88 HYMENOPHYLLUM. 



j)iiii]:itifi(l, sometimes almost so much divided as to justify its being placed 

 iu the next division. 



4. II. abrupt um, Ilook.; small, frond broadly oblong trun- 

 cated at the apex deeply pinnatifid, the segments spreading 

 linear-oblong entire retuse rarely bifid, involucres terminal 

 orbicular-cuneate almost wholly immersed, the semiorbicu- 

 lar valves short entire, receptacle protruded in age, stipes not 

 winged. (Tab. XXXI. B.) 



H:il). Jamaica, Mmzies, Purdie. — I do not find this anywhere described. 

 C'audcx creeping, liliform. Stipes slender, half an inch long. Fronds \\ 

 inch long by I inch or less broad, very delicate, thin and membranaceous, 

 deeply i)innatifid, almost to the rachis ; segments mostly entire, the upper 

 ones coming to a nearly level top. Involucres almost wholly sunk, cune- 

 ate ; the short lips forming a half-circle, receptacles much protruded, espe- 

 cially in age. 



** Fronds compound, pinnate, or (nice or more pinnatifid, hairi/ or cili- 

 aled,^ entire or rarely indistinctly denticulate. (Sp. 5 — 28^. 



f Fronds pinnatifidly didded. (Sp. 5 — 16^. 



5. H. hirsutum, Sw. ; pendidous, clothed with tawny 

 stellated hairs, fronds linear-oblong more or less elongated 

 pinnatifid, the primary segments short (simple when young) 

 ])innatifid and subflabellate, the segments linear-oblong ob- 

 tuse mostly pointing upwards and subunilateral, involucres 

 nearly orbicular hairy, the subcuneate base sunk in the frond. 

 —Stv. FL Iiid. Occ. lii. p. 1746. Syii. Fit. p. 146. Willd. Sp. 

 PL V. p. 517. Ratldi, Fil. Bras. t'. 19, f. 3. Hedw. Fll. cum 

 Ic. Hook, el G)-ev. Ic. Fil. t. 84, (young plants). H. venus- 

 tum, Desv. Trichomanes hirsutum, Linn. Sp. PL p. 1561. 



Hab. Jamaica, Su'artz, Menzies, MacFadyen, Purdie. Trinidad, Lock- 

 htirt, C. S. Parker. Organ Mountains, Gardner, n. 214. Huanuco, Hanke. 

 — Stipes generally short, not winged, hairy above. The specimens figured 

 in Hook, et Grev. Ic. Fil. are only young ones, with simply pinnated fronds. 

 I led wig's plate is very characteristic, as is that of Raddi; for the mature 

 Ironds are often a span and more long, flexible, pendulous, the primary seg- 

 ments deeply divided in a fan-shaped manner. Habit resembling that of 

 the pinnated division, but the fronds are throughout pinnatifid, the wing of 

 the main rachis being as broad as that of the costa iu this division. 



6. II. ciliatum, Sw. ; fronds oblong-ovate or ovate acumi- 

 nated bi-tripinnatifid, segments linear obtuse, the margins 

 (chiefly) and the costa with branched hairs, involucres rather 

 broader than the segments free suborbicular obliquely cor- 

 date at the base, hairy at the margin of the valves, stipes 

 winged above. — Stv. FL Ind. Occ. iii. p. 1753. Syn. FiL p. 



§ //. Oryancnsc is very indistinctly ciliated, and slightly denticulate, as 

 are two or three others. 



