192 PTERIS. 



ments very regular, remarkable in the form of the segments, an oblong square, sin- 

 gularly obtuse or sometimes truncate, but sharply toothed at the apex. Spinules 

 on the rachis at the base of the lobes frequent. By some accident this species 

 does not seem lo have been generally distributed by Dr. Wallich ; at least I have 

 never seen Wallichian specimens, which are the authority for the plant of 

 Agardh. Like many other Ferns, it is common to Eastern Bengal and the Malay 

 Islands. Blume's Pt. intermedia (not of Kaulfuss) seems to be the same plant, 

 as far as can be judged from his brief character. 



58. Pt. (Eupteris) stridens, Ag. ; " lateral branches of the 

 ternate frond bipartite, intermediate one pinnate, pinnae lan- 

 ceolato-acuminate pinnatisected, segments triangular-lanceo- 

 late entire cartilagineo-marginate and submucronate, veins 

 forked distinct {discretis)." — J(/. Sp. Gen. Pterid. p. 45. 



Hab. Jamaica, Bancroft {Herb. Hook.), Lunan {Herb. Greville). — " Stipes 

 stramineous, and, together with the frond, a foot and a half higli, glabrous and 

 nearly smooth {sublcevis). Fronds ternate, lateral branches scarcely a foot long, 

 pinnated, sending down from below a pinnated auricle ; intermediate branch 

 pinnated, lowermost segment subpinnatifid. Pinnae of the lateral branches usually 

 alternate, of the intermediate one opposite, shortly petiolate, 2-5 inches long, 

 scarcely more than an inch wide at the base, towards the apex gradually atte- 

 nuated, pinnatisected. Segments approximated at the base, lanceolate, obsoletely 

 falcate, margined with a very slender cartilaginous line, sterile ones entire, 

 shortly mucronated at the apex. Veins all forked or simple, inferior basal one 

 from the axil of the costa, superior one springing from a little above the axil. 

 Indusia whitish, abrupt at each extremity (' utrinque abrupta,') obtuse. Co- 

 lour dark green, and the substance of the frond is rigid and harsh {stridens)." — 

 I have little to add to the above character and description. My own specimen, 

 from which Professor Agardh drew up his description in part, is but a portion of 

 a frond, a foot long. Dr. Greville's was evidently more perfect. Assuredly its 

 affinity is with Pt. deflexa, Lk. ; but the segments, though mucronated at the 

 point, are quite entire at the margin. 



59. Pt. (Eupteris) coriacea, Desv. ; frond 1^-2 feet long 

 broad-deltoid ternate (subpedate) coriaceous pale-green bi- 

 tripinnate, pinnae subpetiolate lanceolate finely acuminated 

 into a serrated point pinnatifid nearly to the rachis (or con- 

 fluently pinnate), segments linear falcate acute serrated mu- 

 cronate and serrated at the apex beyond the sori, at the base 

 more or less distinct, rachises and costa densely clothed with 

 slender flexible spines, veins forked, involucres intramarginal 

 continuous membranaceous, stipes and main rachis strami- 

 neous the latter chiefly rough with short rigid spines. (Tab. 

 CXXIV. A.) — Desv. in Mem. Soc. Linneenne, vi. p. 300. Ag. 

 Pterid. p. 44. — Var. /3 ; spinules on the rachises and costa 

 all short and more rigid. 



Hab. Peru, Bombey ; Pariahuanca, Matheirs, n. 1095. Var. j3. New Granada, 

 Linden, n. 1041. Ocaua, Sc/ilim, n. 316. Teciuondaraa, Bogota, Holion, n. 41. — 

 This, allied in habit to the Aryuta group, is a very remarkable species; the 

 under side of the pinnae and segments, but confined to the rachis and costa, are 



