TAB. XV 



GLEICHENIA 



IMMERSA 



FILICES. 



GLEICHENEiE. Br., Kaulf. ScHISMATOPTERIDES. Willd 



Gen. Char. GLEICHENIA. 



dorsalibus saepius definitae. 



Capsula annulo completo striato subsessiles in soris rotundatis 



Indusium nullum. 



Frondes dichotomae vel furcatae. 



Gleichenia immersa ; fronde dichotoma ramosa 



4 



funde pinnatifidis, laciniis linearibus subtus 



pinnatifidis, soris minutis tomento immersis. Kaulf. 



gemma primaria prolifera, pinnis geminatis pro 

 costa utrinque ferrugineo-tomentosis, ramis semi 



Mertensia immersa 



Kaulf. Enum. Fil.p. 38 



Hab. In Brasiliae Insula St. Catharinae. Chamisso. 

 Ex insula Guadeloupe communicavit Cl. Torrey 



Insula Sancti Vincentii. Rev. L. Guilding 



Stipes repetitim dichotomus, primum pubescens, demum glaber, nitidus, fuscus, ex axillis proliferus, ramis ultimis 



(et antepenultimis, hinc) frondosi 

 Frondes geminato-furcatae, lanceol 



basi apiceque subattenuata? 



unciales ad sesquipedalem longae, supra 



glabne, subtus ferrugineo-tomentos^, profunde fere ad basin pinnatifid.e, segmentis linearibus horizontali 

 subfalcatis, marginibus omnino integerrimis. 





Rachis demum glabriuscul 

 Sori tomento ferrugineo immersi, e capsulis quatuor radiatim dispositis, sphsei 



subverticaliter lato annulatis demum e vertice dehiscentibus. 

 Semina oblongo-reniformia, parva. 

 Fig. 1 . Portio frondis ab inferiore parte visa. 



Costa pubescens. 

 fere omnino sessilibus, obliq 



/ 



f. 2. Ejusdem portio, cum 



abraso, cum soro capsulis duabus. f. 4. Capsulae. f. 5. Semina 



f. 3. Portio segmenti, tomento 



magn 



This seems to agree so well with the Mertensia 



immersa 



doubt of the two plants being the same 



of Kaulfuss. that 



we can have little 



boldt and Willdenow 



is possible that it may be the M. pubescens of Hum 



though that is said to be clothed beneath with white down 



M. bifida of the same author has many points in common with this 



Ag 



the 



Act. Holm. the branch immediately below the ultimate 

 this be the M. decurrens of Raddi ? 



but according to the figure 



one is pinnatifid on each side. May not 



