25 
TRIBE 1. (§ 19) PERANEME^. 
Peranema, Don. Prod. Fl. Nep. 12. 
(Shgeropteris, Wallich ;—E. Broivn (non-Bernhardi) ; Podeilema, ^. Brown, MS. ; Nematoptera, A''MM2e; ) 
Sori iiivolucrate, globose ; the receptacles globose, stipitate, medial on the lower anterior venules. Involucre coriaceous, stalked, 
globose, entire, at length bursting vertically into two irregular valves. Veins forked or pinnate, from a central costa ; venules free, 
thickened at the apex. 
Fronds tri-pinnate, herbaceous, the stipes and rachis densely clothed with spreading scales.— Ehizome large globose— (Moore), 
1. Peranema cyatheoides (Don.) Fronds 2-3 feet long tri-pinnate; the base of the stipes densely clothed with long brown 
membranaceous acuminated scales ; the main and partial rachis with fewer scattered smaller ones. Pinnules oval, oblong, sessile, decur- 
rent, so that the partial rachis is winged, obtuse, glabrous, turning brownish black in drying, nerves indistinct ; rarely more than one 
sorus on each pinnule, stalk of the involucre often longer than the involucre it's.Ai— Hooker, Sp. Fit. 1. 58. Sphteropteris barbata 
Wall, in Herb. 1823, Cat. n. 183 ; PI. Asiat. Par. p. 42 t. 18. 
Western ghats— rare. 
PLATE No. LXXIII. 
TRIBE 4. GLEICHENINE^. 
Gleichenia, Smith, Mem. Acad. Turin. V. 419. 
(Mertensia, TFi/Zo^ejiozi' ;— Dicranopteris, Bernhardi ;—Qd.\Ym.(i\\a., Z'm^. ;— Sticherus, Pres/. ;— Hicriopteris, Presl. ;~Q\qiq,\\- 
euiastrum, Presl. ;— Platyzomatis Sp. Desvaux ;—) 
Sori non-indusiate, round, superficial, or immersed, consisting of few (usually 2-4 sometimes 5-6 or even &-12) spore- 
cases, which are sessile, deciduous, globo.so-pyriform, sometimes concealed by the revolute margins ; the receptacles terminal or medial or 
axillary on the venules. Veins simple or forked, from a central costa ; venules free, the lower anterior one usually soriferous. 
Fronds rigid, rarely simply pinnatifid, usually once or oftener dichotomously branched, the ultimate branches pinnatifid or pin- 
nate ; the segments small, ovate, or orbicular, and sometimes remarkably revolute, or larger plane linear or oblong. — Rhizome creeping 
(Moore.) 
1. Gleichenia dichotoma. (Willd.) Stipes rounded, ultimate branches with a pair of pinnae, and a pair also at the base of the 
di-trichotomy, pinnse lanceolate, acuminate, pinnatifid, segments linear, obtuse, or emarginate, glaucous beneath, glabrous or nearly so, 
lower external ones generally the largest, often again pinnatifid, capsules 8-12. — Hooks. Sp. Fil. 1. p. 12. — Mertensia dichotoma, 
Willd. — Mertensia discolor, Schrad. — M. Sieberi, Presl. — Polypodium dichotomum, Thunh. Jap. t. 37, — Gleichenia, lanigera, Don. — 
Sticherus, laniger, Prf5^.— Gleichenia Hermanni, Br. Prod. p. 161.— Mertensia, Hookeri, J. Smith.— M. flexuosa, 3fart. Crypt. Brazil, 
p. 108. — M. Pusilla, Mart, I. c. p. 111. — Gleichenia rigida, J, Smith. 
A very common fern from the sea level on the western coast to the tops of the highest mountains,— ravines on the North 
Arcot hills. 
PLATE No. LXXIV. 
TRIBE 6. CERATOPTERIDINE.^. 
Ceeatopteei-s, Brougniart, Bull. Soc. Phil. 1821, 184. 
(Teleozoma, P. 5ro?i)?i ;— Cryptoyenis, Richard, 3/^. ;— Chladostachys, Wallich, i//S'. ;— Ellobocarpus, Kaulfuss ;—?a.Tkena,, 
Hooker ; — Belvisia, Mirbel in part ; — Furcaria, Desvaux ; — Pteridis, Sp. Auctorum; — Acrostichi, Sp. Auct.) 
Sori indusiate, continuous, occupying the longitudinal veins, spore-cases few, loosely disposed, globose, furnished with a very 
broad incomplete ring, of which from one-third to three-fourths or more is wanting, (sometimes almost obsolete consisting of 3-4 stria?). 
ludusium universal, formed of the membranaceous rovolute margins of the narrow siliquiform segments. Veins of the sterile frond? 
uniformly reticulated in oblique oblong hexagonal areoles ; of the fertile few, longitudinal, distantly anastomosing. 
