676 FILICES. 



■j-t I'^of densely rusty-paleaceous, 



163. A. nvnscosum, 8w. Leaf lanceolate-oblong. Hunt, quite entire, cuneate at tte 

 base, sapported by a slender, scaly petiole, coriaceous, glabrescent above, rusty-lepdote by 

 dense, appressed scales beneath : scales lanceolate-acuminate, or ovate, shortly ciliate : leaf-, 

 margin thickisli ; fertile blade linear, tapering into a long petiole. — Schi. Crypt, t. \.b. sin. 

 — A. squamosum, Sehk. (non Su>) A. Langsdorfii, Hook. Grev. {Ic. t. 164), and A. ru- 

 fescens, Idebm., are probably two forms slightly disagreeing from our Jamaica form. — Sterile 

 blade 5"-3" broad, i\"—V' long : scales of the upper side scattered, disappearing, ; fertile 

 blade about 6" broad, 8'" long : petiole of the former 2"-3", of the latter 6"-8" long.— 

 Hab. Jamaica !, Bancr. ; Dominica!, Imr. ; [Haiti 1 and Mexico! to Brazil!: the above 

 quoted synonyms]. 



164. A. vestitum, Schlecht. Leaf lanceolate-linear, bhintish, quite entire, tapering 

 into the slender, scaly petiole, coriaceous, glabrescent above, rusty-lepidote by dense, ap- 

 pressed scales beneath : scales lanceolate-acuminate, shortly ciliate : leaf-margin thickish ; 

 fertile blade linear, bluntish at both ends, long-petioled. — Flum. Fil. t. 139. Mart. Qal. 

 Fil. Mex. t. S.f. 2.— A. fulviim. Mart. Gal. A polylepis, iTie.— Sterile blade 6"-l' long, 

 8"'-10"' broad, fertile 4" long, 6"' broad : petiole of the ftrmer 2"-6", of the latter 5"-8" 

 long.-'HAB. Jamaica!, Macf., Al., on trees. Blue Mountains ; [Mexico to Brazil]. 



165. A. squamosum, Sw. Leaf linear-lanceolate, bluntish, or pointleted, quite 

 entire, tapering into the short petiole, chartaceons, ciliate and rusty -paleaceous on both sides : 

 «(!«?«* spreading and crowded along the petiole and the thinleaf-margiujfoH^-cj&'ate with spread- 

 ing, pectinate bristles, linear- or lanceolate-acuminate along the petiole and on the under side 

 of the blade, passing into pinnatisect bristles on the upper side and often at the margin ; 

 fertile blade linear, acuminate at both ends. — The longer petiole in Swartz's description I 

 regard as an unusual state of a larger form : A. paleaceum, Hook. Grev. (Ic. t. 235 : A. ves- 

 titum, Lovfe), the Madeira Fern reduced to the Jamaica species by Swartz, is distinguished 

 by a broader leaf, and the scales Inostly broader ; but A. squamosum, PI. Spruce, 7185, is in- 

 some respects intermediate, though peculiar iu certain, perhaps individual characters from 

 both. — Sterile blade in our single Jamaica specimen 6"-8" long, 8"' broad, fertile 4" long, 

 4'" broad, petiole in both 2"-l" long. — Hab. Jamaica!, Pd., S. Georges, near Springhill; 

 [Brazil ! and Madeira ; the above quoted synonyms]. 



tt+ Leaf glabrous, or little paleaceous. 



166. A, Tiscosnm, iSw. Leaf lanceolate-linear, or linear, acuminate, quite entire, 

 tapering into the slender petiole, rigid-chartaceous, with minute, scattered scales on both 

 sides, or glabrescent : neins excurrent into the thin, revolute margin : petiole scaly ; fertile 

 blade linear, tapering at both ends.^ZToo^. Grev. Ic. t. 61. Plum.. Fil. t. 129 ? : quoted 

 doubtfally by Swartz on account of not excurrent veins, and there exists really a nearly 

 related Fern (A. simplex, PI. Spruce. 2187 and 5320, nou Sw., allied to A. scolofendrifolium, 

 Eadd.), in which the veins are terminated with a thickish summit, a little distantly from the 

 thin margin.— A. petiolatum, 5w.— Sterile blade 6"-8"(-12") long, 4"'-9"'(-12"') broad, 

 fertile 4"-6" long, 2"'-5"' broad. — Hab, Jamaica I, Macf, Pd., common; Dominica!, S. 

 Yincentl, Guild.; [Cuba ! to Brazil ! ; East Indies I]. 



167. A. simplex, Sw. Leaf lanceolate, or linear-lanceolate, bluntish at the tapering 

 point, and tapering into the shorter petiole, quite entire, coriaceous, glabrous, or with a few 

 minute scales : veins excurrent within the- thickish, revolute margin into a special anasto- 

 mosing arch : petiole glabresceut ; fertile blade linear-lanceolate, tapering into the petiole. — 

 Book. Gen. t. 105. A. — Swartz described an extreme, shortly petioled form, agreeing with 

 one of our Jamaica specimens, but from the same locality a much larger, and apparently 

 identical form was sent : the latter is the same with PI. 'Wright. Cub. 970, and agrees with 

 Bauer's figure quoted above. A. mnrtinioense, Desv. (Eat.), though much receding inhabit 

 by linear, or lauceolate-linear 3"'-6"' broad leaves, shows the same structure of veins and 

 thick-leathery texture, and from certain, intermediate forms and from the general variability 

 of the leaf-shape in Acrostichum, it may perhaps be n variety only, much diffused on the 

 Continent.— Sterile blade .4"-12" long, 9"'-18"' broad, fertile 5"-8" long, 4"'-8"' broad, 

 petiole of the former l"-4", of the latter 3"-6" long.— Hab. Jamaica !, Pd., on decayed tre?s, 



