688 CXLVIi. FILICES. 
Sori marginal as in Cheilanthes but the margin un- 
altered in consistence, escas often curved over 
the young sorus . . . 34, NoTHOLJENA. 
Sori linear or oblong, on veins dive verging "from the 
eem b, sometimes crowded in an intramarginal 
. 35. GnaMurrIS. 
Sori p linear, r, on | the longitudinal snastomosing 
ins of a simple frond 36. ANTROPHYUM. 
Sori ondoak at length completely covering the under 
surface of the fertile fronds o es 37. ACROSTICHUM. 
Spore-cases innumerable in large 'patohes towards the 
end of the fertile fronds . . , 98. PLATYCERIUM. 
TnarsE I. OPnroarossE x. — Barren fronds leaflike ; fertile ones spike- 
like, simple or branched, the stipes of both frequently combined at the 
base (the barren lamina then resembling a leaf on the stipes of the 
fertile one). Spore-cases globular, 2- valved, without any ring, ens 
in 2 rows or in small oe ers on the spike or its branches. Fron 
not circiuate in vernatio 
1. OPHIOGLOSSUM, Linn. 
Barren frond leaflike, entire or forked at the end, reticulately 
veined. Fertile jaming c or Reit Nue d epos pore-eases ses- 
sile and more or less k to < in 2 rows along the rhachis, 
opening in a eed eek as to the spike, longitudinal as to the 
spore-case. 
A small = generally spread over the tropical and temperate regions of the 
globe. Of the two AMAN species one has the wide distribution of the genus, the 
i is Gonia Asiatic 
Barren frond ovate-lanceolate or linear, resembling a leaf 
on the peduncle of the spike 1. O. vulgatum. 
Meroe nd ribbon-like from the base, the o spike appearing 
dunculate on the lamina . 2. 0. pendulum. 
Oo. tum, z oak and Bak. Syn. Filic. 445.—Rhizome 
small, kair. Ase Rada € en a few inches to near 1 foot 
high, "the barren leaflike lamina E or below the middle of the 
stipes, varying from broadly ov or ea ilie and 1 to 2 in. 
long, to ovate and 4 to 1 in. em or narrow-lanceolate or linear and 1 
o 13 in. long, p ae evary iutermediate form and size, copiously reticu- 
late when broad, the veins ore longitudinal and slightly anastomosing 
size 
the lamina is narrow. Spike varying in length with the of 
es e phus, with very few 40 m more than a dozen. € in each 
. f. Fl. Tasm. ii. 158, t de y eee his m. v. 112; € 
—-Hoo 
cura, Willd. and O. costatum, R "he Prod. 1 
N. Australia. Arnhem North Bay, R. Brown. 
