30 HKMITKLIA. 



4. H. grandifoUa, Spr.; aculeated, fronds pinnated, pinnae 

 large lanceolate acuminated pinnatifid more than two thirds 

 of the way down from the margin, lobes or segments oval- 

 oblong rather acute not closely approximate but leaving a 

 deep and moderate sinus subfalcate serrulate principally to- 

 wards the apex, sori at a little distance from the margin and 

 forming a continued line below the sinus reaching almost to 

 the costa, veins once or twice forked the lower ones angular- 

 ly anastomosing and sending out veinlets which almost meet 

 at the sinus. (Tab. XIV. B.) Plum. Fil. t. 26. Cyathea 

 grandifolia, Willd. Presl. C. horrida, Sieb. Fl. Mixta, n. 331, 

 and FL Mart. n. 375, [not Sm.) Cnemidaria Kohautiana, Pr. 



Hab. Martinique, Plumier. Trinidad, Jamaica, St. Vincent, and proba- 

 bly the West-Indian islands generally. — Allied to the preceilino-, and the 

 two may possibly pass into each other. If so the name o^ grandifolia should 

 be retained. My specimens however seem tolerably constant. The stipes is 

 aculeated and the underside of the frond has frequently the same deciduous 

 scales as in H.obf.iisa. The fronds are 7 — 8 feet long, according to the late 

 Rev. L. Guilding. 



** Fronds bipinnate or decompound. 



5. H. horrida, Br. ; aculeated, fronds bipinnatcd clothed 

 beneath at first and on the rachis with cobwebby toraentum, 

 pinnules large ovate acuminate deeply pinnatifid almost to 

 the base, segments lanceolate short-acuminated or acute 

 lobato-dentate the lower ones almost again pinnatifid with 

 blunt short lobes, sori following the course of the margin but 

 descending in a double line below the sinuses halfway down 

 to the costa, veins pinnated, lower veinlets of the segments 

 often angularly anastomosing. (Tab. XV.) Cyathea horrida, 

 Sm. Presl. Polypodium horridum, L. Plum. Fil. t. 8. Cy- 

 athea commutata, Spr. [excl. the syn. of Plum. t. 14.) 



Hab. St. Domingo, Martinique, Plumier. Trinidad, Z,ocA/ta?-<. Jamaica, 

 Dr. Distin. St. Vincent, Rev. L. Guilding. Jamaica, Dr. Mac Fadgen. 

 — From Plumier's description this does not appear to be arborescent ; for 

 he says, "Ex hujusce Filicis radicibus longis, nigris, exilibus et dense con- 

 feriis, costae sen caulicnli promanant, simplices, quatuor pedes circiter alii, 

 pollicem crassi, recti, tcvetes, paulo antica parte canaliculati, nigricantes, 

 splendentes, ac circumquaqne aculeis rigidis, nigris et longiusculis poUen- 

 tes." — Pinnules in our specimens 1 — ^\ foot long, ovate, sessile: at once 

 distinguished from the two preceding by the 2;reat size and form of the pin- 

 n8B, deeply divided into long, acute or acuminated segments, as well as by 

 the much ramified veins, and the copious fructilication at first sight appa- 

 rently scattered without order, and forming, as it were, a broad band close 

 to the margin all round the pinnules: — yet if this be accurately examined, 

 the sori will be seen to be placed with great regularity, in a single line or 

 series, following the edge of the shallow lobes, but extending down from 

 the sinirs about halfway to the costa, then returning up into the margin of 

 the adjoining lobe. 



