van 



Plate 

 xvii. butomus umbellatus. 



XVIII. 

 XIX. 



u\.u. 



91 >' 



A.LISMA PLANTAGO. 



XXT. Anemone japonica and Lupixus ye- 



NUSTA. 



XXII. CEnothera biennis and Pyrethrum 



balsaminatum. 

 XXIII. Pyrethrum balsaminatum. 



XXIV. 



»> 



?> 



and An- 



THEMIS TINCTORIA. 



XXV. ANTHEMIS TINCTORIA, VERBA3CUM 



phlomoides, and Lobelia syphi- 

 litica. 



Illustrating the minute 

 structure and deve- 

 lopment of the ovule 

 and embryo - sac of 

 r A ngio sperms, accord- 

 ing to the researches 

 of Mr. H. Marshall 



i 



Ward. 



ERRATUM. 



lu Plate XVI., and description of same, p. 390, for " Betula ear alt at a 



read u Betula exalata. 



H 



