22. DRYOPTERIS. § 1, LASTREA. 153 



side in the largest segments. Sori rather medial; indusia deciduously 

 short-hairy, horse-shoe-shaped or reniform, or even (apparently?) peltate, 

 the higher sometimes very small and hamate or short-oblong. -- By its 

 indusia apparently an Athyrium, in other respects a Dryopteris. 

 Celebes. 



(18) D. viiscosa, O.KUe. 



Costae, costulae and veins pubescent on both sides with rather firm, 

 pale-grey hairs ; only the under surface provided with yellow, globose glands. 



(18ffl) ■>. suliviscusa. v. A. v. R., in Bull. Btz., 1915, XX, 14; 

 Nephrodium viscosum, Bk., p. p., in Journ. of Bot., XVIII, 212. 



Stipes tufted, + 20 cm. long, castaneous, finely villose with very 

 short, curved, adpressed, ferrugieous or pale-brown hairs and provided 

 with brown, lanceolate-subulate scales. Fronds lanceolate-oblong, + 

 25—30 cm. long, + 10—12 cm. broad, acuminate. Pinnae + 22 on a 

 side, the higher ascending, the central horizontal, the lower deflexed; 

 lower and central pinnae largest, sessile, lanceolate, + 5 — 6 cm. long, 

 + 1 — I'j., cm. broad, acuminate, cut down nearly to the costa into 

 linear-oblong, obtuse, subrepando-crenate, ciliate segments separated by 

 bluntish sinuses. Texture firm-herbaceous; rachis and costae densely 

 hairy above; costulae and veins slightly so, glabrescent, the hairs 

 spreading, ferrugineous or pale-brown; both surfaces and especially the 

 costae beneath copiously purveyed with yellow, subglobose glands; veins 

 + 6 on a side, simple. Sori medial; indusium persistent, brown, finely 

 glandular. 



Simiatra. 



(19) D. gracilescens, o. Ktxe.s Athyrium bengiietense, Christ, 

 Copel., in Phihpp. .Journ., IIF, 300; — var. calva; D. calm, Copel., in 

 Leafl., Ill, 808; G. Chr., Ind. Fil., Suppl. 



War. calva: Sori nearer the costulae than the margin. — Mindanao. 



(19a) D, paueisora, Copel., in Philipp. Journ., VF, 186. 



Stipes aggregate, 8 —6 cm. long, clothed like the rachis with narrow, 

 crinite, brovra, horizontal scales intermixed with very minute others. 

 Fronds lanceolate-ovate, + 12 cm. long and 8 — 4 cm. broad. Pinnae 

 subsessile, oblong, rounded at the apex, cut down nearly to the costa into 



