34. DAVAILIA. § 1. SCVPHOUBIA. 297 



(.1) O. triphylla, nu., Hk. Bk., Syn. Fil., 94; Hk., Spec. Fil., I, 

 tab. XLVI, A; Bedd., Ferns Br.I., I, tab. CV. 



Rhizome creeping, stout, densely clothed with chaffy scales. Stipes scat- 

 tered, 5—10 c.M long, erect, strong. Fronds ternate. Central segment linear, 

 10—15 c.M. long, 1 — 2 c.M. broad, obtuse, entire, the very base cuneate, 

 short-stalked, lateral segments similar but shorter, sessile, oblique at the base. 

 Texture coriaceous; veins copious, crovifded, parallel, forked, flat. Sori placed 

 in a close row along the margin; indusia semicylindrical, compressed, conti- 

 guous so as to form an uninterrupted marginal line along whole the length 

 of the leaflets. 



Malacca. 



* (2) D. pentaphylla, JW., Rac, Flor. Biz., I, 133; Diels, in Engl. 

 & Prantl, Nat. Pfl.Pam,, P, fig. 115, .1; Christ, Farnkr. d. Erde, \vji. 947; 

 Hk., Fil. Exot., tab. XXXVII. 



Rhizome wide-creeping, the scales dense, rounded, adpressed, peltate at 

 the base, the long, hair-like point spreading. Stipes scattered, strong, erect, 

 5 — 10 c.M. long. Fronds with 2 — f pairs of lateral pinnae and a terminal p^ 

 one. Terminal segment 4 — 15 c.lVI. long, 1 — 2 c.M, broad, of the barren 

 frond" the broadest and shortest, stalked, linear, bluntisli, the base cuneate, 

 the edge more or less crenate or serrulate, lateral segments similar, but com- 

 monly shorter, sometimes sessile, the lowest pair sometimes with 1 — 2 similar, 

 smaller pinnulae at the base. Texture coriaceous; veins close, forked, parallel, 

 flat. Sori close, numerous, in rows along the margin ; indusia semicylindrical, 

 often contiguous. 



§ 2. COLPOSORIA. 



Rhizome scaks with a small, nmndish or oblony, peltate base, the apex sud- 

 denly narrowed into a very long, hair-like point, fiachis and surfaces hairy 

 or fibrillose, (Davallodes). (3) D. hirsuta. 



Rhizome scales otherwise. Rachis and surfaces naked or + scaly. (Eu- 

 davallia). 

 h. Veins with a terminal, calcareous scale on the upper surface of the 



frond. ' (4) D. Korthalsii. 



h.b. Upper surface without calcareous scales. 



c. Indusium + as broad as long or broader. 



