670 FILICES. 



mucronulate above at the origin of their divisions : veins forked, all free, lowest inserted 

 into the costa : petiole pale, prickly below j sori short, about half as long as the lobes, 

 somewhat distant at the sinus.— Plum. Ml. t. 13. 14.— Middle lobes 1" long, 3'" broad, 

 superior and inferior decrescent: rhachis 4'" broad. — Hab. Trinidad {Ag., J. S?n.); [Haiti 

 to Guiana !, PI. Kegef\. 



127. P. quadriaurita, Retz., Hook. Leaf pinnatisect : segments pinnatipartite, 

 lowest 2{-Z)-sect : secondary ones oblong-linear, blunt, entire, repand at the summit: ribs 

 with a slender prickle above at the origin of their divisions : veins forked, all free : petiole 

 pale, purplish below ; sori continuous below the apex, contiguous at the sinus. — Hook. Spec. 

 t. 134. B; Gen. t. 64. A.— P. repandula, Lk., Mett. P. felosma, /. Sm. P. Plumieri, 

 W. {ex pi. cult.).— Ultimate segments 8'" long, 2'" broad : rhachis V" broad.— Hab. 

 Jamaica !, Macf, Pd., Wils. ; Trinidad !, Wood/. ; [all tropical countries]. 



128. P. Swartziana, Ag. I Leaf pinnatisect : segments pinnatipartile, lowest 2-3- 

 sect : secondary ones linear-oblong, blunt, serrate above the sorus : ribs mucronulate above 

 at the origin of their divisions : veins forked, all free, the lowest often inserted into the 

 costa : petiole pale, purplish-brown below ; sori continuous, about half as long as the 

 leaf-segment. — Hook. Grev. Ic. t. 142. — P. biaurita, Sw. {non L.). Ultimate segments 8 

 long, 3'" broad: rhachis H'" broad. — Hab. Jamaica!, Pd., Wils. 



129. P. deflexa, Lk. Leaf 2-Z-pinnatisect : ultimate segments oblong, dilated at 

 the base, subfalcate mucronate-pointed, cartilaginous at the margin, entire or few-serrate 

 above the sorus : ribs mucronulate above at the origin of their divisions : veins all free, 

 forked, or simple, subdistant : petiole pale ; sori continuous below the apex. — P. stridens, 

 Ag. : the form with entire leaf-segments. P. flabellata, var. americana, Ag. (S. Vincent) is 

 to be compared with it. — Ultimate segments 6"' long, 2'" broad at the base. — Hab. Ja- 

 maica {Bancr.: P. stridens, Ag) ; [Venezuela ! (Morilz) to Brazil]. 



130. P. incisa, Thicnb. Leaf 2-pinnatisect, glaucescent beneath : secondary segments 

 pinnatipartite, distant, lowest approximate to the common rhachis : ultimate ovate-oblong, 

 bluntish, subentire, broad at the base : ribs unarmed : veins dichotomous, usually connected 

 by their lowest branchlets : petiole pale, at length purplish ; sori continuous below the 

 xpix.—Raddi, Fil. Bras. t. 71.— P. vespertilionis, Lab. P. pallida. Radd. P. gkmca, 

 Morilz.— Our form is "scandent ;" secondary segments about 3"-2" long, 12"'-8'" broad at 

 the base. — Hab. Jamaica !, Lamb., Bancr. ; [Guadeloupe ! and most tropical countries to 

 Australia, New Zealand !, and the Cape]. 



§ 2. Sori included between the revolute leaf-margin and an inferior, usually narrower 



indusium. — Veins forked, free (Ornithopteris, Ag.). 



* Petiole with a single bundle of vessels. 



131. P. scalaris, Moritz ! Subscandent, glandular-hairy; leaf 3-2-pinnatisect : seg- 

 ments distant, partial pinnatipartite, ultimate small, ovate or ovate-oblong, usually blunt . : 

 petiole pale, with a single bundle of vessels ; sori continuous : indusium broad. Hook. 

 Spec. t. 121. B, t. 141. C— Inferior partial segments 8"'-2 w long, 4"'-l'" broad.— Hab. 

 Jamaica !, Macf, Wils. ;, [Venezuela ! to Peru !]. 



** Petiole with many distinct bundles of vessels. 



132. P. aquilina, L., var. lanuginosa, Bory. Leaf 3-pinnatisect, villous beneath 

 and at the rhachis : ultimate segments obloug-lanceolate, blunt, broadly adnate at the eaU * 

 base, inferior subdistant : petiole pale, with numerous bundles ; membranaceous part ot tn 

 revolute margin ciliate, distant from the rib. — The northern form (a) is only distinguisne 

 by the glabrous rhachis, and the leaf pubescent or glabrous beneath. — Hab. Jamaica {Hook.) . 

 [both temperate and tropical zones, our form in warmer climates]. 



133. P. caudata, L. Leaf 3-pinnatisect, sericeous beneath or "glabrous:" ultimate 

 segments linear or linear-oblong, blunt, superior oblique at the shortly decurrent, doumwar 

 cub/ate base, all usually distant, terminal elongated : rhachis glabrous : petiole pal e > W1 

 numerous bundles ; membranaceous part of the revolute margin ciliate or glabrescent, abou 

 i as broad as the segment.— SI. t. 63. Plum. Fil. 1. 29.— Segments V" broad, variable 

 in length. — Hab. Jamaica'., Lambert, Wiles ; [Cuba! and Mexico! to Guiana]. 



