TAB. XI. 



TRICHOMANES ALATUM 



FILICES. — Gyrat^. Br. 



Polypodiaceje. Kaulf. Filices verae. Willd. 



Gen. Char. 



TRICHOMANES, Sm. Sori marginales. Capsulm sessiles, receptaculo com- 

 muni cylindraceo insertse, intra Involucrum monophyllum, suburceolatum, ore hiante, textura 

 frondis. Br. 



Trichomanes alatum ; pilosiusculum, frondibus bipinnatifidis, pinnis lanceolatis acuminatis, laciniis 



lanceolatis inciso-serratis, stipite (superne) rachique alatis. 



3. p. 1732. Syn. Fil. p. 143 



Trichomanes alatum. Swartz. Fl. Ind. Occ. v. 



k 



v. b.p. 506. (non Hook. in Fl. Lond.) 

 Filicula tota translucens. Plum. Fil. t. 50./. D. (vix bona.) 



Hab. In montibus excelsis Jamaicae australis, alibique in India Occidentali. Swartz 

 niola, et in Antillis minoribus. Willd. Insula Sanctse Vincentii. Rev 



Caudex repens. 



Radix e fibris plurimis longis nigricantibus vix tomentosis. 



Sp. Pl 



Hispa 





Stipes 3 — 4-pollicaris, gracilis superne, e fronde utrinque decurrente, alatus, primum hirsutus, demum glaber. 

 Frondes translucentes ovato-lanceolatae, apice attenuatse, bipinnatifidae ; pinnis vel segmentis primariis lanceolatis 



attenuatis, laciniis lanceolatis, acutis, inciso-serratis, omnibus nervosis, sub lente pulcherrime reticulatis, nervis 



margine pilosis, pilis raris nunc furcatis. Rachis alatus, plerumque pilosus. 

 Indusia urceolata, dentibus laciniarum immersa, ore aperto truncato. 

 Receptaculum indusio triplo quadruplo longius, ad basin capsulis tectum. 

 Semina globosa. 



Fig. 1. Frondis laciniae duae. f. 2. Indusium verticaliter sectum. f. 3. Portio receptaculi cum capsulis duabus. 



f. 4. Capsula. f. 5. Semina : — magn. auct. 



Excellent, in almost every.respect, as is the description that Dr. Swartz has given us of this plant, 



yet, probably in consequence of the indifferent figure referred to in Plumier, it has had the misfor- 

 tune of being little understood ; the Trichomanes lucens having generally been sent to us by the 



name of alatum 



larger and much finer plant, as will be seen by our fi 



This must not be confounded with the Trichomanes alatum * of Hook. in Fl. Lond. (the Hymeno- 

 phyllum alatum of Engl. Bot.) On referring that species to its proper genus, the old specific name 

 was retained, without recollecting that it was preoccupied. It should now be called, after Smith 



- 



in Rees's Cyclopaedia, T. europcmm. 



Our finest specimens of the true T. alatum are from the Rev. Lansdown Guilding. 



* The two species are nevertheless very nearly allied. The European plant is much more divided, so as to be 3 — 4 pinnatifid, 

 the ultimate segments never serrated. 



