160 22. DRYOPTEEIS. § 1. LASTREA. 



lanceolate, entire. Stipes subtufted, ± 6 cm." long, shortly tomentose; 

 as is the rachis, the tomentum intermixed with longer, whitish, subulate 

 hairs and ferrugineous scales. Fronds elongate-oblong, + 12 cm. long 

 by 4 cm. broad, deeply 2-pinnatifid, acuminate. Pinnae + 16 on a side 

 below the pinnatiiid apex, spreading, approximate, sessile, hnear-ligulate, 

 obtuse; central pinnae largest, ± 2'|^ cm. long by % cm. broad; lower 

 pinnae often deflexed; 2 — 3 lowest reduced to mere auricles. Lobes 

 oblong, suboblique, to 3 mm. long by 1', — 2 mm. broad, acute. Texture 

 thin-herbaceous; upper surface strigose with short, whitish, adpressed 

 hairs; costae and veins provided with longer, whitish, spreading hairs; 

 veins + 5 on a side, simple. Sori numerous, nearer the margin than 

 the costulae; indusium brown, sparingly hairy, deciduous. 

 Neio Guinea. 



(30j D. atlnata, v. A. v. n. 



The specimens gathered by Raciborski have the fronds above partly 

 sparingly fibiilloso-paleaceous partly naked (glabrescent), the lobes here 

 and there bluntish. — See Copeland's information in Philipp. Journ , 

 VIIF, 140. 



(31fl) D. jsubsagenioides. t>. A. k. «., in Bull. Btz., i9i5, XI, 9. 



Near D. sagenioides 0. Ktze but: PJiizome short-creeping; stipes not 

 tufted, grey when dry; pinnae more numerous, often 11 — 15 on a side, 

 1 — 4 cm. broad, coriaceous, when dry often blackish above, grey beneath, 

 the edge cut '/j — ^s-way down to the costa, the lobes serrate-crenate 

 towards the apex, and the tips of the sinuses provided with a single 

 produced tooth, the lowest pinnae with the 1 — 3 lower posterior lobes 

 elongated and lobed. 



Borneo, 



(316) i>. theljptcris, A. Gray, C. Chr., Ind, Fil. ; Nephrodiimi 

 Thelypteris, Streynp. (not Desv.), Hk. Bk., Syn. Fil., 271; Lastrea 

 Thelypteris, Bory, Bedd., Handb. Ind. Ferns, 241 ; Ferns Br.L, I, tab. 

 XLIV; Aspidimn thelypteris^ Sic, Christ, Farnkr. d. Erde, 253; ^cros^icfefm 

 Thelypteris, L., (oldest name). 



Rhizome slender, wide-creeping. Stipes up to about 30 cm. long, 

 slender, stramineous. Fronds lanceolate-triangular, 30—60 cm. long, 

 10 — 15 cm. broad, truncate at the base. Pinnae spreading, the lower 



mmigemjSftam^ 



