riXilCES. 693 



helow the sinus : rhachis hairy, sub-4-gonal ; sori equidistant from the midrib and margin : 

 indusmra reniform.— 5/. t. 52./. l.—k.moWe, Sat.in PI. Wr. Cai. 818.— li'-3' high ; 

 segments 3"-5" long, 6"'-8"' broad.— Hab. Bahamas; Jamaica!, Maef.,*¥d., Wils. ; 

 Domimca !, Imr., S. Vincent 1, Guild., common ; [Florida and Texas ! to Brazil ! ; Galapa- 

 gos ! ; S. Helena !]. ^ 



259. A. deltoideum, Sm. Leaf pinnatisect, rigid, shortly hispidulous at the ribs be- 

 neath : segments oblong -lanceolate, bluutish or pointed, pinnatifid to the middle, sessilej 

 lower air ujitly reduced, upwards auricled: lobes ■ovdd-oVio'ag, entire, obliquely pointed •" 

 veinlets simple, lowest pair contiguous at the sinus with a plait between them : rhachis hairy, 

 obtusely sub-4-gonal ; sori nearer to the margin than the midrib : indusium small, reni- 

 form.— 1'-2' high ; segments 3" long, 8"'-10"' broad, lower 8"'-4"' long.— Hab. Jamaica !, 

 Mac/., Saner., Wils., in mountain-woods; [Cuba! to French islands!]. 



^ 260. A. molle, Sw. Leaf pinnatisect, pubescent : segments lanceolate-acuminate, 

 pinnatifid to about the middle, sessile, lowest gradually or little decrescent : lobes oblong, 

 blunt or bluntish, entire: veinlets simple, lowest pair anastomosing below the sinus, forming 

 a vein, that runs into the sinus : rhachis hairy, obtusely sub-4-gonal ; sori equidistant from the 

 midrib and margin : indusium reniforra-roundish. — Schlc. Orypt. t. 34. b. — A. sclerophyllum. 

 Mat. in PI. Wr. Cub. 1001. 1005. 1006 {non Kse.). A. tetragonum, Hoolc, from S. Vin-- 

 cent (non Metten.) — Variable, l'-4' high, not to be distinguished fi-om A. patens, Sw., but 

 by the veins ; segments 3"-14"(-B") long, 6"'-8"' broad.— Hab. Jamaica ! ; S. Vincent I, 

 Guild. ; [all tropical countries to New Mexico !, Japan, Madeira I, Algeria, the Cape ! and 

 Australia]. 



261. A. unitum, Sw. (non Sieb.). leaf pinnatisect, rigid, glabrescent : segments 

 linear, shortly acuminate with a bluntish point, pinnatifid to one-third to half, sessile, 

 lowest as large : lobes ovate-deltoid, entire : veinlets simple, 1-2 lowest pairs anastomosing, 

 and forming an excurrent vein below the sinus : rhachis glabrescent, 3-gonal ; sori equi- 

 distant from the midrib and margin : indusium reniform-roundish. — Sch?c. Crypt, t. 33. b. 

 sinistr. — Polypodium, L. A. gongylodes, Schh. : a form with blunt lobes. Nephrodium 

 propinquum, R. Br. N. paludosum, Liebm. 1 — In habit approaching A. Serra, Sw., but 

 distinguished by shorter, less acuminate segments, and anastomosing veins. 2'-4' high ; 

 segments 3"-4" long, 4"'-6"' broad. — Hae. Jamaica !, Pd., in morasses ; [Guadeloupe ! ; 

 all tropical countries to Porto Alegre; and the Cape]. 



262. A. brachyodon, Qr. Leaf pinnatisect, glabrescent : segments oblong-lanceolate, 

 shortly acuminate, coarsely crenate-serrate to one-fom'th, bearing a gland at the petiolulated 

 base beneath, lowest as large : serralures trapezoid-oblique with a narrow sinus, entii'e : 

 veinlets simple, lowest anastomosing or separated, following pair contiguous at the sinus : 

 rhachis angular ; sori somewhat distant from the midrib ; indusium small, cordate-renifiirffl 

 or suppressed. — Seem. Fanam. t. 49. — Nephrodium, Hook. Polypodium, Kee. Phego- 

 pteris Seemanni, /. Sm. — 3'-4' high ; segments 6"-8" long, li" broad, serratures 3'" broad. 

 — Hab. Dominica, S. Vincent (jSook.) ; [Panama to Peru I ; Galapagos]. 



263. A. serrulatnm, Metten. " Leaf pinnatisect, glabrescent : segments lanceolate- 

 acuminate; coarsely crenate-serrate, obliquely rounded at the suisessile base, lowest half .is 

 long : veinlets simple, lowest anastomosing below, following pair at the sinus ; indusium 

 reniform."- /S/. t. 43. f. 1.— Polypodium, Sw.—" 2"-3" high ; segments 5" long, 8'" broad 

 (Metien.). With this are to be compared : 1° A. Imrayammt [Nephrodium, Hook. t. 242. 

 A.), distinguished by approaching, free veinlets, and small, appressed serratures (having a 

 " rhachis semiterete on the back ") ; aud 2° Fendl. Venez. 474, combining the coarse ser- 

 ratures of Mettenius's diagnosis, a glabrous, obtusely 4-gonal rhachis, and the veinlets of 

 Hooker's figure : both approach Folyp. flavopunctatum, Kze., but Fendler's Fern is not 

 pellucid-dotted. — LIad. Jamaica (<Sw.),in mountain-woods; Dominica {A. Imrayanum). 



264. A. asplenioides, Gr. Leaf pinnatisect, puberulous on the ribs beneath, some- 

 what rigid : segments oblong-linear, shortly acuminate, coarsely crenate, truncate or sub- 

 cordate «< the equal, subsessile base, lowest little and gi-adually decrescent : veinlets simple, 

 lowest pair anastomosing and sending a vein to the sinus (rarely separated), second pair 

 contiguous at tKe sinus -. rhachis 4-gonal, pubescent ; indusium "reniibrm " or suppressed. 

 —SI <..43. /. 2. 50. /. B. — Polypodium, Sw. A. sclerophyllum, .Es& (A. scolopendrioides,- 



