIUM, R. Brown. (Polypodii, sp. of Authors). — Name derived from phkps, a vein ; from the 
generally conspicuous venation. 
Sori round, oval, or rarely oblong-linear, transversely uniserial or biserial, sometimes irregular. Veins pin- 
nate, or variously branched ; venules arcuately or angularly anastomosing, producing on 
their exterior side, or at their angular junction, two or more conniving veinlets which are 
sporangiferous on their combined apices, or line of junction. Fronds simple, pinnatifid or 
pinnate, from a few inches to four feet long, glabrous or squamiferous, coriaceous or mem- 
branous ; rhizome creeping. — The species of Phlebodiuni in habit and in the circum- 
scription of their fronds, resemble some Goniophlebiums and Drynarias. The principal 
technical characters, by which they are distinguished from other genera, are : the sori being 
produced on the confluent parts of two or more veinlets, which generally terminate in the 
exterior row of areoles ; the irregular branching of the veins and venules ; and the costal 
areole being sterile. Fig. 14 represents a portion of a segment of P. glaucum (nat. size). 
} A^apeltis, J. Smith. 
1. P. squamitlosum, J. Smith: Kaulfuss. — A dwarf creeping evergreen stove Fern, 
from Brazil. Sterile frond simple oblong-elliptical, erect, two to three inches high, dull 
green, coriaceous, attenuated at the base, and articulated on a scaly creeping rhizome. 
2. P. venosum, Hort. — An elegant dwarf evergreen stove species, from South America. 
Sterile frond simple oblong-lanceolate, six to eight inches long, undulated, attenuated at the 
base, dull green, with conspicuous dark veins. Fertile frond simple, contracted, linear- 
lanceolate, attenuated at the base, six to eight inches long. Both forms are scaly on the 
raehis and stipes, and are lateral, articulated on a csespitose creeping scaly rhizome. Sori 
oval or oblong, uniserial. 
3. P. li/copodioidcs, J. Smith : Linnaeus. (P. glabellum, S. Seward). — A rather pretty 
evergreen creeping stove species, native of the West Indies. Fronds simple, two to four 
inches long, oblong-lanceolate, rather obtuse at the apex, attenuated at the base, membran- 
ous, undulated, and light green. Sori round, uniserial. Fronds lateral, articulated on a 
scaly creeping rhizome. 
4. P. nitidmn, J. Smith. — A dwarf evergreen stove Fern, from Honduras. Fronds 
glabrous, simple, three to six inches long, oblong-elliptical, rounded or obtuse at the apex, 
attenuated at the base, light green, coriaceous and shining. Sori round, uniserial. Fronds 
lateral, articulated on a scaly csespitose creeping rhizome. 
I Pleopeltis, J. Smith. 
5. P. percussum, J. Smith: Cavanilles. — An ornamental evergreen stove species, a 
Fig. 14. native of various localities in South America. Fronds simple, about a foot long, lanceolate- 
acuminate, cuspidate, coriaceous, bright green, shining, attenuated at the base, and covered throughout with 
minute peltate fimbriate scales. Sori large, uniserial, seated in dense compact tufts of narrow scales. Fronds 
lateral, articulated on a scaly creeping rhizome. 
$ Phlebodia veile, It. Brown. 
6. P. decumanum, J. Smith : Willdenow. — A glabrous ornamental evergreen stove species, from Jamaica, 
and various places in South America. Fronds slender, light green, pinnatifid, two to three feet long, with 
