520 ACROSTICHUM. 



scales like those of the stem ; veins forked, moderately close ; fertile fr. much 

 smaller with longer stems. 



Hab. Rio Janeiro, Glaziou, 5367. 



25*. A. pygmceum, Mett. ; rhizome capillary, wide-creeping ; scales few, very 

 minute, linear-subulate ; sterile fr. ligulate, 2-4 in. 1., 2-4 lin. br., bluntish, 

 distinctly crenate, narrowed very gradually to the base on a very short naked 

 stem ; texture thin but firm ; under surface naked, or with a few very minute 

 black adpressed scales ; fertile fr. oblanceolate, 1-1^ in. L, inciso-crenate, 

 minutely ciliated, narrowed very gradually by a wing into a st. 1-1 J in. 1. 

 Kuhn, Linn. 36. p. 42. 



Hab. Andes of Columbia and Ecuador, Spruce, 5682, &c. 



28'*. A. recognitum, Kze. ; caud. suberect ; scales dense, brown, linear-subulate ; 

 barren fr. lanceolate, 2-3 in. 1., f-i in. br., obscurely repand, narrowed to the 

 point and base, its st. slender, nexuose, as long as the lamina, clothed with 

 deciduous subulate scales ; texture thin but firm ; surfaces and edge with a few 

 similar subulate scales ; veins distant, erecto-patent, mostly simple ; fertile fr. 

 similar but much smaller. A. setosum, Liebm. 

 , / 



Hab. Mexico^ Like a small variety of villosum, with fewer scales. 

 A- 



28*. A. Fraseri, Mett. ; caud. erect ; scales dense, red-brown, lanceolate- 

 subulate, membranous ; sterile fr. oblanceolate, obtuse, with a cuneate base, 

 2 in. 1., in. br., with a stem as long as itself ; texture subchartaceous, both 

 surfaces hispid with red-brown bristles ; veins lax, oblique, ceasing in a black 

 dot within the margin ; fertile fr. obtuse, as broad and with a similar st., but 

 under an inch long. Kuhn, Linn. 36. p. 43. 



Hab. Andes of Columbia and Ecuador, Fendler, 362, &c. 



28*. A. cubense, Mett. ; rhizome short-creeping ; scales dense, lanceolate-acumi- 

 nate, pale-ferruginous, 2-3 lin. ; barren fr. spathulate-oblong, 2-4 in. 1., 1 in. br., 

 obtuse or acute, narrowed gradually at base ; its st. 1-2 in., densely clothed, with 

 subulate ferruginous scales ; midrib on both sides and edge more sparsely fringed 

 with similar scales ; texture membranous, pellucid ; veins lax, rather ascending ; 

 fertile fr. narrower. Iiuhn, Linn. 36. p. 46. 



Hab. Cuba, Wright, 1040. 



29*. A. amygdalifolium, Mett. ; rMsome green, slender, wide-creeping ; scales 

 sparse, adpressed, membranous, reddish, ovate, obtuse or acute, irregularly toothed ; 

 sterile fr. sessile, entire, lanceolate- acuminate, 2^-5 in. 1., 6-10 lin. br., narrowed 

 rather suddenly at the base ; texture membranous, pellucid ; upper surface palea- 

 ceo-punctate ; veins distinct, forked, ending in a dot within the edge ; fertile fr. 

 3-4 in. 1., % in. br., narrowed gradually at the base. Kuhn, Linn. 36. p. 41. 



Hab. Costa Eica, Hoffmann. 



29*. A. Mettenii, Kuhn ; rhizome short-creeping ; scales membranous, suben- 

 tire, ferruginous, linear-subulate, dense both upon rhizome and stem ; barren fr. 

 lanceolate, 4-5 in. ]., f in. br., narrowed gradually to both ends, with a st. 3-4 

 in. 1. ; texture thin but firm ; veins distinct, erecto-patent, 1 lin. apart ; both sides 

 scattered over with pale reddish finely denticulate linear-subulate scales from a 

 deltoid base ; fertile fr. smaller, with a longer stem. Linn. 36. p. 48. 



Hab. Valley of Lloa, Ecuador, on trees with A. dendricolum, Jameson. 



