26 
Fronds herbaceo-membranaceous, annual proliferous bi-tri-quadri-pinnatifid dimorphous ; segments of the fertile ones linear, 
revolute siliquiform. Ehizome short, erect. Aquatic ferns. (Moore). 
Ceratopteris thalictroides (Brougn). Fronds bi-pinnate, the fertile ones erect, 6 inches to one foot high, with linear acute segments 
I to 1 inch long ; the margins revolute and covering the fructification their whole length. Barren fronds shorter and more spreadin"' tlie 
segments cuneate with 2-3 oblong or lanceolate lobes, of a soft half-succulent texture. Bentham, Hongkong flora. 443— Parkeria 
pteridioides. Hook. Exot. Fl. t. 147 and 231 ■— 
Common in swampy places, in the plains and sub-alpine jungles. 
PLATE No. LXXV. 
TRIBE 7. OSMUNDINE^. 
OsMUNDA, Linnceus, Gen. Plant, 778. 
(Aphyllocarpa, Cavanilles; — Struthiopteris, Bernhardi ; — Plenasium, /"m/. ;— Osmuiidastrum, /•'/•«/. /—Riedlea, Mirbel in part.) 
Fructifications paniculate, terminal or lateral on contracted rachiform portions of fronds, or occupying distinct contracted fronds. 
Spore-cases crowded on the margins or over the surface of the segments, obovate-globose, pedicillate or sessile, having an incomplete or 
rudimentary gibbous ring, (represented by a few parallel strise) near the apex and bursting vertically in two equal hemispherical valves. 
Veins forked from a central costa ; venules free. 
Fronds coriaceous or herbaceous, pinnate or bi-pinnate, the pinnae or segments often articulate ; fertile segments contracted 
usually rachiform, simple or compound, terminal, medial or basal on the fronds, or sometimes occupying distinct contracted fronds. 
Rhizome caudiciform or tufted. (Moore). 
1. Osniunda regalis (Linn.) Fronds twice pinnate, 1 to several feet high, quite glabrous ; barren segments oblong-lanceolate 
1 to 2 inches long, serrulate, or nearly entire, very oblique at the base. Fertile segments linear i to 1 inch long, forming a terminal 
panicle above the barren branches. Bentham, Hongkong fl. p. 440.— O. Japonica, Thuah. Fl. Jap. 33t». 
Most abundant on the banks of rivers and streams on the Nilgiris and other high mountains on the western side of the presi- 
dency. (Called "The Royal Fern.") 
PLATE No. LXXVL 
2. Osmunda Javanica (Blume) Fronds 1 to 2 feet high or more, glabrous, simply pinnate. Barren segments linear or linear- 
lanceolate 3 to 6 inches long, entire or more or less deeply serrate. Fertile pinnae occupying the centre, or rarely the base or summit of 
the frond, each pinna pinnatifid or almost pinnate, with numerous globular or oblong segments (or clusters of spore-cases). Bentham, 
Hongkonk Fl. p. 441. 0. Vachellii. Hook. Ic, P. t. \b. 
Western ghat forests. 
PLATE No. LXXVII. 
Order MARATTIACE^. 
TRIBE MARATTINE^. 
(§ 1.) ANGIOPTERIDE^. 
Angiopteris, Hoffman Comm, G'Ott, XII. 29, t. 5. 
(Clementea Cavanilles ; — Psilodochea, Preel. ; — Polypodii, Sp. Auctorum.) 
Sori dorsal, involucrate, sessile, linear-oblong or oval-elliptic, consisting of two opposite contiguous series of 5-12 free spore- 
cases ; which are obovate retuse, sometimes marginate, affixed by the base, and bursting on the inner face by an obovate or elliptic vertical 
cleft. Receptacles \mQa,v elevated. Involucres linear scariose, fimbriate persistent, retw."; simple or forked from a central costa ; venules 
parallel, free, dorsally soriferous near the margin. 
