606. DICTYOPTEUIS. § 1. ARCTPTERIS. S21 



War. eu-irregularis : Fronds simply pinnate; sori small and very 



rous. 



Malaya; — var. eu-irregularis : Philippines. 



$ ± DIGRAMMARIA. 



[19) D. ambigna., v. A. «. jr.,- Digrammaria ambigua, Pr., Tent, 

 i., 117, tab. IV, fig. 12; Phegopteris philippinensis, Mett., var. d, Mett., 

 ',., rV, Phegop. & Aspid., 27; Stenosemia aurita, J. Sm. (not Pr.), Bau. 

 k., Gen. Fil., tab. XCIV, fig. 1 — 4; Aspidium ambiguum. Diets, Copel., 

 od. Philipp , 39 ; C. Chr., Ind. Fil. ; Teclaria ambigua, Copel., Philipp. 

 [., II, 41b, p. p.; Gymnogramme ambigua, Hk, Hk., Bk., Syn. Fil., 378. 

 Stipes slender, nearly naked. Fronds 4B — 60 c.M. long, ± 30 c.M. broad, 

 g-deltoid, 2-pinnatifid. Pinnae lanceolate, 2'/j — 4 c.M. broad, the lower 

 slightly stalked, cut Vj'^^y down to the costa or more into linear-oblong 

 the fertile lobes contracted. Texture thinly herbaceous;, colour dark- 

 ; rachis and both surfaces thinly clothed with long, jointed hairs; veins 

 3 lobes often forked, the lower ones forming costal areolae. Sori oblong, 

 e, or confluent when the veins fork. 

 Philippines. 



01. I>IE»TEIfcIS, neinuswu-at. 



5ori punctiform or round, on the back of united veinlets. Indusium 



Ihizome creeping. Stipes scattered, not articulate to the rhizome. Fronds 

 ato-dichotomous, i.e. divided nearly or quite to the base ^ 2 halfs, each // ^"^^ 

 once or more times dichotomously divided again with radiating lobes, 

 iry ribs radiating, dichotomous; secondary ribs (if present) + parallel to 

 irimary ones; veins anastomosing copiously. Diels, in Engl, k Prant. 

 M.Fam., I*, fig. 108. 

 Tropical Asia and Polynesia. 



hri, in i row on each side of the costae. (1) D. Lobbiana 



Jon scattered irregularly. 



