THE STUDY OF THE EVOLUTION OF THE FLOWER. 



271 



Text-fisr. 7. 



Diagrams showing the course of the vascular tissue in the female flower of Aucuha ; A-H, unioTulate 



ovary -, I-L, biovalate ovary. (For abbreviations see p. 308.) 



SECOXl) SERIES. — BOTANF, VOL. VIII. 



2s 



