CD 

 02 



4Ba. tTERis. 33S 



5 branches clustered at the apex of the stipe, the lateral 

 branches often nearly as long and similarly 2-pinnatifid as 

 the central one, not rarely forked near the base with more 

 or less divided secondary branches. § 1, c**. PartMae. 

 a.a. Veins free except that the central ribs (costulae) of the ultimate seg- 

 ments are more or less connected at the very base by, arching veins 

 forming 1 single row of costal areolae on each side. § 2. CAMPTERIA. 

 a.a.a. Veins anastomosing more copiously than in u.a. § 3. LITOBROCHIA- 



§ 1. EUPTERIS. a. Pinnatifidae. 



* (1) Vt. redueta, BU., Journ. of Bot., XVIII, 211; Pl.,bmurita,L., 

 var., C. Chr., Ind. Fil. 



Stipes tufted, 1 5 — 25 c.M. long, erect, naked, the base often dark-coloured 



and slightly scaly. Fronds 25 — 35 c.M. long, 5 — 7 c.M. broad, linear-lanceo- 



v4 late, cut down in the upper part nearly, in the lower nearly or quite to the 



fl costa into 30 — 40 pairs of crowded, linear lobes below the caudate apex. Lobes 



(D 



S ± close or slightly imbricate, rather spreading, subfalcate, 6 — 9 m.M. broad, 



g the apex bluntly rounded, entire or slightly crenate, the edges parallel, entire, 



m the lower lobes hardly shorter than the others. Texture firm; costules and 



veins prominent, the latter simple or forked r surfaces naked. Sori not reaching 

 the apex of the lobes, often (but not always) extending to the top of the 

 sinuses; indusium naiTow. 

 Sumatra. 



§ 1. EUPTERIS. b. Pinuatac. 



a. Fronds dimorphous. Lowest barren pinnae simple, lowest fertile ones often 

 contracted, mostly forked orpimiatifid on the upper side only. (2) Pt. rangiferina 

 a.am Fronds uniform. Lowest pinnae simple or 2 — 3-furcaie, the fertile ones 

 sometimes contracted, not divided as in a, 

 h. Pinnae cordate, truncate or rounded at the hose. 

 •{•. Veins close; lower pinnae + sessile. 



:)(., Lowest prnnae ± largest. Rachis reddish or purpureous, 

 deciduously villose. (3) Pt. orientalis. 



FiLiCES. 23 



