138 NEPHIIODIUM, § LASTREA. 



131. N. (Lastrea) latifrons, Hook. ; caudex?, stipes a span 

 and probably much more long deciduously scaly, fronds 2-3 

 feet long firni-membranaceous dark-brown when dry, beneath 

 minutely glandular, ovate pinnate upwards bipirniate below, 

 lower primary pinnce petiolate a span to a foot long lowest ]iair 

 semiovate, pinnce above sessile oblong moderately acuminate 

 deeply pinnatiiid, segments oblong subfalcate, pinnules of the 

 inferior primary pinnee H-3 inches long sessile their bases 

 often decurrent and as well as the pinnules oblong ])innatifid, 

 veinlets simple or forked, sori submarginal, involucres large 

 membranaceous entire, rachis and costcB beneath pubescent 

 and jialeaceous with soft ferruginous lanceolate scales. — 

 Aspidium, Brack. Fil. U. S. Expl. Exp. p. 196. 



Hab. Oabu, Sandwich Islands, Brackenridge (high mountains behind Hono- 

 hilu), Douglas, Seemann. — Readily distinguisUed by the large size of its pinnules 

 and of the lobes of the pinnae. 



132. N. (Lastrea) Mexicanum, Hook. ; caudex a short 

 thick erect rhizome densely clothed with soft ferruginous 

 linear-lanceolate scales, stij)ites tufted a span to 1-1^ foot 

 long stramineous laxly scaly at the base, fronds subcoriaceo- 

 membranaceous pale-gveen glabrous a span to 1-1 ^ foot long 

 broad oblong-lanceolate acuminate hi- below tripinnate, pri- 

 mary pinnae petioled rather distant from an obliquely cuneate 

 base broad-lanceolate their upper half pinnatiiid pinnate to- 

 wards the base the lowermost mostly bipinnate towards their 

 base, segments and pinnules obliquely obovate or rhomljoid 

 subacuminate or oblong obtuse often spathulate entire or 

 more or less deeply pinnatifid subauricled the base tapering 

 and more or less decurrent and confluent, veinlets once or 

 twice forked, sori few distant small rather nearer the margin 

 than to the costse, involucre when young a white orbicular 

 membrane with a brown spot in the centre when older more 

 coriaceous reniform or subhippocrepiform. (Tab. CCLXVII.) 

 — Pr. Reliq. Hank. i. p. 38. Kze. in Linncea, xiii. p. 37- 

 Metten. Aspid. p. 64. Lastrea, Pr. Aspid. paupertinum, 

 Roem. Kze. in Linnaa, xviii. p. 341. Lastrea, Liebni. Fil. 

 Mex. p. 120. Polypodium angustifrons ?, Kze. in Linncea, xiii. 

 p. 134. Aspid. leptorachis, Kze. in Linncea, xviii. p. 341. 

 Lastrea, Lichm. Fil. Max. p. 120. 



Ilab. Me\\co, ficenke, Liebmann (L. leptorachis, Liebm. inHerb. nostr.), Seemann. 

 Realejo. Beecheg. Andes of Ecuador, Spruce, n. 5292. Venezuela, Fendler, n. 

 168, 169. New Granada, Schlim, n. 54,622. Panama, Seemann, Sutton Ilages, 

 n, 577. Jamaica, Purdie, Wilson. — A very variable species in the form and di- 



