402 • 60. ACROSTICIIUM. 



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

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

 Ij 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.— ^X". 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 in. br., the point acute, the 

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

 except that the lower part of tlie 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. Sp. 5. p. 213. 



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

 texture, long narrow frond, and distant veins. An authentic specimen of 4. brachyneic- 

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



15. A. Herminieri, Bory ; rhizome stout, woody, s"hort-creeping, the scales 

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

 fr. 1^-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-li in. hv.—Hk. Sp. 5. p. 216. 



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

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



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

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

 6-13 in. 1., 2-3 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. luridum. Fee ; 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., 

 oljlong-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 fiat or 

 slightly inflexed. — A. Schomburgkii, Hk. Sp. h. p. 200. {vi part) <& Griseb. nan 

 Fee. 



