a. TRICHOMAHES. ^ 2. EUTRICHOMANES. C. GONOCOHMUS. 89 



from the outer edge in the direction of the base into narrow, irregular seg- 

 ments. Veins close, prominent (so that the frond when dry appears channefed), 

 dichotomous at a very small angle; spurious venules numerous. Sori 4—6, 

 terminal on the central segments; indusium sunk, the mouth dilated at the sides. 

 Trop. ^ temp. Asia, Australia. Polynesia, East African Islands. 



(11) T. nanum, v. n. b., Hk. Bk., Syn. Fil., 77; T. Kurzii, Bedd., 

 Ferns. Br.I., II, tab. GCLXXXVI; C. Chr., Ind. Fil. 



Rhizome slender, wide-creeping. Stipes very short. Fronds not more 

 than I'/a cM. each way, cuneate below, the outer margin rounded; central 

 portion not more than I'/j cM. broad, divisions simple or once branched. 

 -Ultimate segments 3'/,— S m.M. long and ± '/^ m.M. broad. Texture thick 

 but not rigid; surface somewhat undulate, margin bounded by a thickened 

 line; a central vein only in each segment. Sori 1—2 to a frond, subterminal; 

 indusium turbinate, not at all exserted, the mouth dilated, undulated in irregular 

 plications. 



Trop. Asia. 



* (12) T. rupicolum, Koc., Flor. Btz., I, 24. 



Rhizome creeping, densely covered with spreading hairs. Stipes filiform, 

 1 — 3 c.M. long, nearly naked. Fronds commonly cuneate-flabellate, ± 1 c.M. 

 each way, the base cuneate or slightly rounded, the outer edge palmatifid 

 into 3 — S segments; central segments 1 — 2 X forked, the lateral ones simple 

 or bifid; ultimate lobes + 2 m.M. broad, the apex blunt, the edge entire and 

 with a submarginal, interrupted spurious vein. Texture thin, hyaline ; veins 1 in 

 each ultimate lobe, sparingly covered with short, acute scales. Sori terminal and 

 solitary on the lobes; indusium funnel-shaped, sunk, the mouth dilated, spreading. 



Java. 



(13) T. digitatum, Su>., Hk. Bk., Syn. Fil., 76; T. flabellatum, V. 

 D. B., Hymen. Jav., 19, tab. XHI; T. corlicola, Bedd., Ferns S. I., tab. CCLXIV. 



Rhizome slender, creeping, nearly naked, intricate. Stipes scattered, 

 % — 2 c.M. long, capillary, naked. Fronds 1 — 5 c.M. long, 1 — 2 '/a c.M. broad, 

 irregular in general outline, 3-partite, the central portion produced, 3-fid or 

 1 — 3-furcate, the lateral segments shorter, simple or 2-fid. Ultimate segments 

 linear, to 1 m.M. broad or hardly broader, the apex retuse or forked, the 

 margin ciliate. Texture membranaceous, opaque, brownish; surfaces naked; 

 veins 1 in each ultimate segment. Sori 2 — 6, terminal and solitary on the 



