FILICES. 699 



§ 3. Few veinlels connected in a network, most free: leaf and petiole scaly 

 (Lepicystis, J. Sm.). 



295. P. incanum, Sw. Low: leaf pinnatipartite, coriaceous, glabrescent above, 

 densely covered with rusty scales beneath : segments distant, oblong-linear, bluntish, invo- 

 lute, usually subentire, connected by the narrowly decurrent and upward dilated base, most 

 equal; sori ] -serial.— Schk. Crypt, t. 11. b.— P. velatum, Schk. Acrostichum polypo- 

 dioides, L.— 4"-l' bigh ; most segments 6"'-8'" long, l*'"-2'" broad, 2"'-6'" distant from 

 each other.— Hab. Jamaica !, all coll., on trees ; S. Vincent ! ; Trinidad !, Schk.; [Southern 

 United States ! and Cuba ! to Uruguay ! ; Galapagos ! ; tropical Africa]. 



§ 4. All veinlels free, ("rarely a few anastomosing") (Ctenopteris, Bl.). 

 * Feinleh divided or 2 -fid, mixed with simple ones. 



296. P. dissimile, L. Leaf pinnatisect, membranaceous-chartaceous, glabrous : seg- 

 ments distant, lanceolate or lanceolate-linear, acuminate, repand, superior obliquely adnate 

 at the upward dilated, lowest subsessile at the cuneate base: veinlets dicbotomouslv 

 branched (sometimes partly anastomosing) ; sori oval, terminating the lower anterior 

 branches of the veinlets.— Schk. Crypt, t. 14.— P. sororium, Kth— Habit of P neriifo- 

 hum, Schk.— 2'-3' high : longer segments 5"-6" long, 8"'-10"' broad, 8"'-10'" distant 

 worn each other at the base. — Hab. Jamaica (Sw.) ; Dominica !, hnr., S. Vincent !, 

 Guild. ; [Cuba ! and Mexico ! to Venezuela ! and Peru!]. 



297. P. pectinatum, L. Leaf pinnatisect, elastical-charlaceous, puberulous, much 

 longer than the petiole : segments regularly alternate, horizontal, linear from a snbequal, 

 subulate, adnate base, bluntish, usually entire, most contiguous or slightly cohering : vein- 

 lets dichotomously branched or bifid ; sori terminating the anterior branches of the veinlets. 

 ■—Plum. Fil. t. 83.— P. Sehkuhrii, Radd. (Schk. Crypt. 1. 17. b. sinistr.) : a form with the 

 lowest segments not decurrent.— 1'-3'(-5') high ; segments 9"'-18'" long, 2'" broad above 

 the base. 



«. Most segments approximate, separated by an acute sinus. — P. lomariiforme, Kze ., 

 Metten. ! : a form with subfalcate segments, the lowest distant. 



£. simite, L. Segments distaut, separated by a rounded sinus, or the base produced at 

 both sides like a wing. — SI. t. 32 : quoted by Linnaeus.— P. Otites, W., Metten. I (non Sw.). 



Hab. Jamaica!, Macf, Bancr.; Dominica!, Imr. ; [Cuba! to Brazil!]. 



fc98. P. taxifolium, L. Leaf pinnatisect, rigid-coriaceous, glabrate from fugacious 

 Pilose down beneath, shortly petioled, tapering at both ends : segments regularly alternate, 

 nearly horizontal, lanceolate-linear or linear, from a subeqnal, subulate, adnate base, con- 

 tiguous, entire, revolute at the margin : most veinlets 2-fd, " some dichotomously branched," 

 all free : rhachis rusty-pilose ; sori terminating the anterior branches of the veiulets. — 

 Plum. Fil. t. 89.— P. Plumula, W.— G"-12' r high ; middle segments 8"'-12'" long, 2 m 

 broad at the base. — Hab. Jamaica .', Pd. ; [Haiti ! and Mexico ! to Ecuador ! and Brazil !]. 



299. P. curvatum, Sw. Leaf deeply pinnatipartite, elastical-charlaceous, granular- 

 pvberulous beneath, subsessile or shortly petioled : segments regularly alternate, spreading, 

 lanceolate-linear from an obliquely subulate, adnate base, bluntish, repand-entire, all 

 cohering at the base, lowest much decurrent, deltoid: veinlets partly 2-fd, partly simple; 

 sori terminating the anterior branches of the veinlets.— P. Moritzianum, Lk. in PI. Morttz. ! 

 P- eurvatnm, Metten. (PI. Lechl.), is distinguished by pinnatisect leaves a longer nctiole, 

 and pilose down — Cccspitose, about 1' long, ascending ; most segments 1 long, 2'" broad 

 above the base.— Hab. Jamaica!, Pd., on trees near the mountain-peaks ; [Guadeloupe; 

 Venezuela! to Ecuador!]. 



300. P. Otites Sw (non W.). Leaf pinnatisect, elliptical-membranaceous, puberu- 

 lous at the ribs or glabrescent, much longer than the petiole : segments distant spread.ng, 

 Hnearfrom an obliquely adnate, narrowly decurrent base, sinuate (or serrulate , bluntish : 

 rhachis puberulous? veinlets partly 2-fd, partly simple; son terminating the anterior 

 branches of the veinlets.-iW Fil. t. 85.-P. teuuifohum, Mh P •}<«?«.. Hook 

 (Spec. t. 279. B) ■. a form with partly serrate and P. pibpes. Hook. (Ic. I 221), wt* 

 dssected segments.-®' -\2» high! segments 8"'-12'" long, U"' broad.-H AB . Jamaica!, 

 Macf., Wiles ; [Cuba ! and Veuezucla I to Peru !]. g y 



