AZOLLA AND SALVINIA. 



563 



others. M. Vaucher, seems to have been unaware of the 

 existence of any other organs : although the indifinite mass- 

 containing secondary capsules appear to be represented by the 

 right hand figure of f. 3. The circumstance that fixes the ger- 

 mination to have been observed in these particular secondary 

 capsules, (otherwise it would be an open question,) is the ex- 

 planation of fig. 5, and this figure itself. For the teeth there 

 mentioned and depicted only exist in these particular secon- 

 dary capsules. But there is nothing to fix the exact nature 

 of the three teeth, which may either be those of the incrus- 

 tation as is most probable, or the interlinear spaces of the 

 vertex of the yellow sac. 



The accompanying table will shew the opinions regarding 

 the locus naturalis of the family composed of these two ge- 

 nera. I consider the association of these plants in a tribe 

 with Isoeteae and Lycopodineas to be untenable.* The clas- 

 sification of Reichenbach is remarkable. 



1804, 



mo, 



1814, 

 1828, 

 1830, 

 1831, 

 1836, 



Lamark. 



Brown. 



lleieUeubach. 

 Bartling. 

 Sprengel. 

 Liudley. 



1836, Endlicher. 



Naiades. 



Marsileaccaj, (Ithizosper 



M, lloth, D. 0.* 



(ord. nat.) 

 Musci. Uongjlobrya 



(Formatio.) 

 Rhizocarpa;, Batsch, 



(class ) 

 Uuizospermac, D. 0. 



Lyeopodales. (alliance. 



Hydropteiides (class.) 



Pilulavia, 

 Azolla. 



Marsilca, Salviuia, 



llieciyo, Salviniaeesc. 



Salviniaceai, Marsileacese, Isoeteic. 



Marsilea, Pilularia, Salviaia, Azol- 

 la, Isoetes. 



Lycopodinea; (including Isoetes,) 

 Marsileacea;, Salviniacoac. 



Salviniacea), Marsileaccce, 



* De candolle does not include Isoeteae in his Rhizospermeoc. See Fl. Fiance, 3, p, 

 j77-579. 



Aublet places Salvinia in the Liunean Crypto^ami* A'?™ 



