570 



MARSILEACEiE. 



central grume, and the inner surface of the 

 capsule are young trifacials, (abortive spores.) 

 PI. £XXVI. f, 1,4. Another secondary of the same capsule ra- 

 ther more advanced. 



„ f. I.,7. Another, still more advanced. 



„ f. I.,c. The central cell, young (subsequently yellow,) 

 sac detached ; trilineally marked surface. 



„ f. I.,9. Portion of the grumous contents of f. I.,7. 



shewing parent cells developing, and fully 

 fo rmed, and two young spores. 



„ f. I., 10. Confervoid filaments attached to the outside 

 of the capsule of CXXVI, I.,7. ; about 

 500 times. 



PI. CXXVIII.f. IV.,1. A young secondary still more advanced, 

 but with the central cell abortive, appear- 

 ing in its original state of a grumous con- 

 densation or nucleus. 

 „ f. IV. .3, 3. Parent cells squeezed out of the grume of 



the same secondary capsule. 

 „ f. I. ,2. Another secondary capsule still more deve- 

 loped : central cell (subsequently yellow) 

 sac much more developed ; the surround- 

 ing grume much diminished. 

 „ i . I.,5,6, Part of the more fluid grumous contents of 

 the same : 6 represents what appears to be 

 trifacials just separating : this was only 

 observed^ once. 



PI. XXVIII. f. L,3. Central sac of f. L,2. 



PI. CX2TVIII, f. IV.,5. Another secondray capsule rather more ad- 

 vanced, the central sac now commences to 

 assume a yellowish tint. 



PI. CXXVIII. f. II., 17 Another more advanced, shews the mam- 

 milla in the vertex of the central (yellowish) 

 sac, appearing to pass off into a thin gru- 

 mous lining of the cavity of the sac. 



PI. CXXVIII. f. II.,18. Sac of the same; trilineally marked face. 



PI. CXXIV. f, III., 1. Another more advanced: perhaps reprents 

 the development of the three lobes sub- 



