324 60b. DIOTYOPTEHIS. § 2. DIGRAMMABIA. 



dilated on the upper side at the base; lower pinnae a little abbreviated, 

 petiolulate. Lobes oblique, linear, falcate, blunt, entire or repando-crenate, 

 separated by rounded sinuses. Texture membranaceo-herbaceous ; surfaces 

 naked; upper surface oUve-green, lower paler; costae and costulae sub- 

 flexuose, the former a little tomentose above; veins immersed. Sori 

 oblong, in 1 row on each side of and approximate to the costulae, to 

 10 in a row on the longest lobes. 

 New Guinea. 



(21) 1>. elliptica, ». A. V. JR.} Tectaria elUptica, Copel, in Philipp. 

 Journ., IXC, 228. 



Stipes ± 50 cm. long, dirty-black-brown, provided towards the base 

 with a few scattered lanceolate scales. Fronds more than 50 cm. long, 

 35 — 40 cm. broad, 2-pinnatifid, abruptly acuminate. ' Pinnae + 5 — 8 on 

 each side below the pinnatifld apex, sessile or the higher adnata, the 

 lowest the shortest and broadest; central pinnae longest, to 25 cm. long, 

 + 6 cm. broad, much acuminated, deeply lobed, minutely ciliated in the 

 sinuses. Lobes falcate, + 5—8 mm. broad, entire. Texture herbaceous; 

 surfaces naked; veins indistinct, anastomosing so as to form 1 — 2 rows 

 of areolae on each side of the costulae, otherwise free. Sori medial, 

 more or less elongated. 



S7i7natra. 



eS. COIVIOOR^^MMA, Fie. 



(2) C. siibcordata, Copeh, in Leafl., Ill, 823. 



Fronds 2-pinnate. Pinnulae membranaceous, serrate, the apex shortly 

 caudate, coarsely serrate, the base cordate or rotundate-subtruncate. — 

 Near C. fraxinea Biels var. serrulata. 



Mindanao. 



Sori linear or linear-oblong, simple or forked, terminal or subterminal 

 on the veins, without paraphyses. No indusium. 



