92 9. TRICHOMANES. § 2. EUTRICHOMANES d. PTILOPHYU.UM. 



g. Fronds 2%—10 c.M. long. Stipes i%-^ 

 C.M. long. (24) T. bipunctatom. 



g.g. Fronds smaller. Stipes short or nearly wan- 

 ling. (25) T. filicaloides. 

 f.f. Submarginal spurious vein copiously interrupted^ i 

 Lips of the indusium semiorbicular. 



(26) T. capillatum. 

 c.c. Submarginal spurious vein wanting. 



1. Segments with the margin serrate or dentate. 



* Fronds small. 



(27) T. serrulatum 



*• Fronds large or middle-sized. 



(28) T. auriculatum. 

 ±.±. Segments with the margin entire. 



S. Surfaces or edges hairy^ ciliate or fibrillose. 

 $. Edges ciliate with short, distant bristles. 



(29) T. dichotomum. 

 S.$. Surfaces hairy, especially on the costae, 



(30) T. vestitum. 

 S.S. Surfaces and edges naked. 

 3. Stipes + tufted. 



•{•. Fronds at best 2-pinnati/id. 



:)/:. Fronds to + i5 c.M. long. 



(31) T. Warburgii. 

 ■^.if.. Fronds to + 30 c.M. long. 



(32) T. ignobile. 

 f.f. Fronds 4-pinnatipd. (33) T. bispidulum. 



3.3. Stipes scattered to closely seriate. 



S:. Fronds small, under 15 c.M. long. 



S. Fronds S'pinnatifid. (34) T. LauterbachiL 

 S.S. Fronds 3-pinnatifid, at least at the base. 

 6. Indusium with the mouth 2-valved. 



(35) T. Hosei. 

 S.6. Indusium with the mouth not or 

 scarcely 2^alved. 



7. Fronds small, — ± .^ p. M Ir^ 

 •ih iO m.M. broad. '^'^■^ 

 pUc^cSC^^ . (36) T. gracile 



