﻿9. TRICHOMANES. 85 



$ 2. EUTRICHOMANES. b. Hemii»hlebium. 



«. Veins flabellale or radiate. Fronds small, 5 — i5 m.M. long. 



h. Fronds peltate; veins radiate. (1) T. peltatum. 



h.h. Fronds not peltate; veins flahellate. 

 c. Fronds cordate-orbicular. 



d. Indusium funnel-shaped, the mouth entire. (2) T. Motleyi. 

 d.d. Indusium suhcylindrical, the mouth 2-lipped. (3) T. pannosum. 

 c.c. Fronds oblong or linear-oblong. (4) T. Beccarianum. 



a.a. Veins pinniform. Fronds i — T^]^ c.M. long. 



>!<• Fronds small, + i — ^^2 ^•^- ^ong, ± J^'/j — 5 m.M. broad. Indusium 

 with the mouth conspicuously 2-lipped. (S) T. bimarginatum. 



*.;tc. Fronds larger, ± d% — 7 '/a c.M. long, ± i — 2 c.M. broad. In- 

 dusium with the mouth not or obscurely 2-lipped. (6) T. sublimbatum. 



* (1) T. peUatum, BU., Hk. Bk., Syn. Pil., 73; Journ. of Linn. 

 Soc, Bot., IX, tab. VIII, C; T. omphalodes, C. Chr., Ind. Fil. 



Bhizome wiry, slender, wide-creeping, tomentose. Fronds quite sessile, 

 attached to the rhizome near its centre or towards the base, suborbicular in 

 general outline, 1 — 3 c.M. each way, the margin undulate, not thickened, 

 sometimes irregularly, more or less deeply cleft. Texture delicately membra- 

 naceous; veins close, radiant, regularly dichotomous, with numerous interrupted, 

 spurious venules between them near the margin and towards the centre, 

 Sori 1-3, scattered; indusium more or less exserted, with a much dilated, 

 spreading, slightly toothed, 2-lipped mouth. 



Trop. Asia, Polynesia 4" Australia, Liu-Kiu. 



* (2) T. llotleyi, r. jo. jr., Hk. Bk., Syn. Fil., 73; T. Ilenzaiense, 

 Bedd., Ferns Br.I., II, tab. CLXXXIII; Microgonium Motleyi, V. D. B., Hymen. 

 Jav., tab. I. 



Rhizome filiform. Fronds copious, sessile, + 6 m.M. long, ± 4 m.M. 

 broad, cordate-orbicular, nearly entire. Texture very thin; barren fronds 

 without costa; veins flabellate, with spurious veins; fertile fronds with a dis- 

 tinct costa terminating in a ± deep sinus, the edge with a marginal vein 

 bordering the frond, slightly denticulate or entire. Sorus terminal on the 

 costa, stalked; indusium funnel-shaped, the mouth entire, much dilated. 



Trop. Asia, Queensland, Melanesia. 



