3 
broad compressed winged above— //ooX-. Sp. Fil i, 124. Bory. in Baperry's Voy. Bot. i, p. 283. Triclibilabiatum, Xees. Hymenopliylliim 
filicula, Bory. in Willd. Sp., PL V, 528. Didymoglossura decipiens, Beso. 
Common on trees on the higher parts of the Nilgiris, Anamallays and Puhiies. 
PLATE No. VII. 
3. Trichomanes rigiditm, (Sw.) — Tufted erect, fronds ovate acuminate harsh rigid dark green almost black when dry, bipinnate, 
the pinnules lanceolate or linear lanceolate cuneate sub-bipinnatifid, more or less deeply, the ultimate segments various in length, subacute 
simple or bifid, rachis terete wingless or as well as the secondaiy rachis with a very narrow wing or margin sometimes setose, involucres 
supra axillary on the inner margin of the lower segments, on the upper side of the ultimate divisions suburceolate-cylindrical free, the 
mouth entire and scarcely spreading, not 2 lipped. Hook. Sp. Fil. i, 133. Trich. pyramidale, TFa^i?. Cat. n. 162. Trich. Achillteifolium, WHld. 
Sp., PL V, P. 512. Trich. obscurum, BL FiL Jar., P. 227. 
In very moist dark localities on the Nilgiris and Anamallays, 3,000 to 4,000 feet elevation— abundant about Walaghat (down tlie 
Sisparah ghat.) 
PLATE No. VIIL 
(b) Involucres tivo valved. 
Hymenophyllum, Smith Alem. Acad. Turin, V, 418. 
(Ptychomanes, Uedivig ; Hymenoglossum, Presl. ; Leptocionium, Pred, ; Sphserodium, Pre&l. ; Myrmecostylum, Pred. ; Cyclo- 
glossum, PresL; Craspedophyllum, Pres/. ; Ptychophyllum, Pm^. ; Sphaerocionium, Pres^. ; TAecoAmm, Presl, j Dermatophlebium, 
Sori involucrate, i. e. seated with an extrorse-marginal oblong or sub orbicular, two valved involucre; the veins continued into 
the receptacle, which is free, included cylindrical or globose at the apex and bears sessile or subsessile lenticular or turbinate spore cases. 
Veins dichotomously branched, simple and costa-like in the ultimate segments, or simple parallel from a central costa in undivided 
fronds ; venules free. 
Fronds simple or decompoundly divided, pellucid membranaceous. Rhizome creeping, usually filiform. Well distinguished 
from the last genus in the involucres consisting of 2 valves, instead of being blended into a cup. (Moore.) 
1. Hymenophyllum exsertum, (Wall.)— Flexile pendent, fronds oblong, elongate, acuminate, pinnated, pinnae rather distant, 
lanceolate acuminate decurrent, especially the upper ones pinnatifid but not deeply, segments short linear-oblong, obtuse, entire simple or 
bifid, involucres on the upper side of the pinnte solitary or 2-3 sessile or terminating short segments, ovate 2 valved almost to the base, com- 
pressed, the valves eroso-serrate or nearly entire, rachis, stipes and costa more or less crinite with long scattered rufous hair.s. Hook. 
Sp. FiL i, 109. Wall. Cat. 7i. 171. Hymenophyllum densum. Wall Cat. 7i. 170. 
Common on trees and moist rocks on the higher ranges of the Nilgiris, Anamallays and Pulnies. 
PLATE No. IX. 
I have another species of Hymenophyllum (H, badium ?) and also another species of Trichomanes ( T, Schmidianum f ) which 
I shall have figured in a f uture numher of this tvork. 
TRIBE I. (§ 17) CYSTOPTERID^. 
AcROPHORUS, Presl. Tent. Pterid., 93. 
(Leucostegia, PresL ; Odontoloma, J. Sm. ? Monachosoram, Kunze. 
Sori indusiate, globose, superficial or immersed ; the receptacles terminal (or rarely axillary in the forks of the venules,) indusiura 
sub orbicular, affixed by its posterior margin or ba.se, rarely two or three becoming confluent. Veins pinnato furcate from a costa or more 
rarely repeatedly dichotomous, venules free. 
Fronds membranaceo-herbaceous or sub coriaceous, pinnate or more frequently decompound, the divisions isomerous or dimidiate 
— Rhizome creeping. (This group is separated from Davallieae by having its indusium fixed only by its base). [Moore.] 
Acrophorus pulcher, (Moore) — Caudex creeping, stout clothed with compact imbricated very broad and obtuse scales, fronds rather 
small (1 — 2 feet), ovate acuminate membranaceous flaccid generally pale green 3 — 4 pinnate, rachides winged, primary pinnae oblong ovate 
acuminate, secondary and tertiary ones ovate obtuse, pinnules lanceolate, deeply pinnatifid with linear lanceolate falcate segments entire 
or with an inner tooth, involucres on the middle of the segment below the sinus of the tooth and at the axil of a pair of veinlets, reni- 
form rather large, stipes a little scaly below and ri.sing from a very scaly gemma, all the scales oval obtuse. Hook. Sp. FiL i, 157. JJavalli.a 
