34 
POLYPODIACEJE — POLYPODIEJJ. 
to eight inches long, decurrent at the base. Both are of a light shining green, and are articulated on a small 
scaly creeping rhizome, of the size of a crow’s quill. Sori confluent on the upper half of the frond ; yeins and 
costa immersed. 
4. N. vAiiius, Kaulfuss . — An ornamental evergreen stove Fern, from the Malay Islands and Singapore- 
Sterile fronds lanceolate-acuminate, from six to twelve inches long, decurrent at the base. Fertile fronds linear- 
lanceolate, acuminate, decurrent at the base, one foot long. Both kinds are densely covered throughout with 
stellate pubescence, and are articulated on a slender scaly creeping rhizome. Sori on the upper part of the frond, 
confluent in oblong masses ; costa nearly immersed. 
5. N. Lingua, Sprengel (Acrostichum, Thunherg ; Polypodium, Craspedaria chinensis, ZzWc). — 
A very pretty evergreen warm greenhouse species, from China and Japan. Sterile fronds lanceolate-acuminate, 
six to ten inches long, decurrent at the base, dull green on the upper surface, and whitish beneath. Fertile 
fronds contracted, but nearly of the same form as the sterile, and of equal length. Both are articulated on a 
slender scaly creeping rhizome. Sori arranged in transverse parallel rows, between the primary veins, through- 
out the whole under surface of the frond, brownish red ; costa elevated ; veins immersed. 
XII. PHLEB ODIUM, E. Brown. 
Sori round, oval, or rarely oblong-linear, transversely uniserial or biserial, sometimes irregular. 
Veins pinnate, or variously branched ; venules arcuately or angularly anastomosing, producing on 
their exterior side, or at their angular junction, two or more conniving vemlets, which are sporangi- 
ferous 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 membranous. 
Rhizome creeping. — Name derived from plilebos, a vein; from the gene- 
rally conspicuous venation. 
The species oi Phlebodium resemble some of the Gonioplilehiums and Frynarias 
in habit, and in the circumscription of their fronds. The 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. 13 represents a portion of a segment of 
Phlehodium glaucum (nat. size). 
\ Anapeltis, J. Smith . — Fronds simple ; sori without scales. 
1. P. SQUAMULOSUM, /. AhiAA (POLYPODIUM, ; P. MYRTILLIFOLIUM o/y ; 
Pleopeltis, Fresl ). — A dwarf creeping evergreen stove Fern, from Brazil. Sterile fronds 
simple, oblong-elliptical, erect, two to three inches high, dull green, coriaceous, attenuated 
at the base, and articulated on a scaly creeping rhizome, of about the thickness of a goose- 
quill. Fertile fronds linear, obtuse. 
2. P. VENOSUM, J. B. (PoLYPODiuM, Besvaux ). — An elegant dwarf evergreen stove 
species, from South America. Sterile fronds simple, oblong-lanceolate, six to eight inches 
long, undulated, attenuated at the base, dull green, with conspicuous dark veins. Fertile 
fronds slightly contracted, linear-lanceolate, attenuated at the base, six to eight inches 
long. Both forms are scaly on the rachis and stipes, and are lateral, articulated on a 
creeping scaly rhizome, about the size of a goose-quill. Sori oval or oblong, uniserial. 
3. P. LYCOPODioiDES, J. Smith (Polypodium, Linnmus; P. glabellum, Beu-ard ; 
Pleopeltis, PresT). — A very dwarf creeping evergreen 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, membranous, undulated, and light green. Sori round, 
uniserial. Fronds lateral, articulated on a very slender scaly creeping rhizome. 
4. P. NiTiDUM, J. Smith (Polypodium nitidulum, Kunze). — A dwarf evergreen stove 
Fern, from Honduras. Fronds glabrous, simple, three to six inches long, oblong-elliptical, 
13 . rounded or obtuse at the apex, attenuated at the base, light green, subcoriaceous and 
shining. Sori round, uniserial. Fronds lateral, articulated on a scaly creeping rhizome, which is scarcely 
the size of a goose-quill. 
6. P. SERPENS, J. Smith (Polypodium, Linnceus ). — A dwarf creeping evergreen stove Fern, from the West 
Indies. Fronds simple, glabrous, lanceolate, subcoriaceous, three to nine inches long, of a bluish green, acuminate 
at the apex, attenuated at the base, entire on the margin, and decurrent on the stipes. Fronds lateral, indis- 
tnictly articulated with a creeping scaly rhizome, about the size of a goose-quill. 
