y. TRICHOMANES. 8B 



§ 2. EUTRICHOMANES. b. Hemiphlebium. 



a. Venation flabellate or radiate. 



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



h.b. Fronds not peltate; veins flabellate. 

 c. Fronds cordate-orbicular. 



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

 d.d. Indusium subcylindrical, the mouth 2-lipped. (5) T. pannosum. 



cc. Fronds oblong or linear-oblong. _ (4) T. Beccarianum. 



«.«. Venation pinnate. 



*. Fronds small, \to ± l^j^ c.M. long, \ to ± 7^1^ m..M. broad. Indusium 

 with the mouth conspicuously 2-lipped. (5) T. bimarginatum. 



*.;i<. Fronds larger, ± I*/^ — 7% c.M. long, + 1—2 c.M. broad. In- 

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



* (1) T. peltatum, an., Hk. Bk., Syn. Fil., 73; Journ. of Linn. 

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



Rhizome 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. 

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

 spreading, slightly toothed, 2-lipped mouth. 



Trap. Asia, Polynesia ^ Australia, Liu-Kiu. 



* (2) T. Motleyi, r. 1>. B., Hk. Bk., Syn. Fil., 75; T . Hensaimsoi 

 Bcdd., Forns Br . L, II , tab , CLYXXIIl! Microgonium Motleyi, V. D. B., Hymen. 

 Jav., tab. I. (See Supplemeut 1, App^ndix^ 



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. 



