VI. GYMNOGKAMMA. 
2r> 
the lower ones distant. Stipes, racHs, and midrib of pinnas shining black. Sori linear, terminal, consisting of 
a single row of spore-cases, near the margin of each segment. Stipes scaly near the base. Fronds adherent to a 
somewhat creeping rhizome. 
4. N. TRioHOMANoiDES, M. Browfi (Ptbris, Linnams). — Avery handsome evergreen stove Fern, from Jamaica. 
Fronds slender, pendulous, one foot long, linear, pinnate, covered especially beneath, with a white farinose 
powder, and brown stellate pubescence ; pinnae oblong, obtuse, bluntly lobed or crenate, cordate and auriculate at 
the base. Sori terminal, confluent, forming a linear continuous marginal band. Fronds terminal. 
5. N. LiEvis, Martens and Gakotti. — A beautiful evergreen warm greenhouse Fern, native of Mexico. Fronds 
linear-lanceolate, pinnate, a foot long, deep green on the upper surface, and densely covered beneath with 
imbricated fringed white scales, which ultimately become of a rich brown ; upper surface scattered over with a 
stellate scaly pubescence ; pinnas stalked, cordato-oblong, round at the apex, inferior ones hastate, and sinuate, 
superior ones entire. Sori linear, continuous, sub-marginal, protruding through the scales, forming a broad black 
band. Fronds lateral or subterminal, adherent to a whitish, scaly, shortly-creeping rhizome. This plant has 
the venation and broad sori of a Flatyloma, but is destitute of an indusium, the margin of the frond being quite 
flat. 
6. N. RUFA, Presl (Chbilanthes fbrruginea, Willdenow). — A slender and rather straggling growing stove 
species, native of the "West Indies and South America. Fronds narrow, linear, from twelve to eighteen inches 
long, woolly, pinnate ; pinnae ovate, oblong-obtuse, pinnatifid, with the stipes and rachis light brown. Sori 
terminal; marginal, forming a linear continuous row of little more than single spore-cases. Fronds adherent to 
a creeping rhizome. 
7. N. siNUATA, Kaulftiss (Acrostichum, Swartz). — A very elegant evergreen stove Fern ; native of Peru, 
Mexico, &c. Fronds one to two feet long, reclining, linear, pinnate ; pinnae cordate- ovate, obtuse, pinnatifid, 
white on the under surface, and densely covered with imbricated fringed scales ; upper surface bright green, 
scattered over with stellate pubescence. Stipes, rachis, and rhizome scaly. Sori terminal ; marginal, consisting 
of a few spore-cases, situated in the sinuses of the segments, protruding through the scales. 
8. N. sauAMATA, J. H. — A dwarf evergreen stove Fern ; from Mexico and Peru. Fronds pinnate, about six 
inches long, rather ovate-lanceolate, scaly beneath, with oblong-obtuse, pinnatifid pinnae, which are dark green 
above and whitish beneath. Sori terminal, continued round each segment of the pinnae. This species is but 
little known in cultivation, although introduced about 1842. 
9. N. LANUGINOSA, Besmux (Acrostichum velleum, Aiton ; N. vbllea, Besvaux). — A very tender delicate 
evergreen greenhouse Fern ; native of the South of Europe, Madeira, &c. Fronds four to six inches high, very 
woolly and brownish on the under surface ; linear-lanceolate, bipinnate, with roundish ovate pinnules, the 
terminal one lobed. Sori round, terminal, subsequently confluent. Ehizome short, somewhat creeping. 
10. N. VESTITA, Besvaux (Chbilanthes, Swartz). [Plate I.] — A slender evergreen frame, or greenhouse 
species ; native of various parts of North America. Fronds from five to ten inches long, densely covered with 
hairs ; linear-lanceolate, bipinnate, with roundish ovate pinnoe, the pinnules pinnatifid ; margin crenate. Sori 
round, terminal, marginal, subsequently confluent. Fronds adherent to a short creeping rhizome. This species 
is often sold for Woodsia ilvensis. 
11. N. DisTANS, R. Brown. — A small evergreen greenhouse Fern ; from New Holland. Fronds six to ten 
inches long ; linear-lanceolate, bipinnate, pinnules oblong obtuse, opposite, sessile and hairy. Sori terminal, 
marginal, confluent. Stipes, rachis, and midrib of pinnaj, covered with scales. Fronds adherent to a creeping 
rhizome. 
12. N. Marant.®, R. Brown (Acrostichum, Linnmus ; Ceterach, Be Candolle). — A rather handsome ever- 
green Fern ; found in the South of Europe and Madeira. Fronds from six to ten inches high, rather stiff, 
densely covered with scales on the under surface; ovate-lanceolate, bipinnate, with oblong obtuse pinnules, the 
lower one stalked, superior ones sessile, entire at the apex. Sori terminal, and marginal. Fronds adherent to a 
thick, short, creeping rhizome. 
13. N. tomentosa, Besvaux (Chbilanthes, Link). — A woolly evergreen stove species ; from Mexico. 
Fronds very handsome, about a foot long, tripinnate, with oblong-linear pinnules, and very small segments, which 
are roundish ovate distant and concave, the terminal one larger. Sori consisting of a few spore-cases on each 
segment. Ehizome short, creeping. 
14. N. Ecrloniana, Kvnze. — This evergreen Fern, the most beautiful species of the scaly section, is a 
native of the Cape of Good Hope, and is best cultivated in a warm greenhouse. Fronds nearly a foot long, 
covered on all parts with narrow white scales which give them a woolly appearance ; they are rather ovate, 
tripinnate, with oblong-obtuse pinnules, and small roundish ovate segments, crenate and concave, the margin 
revolute ; lower ones distant, superior ones sessile. Sori terminal, consisting of a single row of spore-cases on 
each segment, partly concealed by the revolute margin. Ehizome creeping. 
VI. GYMNOGRAMMA, Besmux. 
Non' linear, simple, or often forked, oblique, at length confluent; spore-cases medial, superficial, 
occupying nearly the whole length of the venules, and sometimes echinate. Veins forked, or pinnate ; 
E 
