522 ACROSTICHUM. 



in. 1., |-| in. br., narrowed gradually to both ends, with a stramineous minutely- 

 furfuraceous st. nearly as long as itself ; texture thin but firm ; upper surface 

 naked when mature, lower closely dotted with minute ferruginous deeply 

 ciliated peltate scales ; veins fine, close, erecto-patent ; fertile fr. similar but 

 smaller. 



Hab. Angola, Welmtsch, 187. 



top ; texture subcoriaceous ; veins moderately close and distinct, subpatent ; upper 

 surface bright-green, naked, lower scattered over with very minute persistent 

 adpressed peltate scale-dots ; fertile fr. much smaller, with a st. 5-6 in. 1. 



Hab. Andes of Columbia. Habit exactly of laiifolmm. 



41*. A. tahitense, Carruth. ; rhizome short-creeping ; scales linear; st. 3-4 in. 1. 

 semiterete, scaly at the base only ; barren fr. lanceolate, 12-14 in. 1., 1 J in. br.'' 

 obtuse, naiTOwed at the base, with small peltate scales on both surfaces ; veins 

 immersed, forked ; fertile fr. smaller. Elaphoglossum, Brack. Fil Wilkes 

 p. 75. 



Hab. Tahiti. Habit of A. gorgoneum. 



43*. A. ornatum, Mett. ; rhizome short-creeping; scales dense, membranous, 

 pale-reddish, ovate-acuminate ; barren fr. lanceolate, 6-7 in. 1., 8-10 lin. br., nar- 

 rowed to both ends, with a 1-2 in. St., densely clothed like midrib beneath with 

 spreading ovate-aristate scales 2-3 lin. 1. ; texture thin but firm ; edge bordered 

 with dense very minute ovate-acuminate ferruginous scales ; veins 1-2-furcate, 

 erecto-patent ; under side dotted with very minute brown lacerated scales ; fer- 

 tile fr. much smaller, on a longer st. Kuhn, Linn. 3Q.p. 44. 



Hab. Andes of Venezuela, Engel, 201. 



46*. A. Mandoni, Mett. ; rhizome slender, wide-creeping ; scales dark chestnut- 

 brown, entire, subulate from a broad base ; barren fr. 1 J in. 1., j- in. br., 

 oblong or ovate, cuneate at base, acuminate at apex ; st. distant, g-1 in. ; tex- 

 ture membranous ; both sides brown-glandular, and clothed with membranous 

 reddish ovate-acuminate scales ; veins translucent, erecto-patent ; fertile fr. 

 smaller, on a much longer st. Kuhn, Linn. 36. p. 47. 



Hab. Andes of Bolivia, Mandon, 12. 



48*. A. rttfidulum, Willd. ; barren fr. lanceolate, 4-5 in. 1., under ^ in. br., 

 narrowed gradually to both ends ; its st. 3 in. 1., with a few castaneous scales 

 at base, and pale-reddish above ; texture subcoriaceous ; veins immersed, A lin. 

 apart, erecto-patent ; scales lanceolate, reddish, membranous, fimbriated, dense 

 below ; fertile fr. unknown. Kuhn, Fil. Afr. p. 47. 



Hab. Madagascar, Herb. Willdenoiv. Differs from its allies by its very oblique veins. 



50*. A. Mullcri, Fourn. ; rhizome short-creeping ; scales dense, ferruginous, 

 lanceolate, ciliated ; st. tufted, barren, 1-2 in. ; fr. lanceolate, oblong, acute, 2-4 

 in. 1. ; surfaces densely clothed with reddish stellate scales ; fertile fr. larger, 

 blunt, longer stalked. Fil. Mex. p. 68. t. \.fig. 2. 



Hab. Orizaba, Mexico, F. Midler. 



40*. A. acrocarpum, Mart. ; caud. erect; barren fr. erect, ligulate, 4-G in. I., 

 6-8 lin. br., narrowed gradually to point, and a st. 1 in. 1., clothed with linear- 





