512 piltces. [Acrostichum. 
Veins distinct, rather ascending, in- apart, usually forked, Fertile 
frond the same shape, but much smaller. 
Mauritius, forests of the Pouce, etc. Also Madagascar, Bourbon, Natal, Tropical 
Africa and Tropical America. 
6. A. viscosum; Sw.j HooJc. and Baker , Syn. Ml. 406. Eootstock 
short-creeping ; scales minute, dense, linear-subulate, dark chestnut- 
brown. Sterile frond linear or lanceolate, moderately firm in texture, 
6-12 in. long, f in. broad, narrowed very gradually to the base and 
an acute point, slightly furfnraceous beneath, especially on the midrib 
and furnished with scattered sessile glands ; stipe slender, 2-4 in. long, 
thinly minutely scaly. Veins distinct, ascending, simple or forked, 
-Jj— Jg- in. apart. Fertile frond narrower, on a longer stipe. A. salici- 
folium, Willd . A. neriifolium, Wall. 
Var. glabrescens, Baker . Sterile frond larger, 1-lf in. broad, 
nearly or quite naked. 
Var . lanatum, Bojer , MSS. Sterile frond 6-8 in. long, f in. broad, 
sometimes obtuse, most narrowed in the lower half, thinly matted on 
both sides all over when young with delicate lanceolate ciliated ferru- 
ginous scales. 
Mauritius, frequent on old trunks in the hill woods. Var . glabrescens ; Seychelles, 
in the woods of Mahe, Ward! Horne ! Var. lanatum ; in Mauritius at Bois Cheri, 
Bojer ! Warmer zones of both hemispheres. 
7. A. Boivini, Mett.j Kuhn , Fil. Afric. 43. Eootstock short- 
creeping ; scales dense, lanceolate, acuminate, membranous, bright 
reddish-brown. Sterile frond lanceolate, \ foot long, f in. broad, 
membranous, thinly scattered over with minute ovate acuminate scales ; 
stipe 3 in. long, densely clothed with spreading linear-subulate scales ; 
veins ascending, forked, ^ in. apart, thickened at the tip. Fertile 
frond shorter and rather narrower, on a slightly longer stipe. 
Mauritius, Boivin , according to Dr. Kuhn. Endemic, if it be not, as I suspect, 
a variety of A. Aubertii , Desv. 
8. A. spathulatum, Bory ; Hook, and Baker , Syn. Fil. 408. Eoot- 
stock slender, short-creeping or suberect ; scales minute, brown, linear. 
Sterile frond oblong or obovate-oblong, moderately firm in texture, 
obtuse or subacute, 1-2 in. long, cuneate at the base, densely clothed 
when young with brown linear or subulate scales. Stipe about as long 
as the frond, densely clothed with spreading similar scales ; veins 
erecto-patent, distant, forked. Fertile frond smaller, more rounded 
at the ends, on a longer stipe. A. piloselloides, Brest. 
Mauritius, at Grand Port and Savanne, Bojer. Seychelles, on trunks in the 
mountain woods of Mahe, Horne! Warmer zones of both hemispheres. 
9. A. squamosum, Sio. ; Kook, and Baker, Syn. Fil. 411. Eoot- 
