i-i. KEPIIRODIUM, LASTREA. 263 



20. N. (Last.) attenuatum, Baker; sf. 1 ft. or more 1., firm, glossy, naked ; 

 fr. 3-4 ft. 1., 2 ft., br. ; pinnae 9-12 in. 1., |- in. br., very acuminate at the point, 

 the edge cut three-quarters of the way down into entire, spreading, blunt lobes 

 ] lin. br., the basal lobes much reduced, lower pinnae slightly stalked ; texture 

 subcoriaceous ; rachis naked ; under surface glandular ; veinlets 12-16 on a 

 side ; sori in a close row near the midrib. Lastrea, J. Sm. (not Brack.). 



Hab. Philippines, 'Cuming, 327. Habit of Didymochlcena polycarpa. 



21. N. (Last.) abruptum, Baker ; st. 1| ft. 1., angular, slightly villose above ; 

 fr. 2-3 ft. 1., 1 ft. or more br. ; pinnce 6-8 in. 1., 1 in. br., cut down to a broadly- 

 winged rachis into close, acute, falcate, entire lobes ^ in. br., the basal lobes 

 rather reduced, and the pinnae on the upper side cut off in a slight curve ; texture 

 subcoriaceous, rigid ; rachis and both surfaces nearly naked ; veinlets prominent, 

 12-16 on a side, with the sori near the apex. Aspid". Kze. Mett. (non JBlume). 



Hab. Peru. General habit and texture of N. invisum. 



22. N. (Last.) Sloanei, Baker ; rhizome stout, wide-creeping, scaly ; st. 1-2 ft. 

 1., smooth ; fr. 3-4 ft. L, 1-2 ft. br. ; pinnce 6-12 in. 1., J-f in. br., cut down 

 nearly to the rachis into entire, linear-subfalcate lobes 1 lin. br., the basal ones 

 the largest ; texture subcoriaceous, rigid ; rachis and under surface naked or 

 finely villose; veinlets 10-1 5 on a side, with the sori midway between the edge 

 and midrib. Polyp, invisum, Sw. non Forst. N. macrourum and Serra, Hk. 

 Sp. 4. p. 96-8. 



Hab. Mexico and Cuba, southward to Brazil and Peru. A larger and more rigid 

 plant than JV. patens, with narrower and more acute lobeB, and closer and more pro- 

 minent veinlets. 



23. N. (Last.) immersum, Hk. ; st. tufted, 2 ft. 1., or more, naked, sub- 

 stramineous ; fr. 3-4 ft. ]., 1-2 ft. br. ; pinnce often 1 ft. L, 1-1 Jin. br., cut 

 down very nearly to the rac-his into spreading linear lobes 1 lin. br., with more 

 than their own space between them; fe^re^papyraceo-herbaceous; rachis and 

 under surface naked or slightly pubescent and glandular ; veinlets 10-20 on a 

 side ; sori submarginal, immersed so as to project on the upper surface; invol. 

 subpeltate. Hk. Sp. 4. p. 112. 



Hab. Assam, Philippines, Malaccas, N. Caledonia. Perhaps the involucre would 

 justify our placing this in Aspidium, bu.t in other respects it comes near the following 

 four species. L. caudiculata, Presl, is said to differ from this by its medial sori. 



24. N. (Last.) SpeJcei, Baker; st. 1 ft. L, stramineous, slender, fibrillose ; fr. 

 18-24 in. 1., 9-12 in. br. ; pinnce 4-6 in. 1., 1 in. br., cut down very nearly to 

 the rachis, entire, those of the fertile frond 1 lin. br., those of the barren frond 

 wider; texture papyraceo-herbaceous; main rachis and that of the pinnee slightly 

 fibrillose ; under side naked ; veinlets 8-12 on a side ; sori midway between the 

 edge and midrib; invol. subpeltate. 



Hab. Johanna Island, Capt. Sptlce, Dr. Kirk; Angola, Welwitzsch. This comes near 

 the last, but the texture is thinner, the veinlets ,re fewer, and the sori medial, and not 

 immersed. A plant fiom the Cameroon Mouutains differs only by its more scaly 



rachises. 



25. N. (Last.) cirrJiosum, Baker ; st. 9-12 in. L, tufted, slender, glanduloso- 

 pilose, and fibrillose, especially below ; st. 1 ft. 1., 6 in. br. ; pinnce spreading, 

 3 in. 1., ff-f in. br., cut down very nearly to the rachis into linear-oblong entire 

 lobes in. br. ; texture herbaceous ; rachis fibrillose and viscose, and midrib 

 beneath slightly so ; veinlets 5-6 on each side, with the sori nearly terminal. 

 Aspidium, Schum. and Thonn. N. crinibulbon, Hk. Sp. 4. p. 92. t. 244. 



