134 TlUCHOMANIiS. 



111. Jac. p. -2-27. J. Sm. in En. Fil. Philipp.— /3. ultimate 

 and penultiiuute divisions broader and more crowded. 



Ilal). Tropics iu the Old and New World. Jamaica, Stoartz, Mcmies. 

 Dominica, Dr. Imray. Martinique, Sieber ; and probably general in the 

 West Indian islands. Brazil, Raddi, Douglas, Gardner, n. ;)0.5 and 5953, 

 Ihaiburi/. Peru, Matheirs, n. 1089. Quito, Jameson. IVIauritius, Bon/, 

 Jiojer, Sieber, Sijn. Fil. n. 272, and others. Pacific Islands, Niyhtimialc. 

 Philippine Islands, t'«mi«(/, ». 134 arwZ 189. Sincapore, Lubb, Wallich. 

 Ceylon, Mrs. Gcnl., Walker. Java? liluine. South Africa, Z)»<)(7e, — ^. 

 Pacific Islands, Nightingale. — The copious specimens I liave examined, 

 to enable me to determine the above references and localities, do not vary 

 in any very remarkable degree. The Mauritius T. achillaefolium is quite 

 the same as our West Indian T. rigidum, in every essential particular. In 

 specimens from various countries, there is a difference in the greater or less 

 breadth of the segments, which are generally narrow and more or less acute 

 at the apex. Involucres principally from the inner margin of a segment, 

 which looks like a broad spine. Stipes 4 — (> or 8 inches : the frond about 

 the same length : the former with chaffy hairs at the base, rather rough, 

 slightly margined above vvith an indistinct elevated line. Rachis also mar- 

 gined but winged iu the upper part, and the secondary rachis is distinctly 

 margined. Sori rather numerous. The whole plant is singularly black and 

 rigid when dry. I presume Blume's T. ohscurum to be the same with this 

 plant, as the character does not materially dilfei'. Our var. |3. is scarcely 

 distinguishable from T. elo)igatum. 



57. T. millefolium, Desv. ; "fronds subdeltoid oblong, low- 

 er pinna) decurrently bipinnate, pinnules subdecurrent ulti- 

 mate ones elongate coadunate somewhat dilated upwai'ds 

 denticulate, sori axillary, receptacles elongated, stipes and 

 racliis naked terete." Desv. Mem. Linn. Soc. Par. ii. p. 329. 

 " T. rigidum? Raddi, Si/n. Fil. Bras. i. p. 19, {ex'cl. syn.).'''' 



Hab. Brazil ? (Desvaux). — As the author quotes T. rigidum, Raddi ; it 

 is not unlikely that his plant is also the true rigidum of Swartz. 



58. T. elongatum,K. Cunn.; tufted ei'ect rigid dark green, 

 fronds ovate bipinnate, pinnules very close compact imbri- 

 cated oblong-cuneate inciso-pinnatifid, segments short acute 

 sometimes bifid, involucres very copious (almost covering the 

 under side of the frond) supra-axillary in the sinuses of the 

 pinnules cylindrical free tapering at the base, the mouth en- 

 tire scarcely spreading not 2-lippcd, receptacles very much 

 elongated curved, stipes terete as well as the rachis and every 

 where glabrous. A. Cunn. Nov. Zel7 in Comp. Bot. Mag. 

 ii. p. 3G8. Hook. Ic. Plant, v. viii. i. 701. 



Hab. New Zealand, Northern Island, A. Cunningham, Colenso, J. D. 

 Hooker and others. — Stipes 4 — 6 inches high : fronds generally 3 — 5 

 inches, dark green, resembling T. rigidum in very many particulars, but 

 the pinnules are broader, less divided, more cuneate, the segments general- 

 ly shorter : the involucres more copious, from every deep sinus of the pin- 

 nules, with very long curved receptacles; and the stipes and lower part of 

 the rachis are quite destitute of wing or evci;i margin, and not in the least 

 scabrous. 



