TRICIIOMANES. 117 



sunk in the frond, the mouth dilated concave scarcely 2-li])- 

 ped, receptacles much exscrted, stipes ehmgated. — Huok. et 

 Grev. Ic. FlL t. 155. T. undulutum, IVall. Cat. n. UiO. 



Uab. Mauritius, Bojer, WalUch, Nhaud. — At lirst si}^lit this nii(,'lit al- 

 most be mistaken lor large sjiecimens of T. re/>t<ni.i ; but the Iroiul is more 

 flabelliform, tapering into a longer stipes, the involucres are <iuitc sunk or 

 immersed in the fronds aud the receptacles are cxserted. 

 ff Fronds with a central casta or rib, pinnated uith simple or dicholmnous 

 obi i(/ lie veins. {Sp. 9 — 12). 



9. T. muficoides, Sw. ; caudex crcc']niig tonicnt()S(>, fronds 

 small erect simple everywhere glabrous oblong or oblongo- 

 lanceolate obtuse cinieatc and nearly sessile sinuato-])innali- 

 fid with an intramarginal vein, reticulations in paralk-l lines 

 minute, involucres cuneate wholly sunk, the mouth spreading 

 scarcely 2-lipped, receptacles slightly exserted. — Sw. Ft. Ltd. 

 Occ. p. 1726. Syfi. Fil. /?. 141. WUld. Sp. PL v. p. 500. 

 Hook, et Grev. Ic. Fil. t. 179, [e.vcl. .^ijn. T. hyraenodes, 

 Hedw.) 



Hab. West Indies. Jamaica and Hispauiola, Swartz, Wiles and Ilig- 

 son. Dominica, C. S. Parker. St. Vincent, L. Guildimj. Java, Zollin- 

 ger, in Herb. Heward. — An elegant and very delicate species, 2 — 3 inches 

 high. The venation is not flabellate, but approaching to it; there is a cen- 

 tral vein or costa whence the lateral veins diverge at very oblique angles, 

 and are rather close, simple or dichotomous. The species is well markefl, 

 especially by the intramarginal vein to which the lateral veins from the eos- 

 ta are united. Involucres wholly sunk ; the mouth very wide, level with 

 the margin. 



10. T. erosumy fVilld.; " caudex filiform creeping dilated 

 at the apex laciniated and irregularly pinnatifid, ])rincipal 

 veins forked secondary simple slender." P. de Beativ. Fl. 

 Oware et Benin, ii. p. 79, t. 109,/ 3. IVilld. Sp. PI. p. 501. 



Hab. Oware and Benin, Western Africa, licauvois. — The figure is not a 

 very satisfactory one, but resembles a narrow form of T. viuscoides. 



11. T. pusilUtm, Sw. ; caudex creeping tomentose, fronds 

 small erect crowded oblong or cuneate tapering into a short 

 stipes subbipinnalifido-lobate costate with oblicpie diciioto- 

 mous subpinnated veins, margins with stellated l)airs, involu- 

 cres cylindrical tapering 2-lipped half sunk in the apex of a 

 lobe, columella slightly exserted. — Hedw. Fil. cum Ic. Sw. 

 Sijn. Fil. p. 142. Wiild. Sp. PI. v. p. 499. Didymoglussum 

 pusillum, Desv. 



Hab. Jamaica, Sivartz. Trinidad, /.ocA-Ad)/. — Allied to T. inuscoidcs, 

 especially in the veining and reticulation; but it is smaller, narrower, with 

 a more tapering base, and with involucres which are half exserted. 



12. T. apodiint, Ilook. et Grev.; caudex creeping very to- 

 mentose, fronds minute sessile cordato-rotmulale decjily and 



