402 60. ACROSTICHUM. 



12. A. Schlimense, Fee ; rhizome thick, woody, wide-scandent, the scales broad, 

 ovate, dull-brown ; St. 4-8 in. l.,firm, erect, slightly scaly ; barren fr. 9-12 in. 1., 

 ] j in. br., the point bluntish, the lower third narrowed very gradually ; texture 

 subcoriaceous ; both sides naked, the edge narrow, cartilaginous, quite distinct 

 from the frond ; veins fine, very close, usually once forked ; fertile fr. similar to 

 the barren one. Hk. Sp. 5. p. 202. 



Hab. N. Granada, Schlim, 622 ; Ecuador, Spruce. Resembles flaccidum in texture, 

 but the fronds are much less narrowed in the upper part, and distinctly stalked. 



13. A. palustre, Hk. ; rhizome wide-creeping, not thick but woody, the scales 

 long, linear, bright-brown ; St. 1-2 in. 1., firm, clothed with linear scales ; barren 

 fr. often 1 ft. 1., 1-2 in. br., the point acute, the lower part narrowed very gra- 

 dually ; texture herbaceous ; both sides naked ; veins raised, close, simple or 

 once forked ; fertile fr. (in all our specimens) soriferous only in the upper part, 

 much narrower than the others. Hk. Sp. 5. p. 214. 



Hab. Guinea Coast ; gathered by Barter and Mann. Distinguished by its herbaceous 

 texture and very prominent veins. A plant collected in Berbice by Schomburgk is 

 perhaps the same, but our specimens are barren only. 



14. A. stenopteris, Klotzsch ; rhizome woody, the scales small, ovate, dull- 

 brown ; st. scarcely any ; barren fr. 12-18 in. 1., J-f in. br., the point acute, the 

 lower part narrowed very gradually ; texture papyraceous ; both sides naked, 

 except that the lower part of the midrib beneath has a few small dark-brown 

 linear scales ; veins fine, simple or forked, often 1 line apart, falling short of 

 the edge ; fertile fr. narrower, and on a longer stem than the barren one. 

 Hk. 8p.5.p.2I3. 



Hab. Columbia, Moritz, 234 ; Venezuela, Fendler, 282. Distinguished by its thin 

 texture, long narrow frond, and distant veins. An authentic specimen of A. brachyneu- 

 ron, Fee, from Guadeloupe, is smaller in size, but does not otherwise differ. 



15. A. Herminieri, Bory ; rhizome stout, woody, short-creeping, the scales 

 dense, linear, reddish-brown, -1 in. 1. ; st. tufted, Very short or none ; barren 

 fr. l|-3 ft. 1., 1-1 in. br., the point acuminate, the lower part narrowed very 

 gradually ; texture coriaceous ; both sides naked, the upper one with a metallic 

 gloss ; veins immersed, indistinct, usually once forked ; fertile fr. short-stalked, 

 3-4 in. 1., 1-1^ in. br. Hk. Sp. 5. p. 216. 



Hab. Cuba to Brazil. Distinguished by its very large sword-shaped barren fronds of 

 coriaceous texture, a striking contrast to its small subsessile oblong fertile ones. 



16. A. Lingua, Raddi ; rhizome firm, wide-creeping, the scales small, ovate, 

 dark-brown ; ,9^. 6-12 in. 1., stramineous, firm, erect, nearly naked ; barren fr. 

 6-9 in. 1., 23 in. br., the point acute, the base narrowed suddenly ; texture cori- 

 aceous ; both sides nearly naked, the edge thickened ; veins subparallel, simple 

 or once forked ; fertile fr. much narrower than the barren one. A. latifolium, 

 Hk. Sp. 5. p. 202 (in part}. 



Hab. West Indies to Brazil and Peru. Differs from latifolium in the rhizome, scales, 

 and shape of the frond. We cannot distinguish from this an authenticated specimen of 

 A. scandens, Fee, though a plant from Linden (74) is thinner in texture, with finer veins 

 and a satiny gloss. 



17. A. luridwn, Fe'e ; rhizome woody, the scales linear, dark-brown, crisped ; 

 st. of barren frond 1-2 in., of the fertile 3-4 in. 1. ; fr. 6-12 in. 1., 2-3 in. br., 

 oblong-spathulate, blunt or subacute, the edge thickened and slightly scaly, the 

 haft narrowed very gradually into the stem ; texture very coriaceous ; both sides 

 nearly naked ; veins subparallel, usually once forked ; edge of fertile frond flat or 

 slightly inflexed. A. Scliomburgkii, Hk. Sp. 5. p. 200. (in part) <& Griseb. non 

 Fee. 



