364 The Ohio Journal of Science [Vol. XVI, No. 8, 



EXPLANATION OF PLATE XXVIL 



Fig. L The conventional signs used to represent the ordinary flower parts. 



a. Carpel. 



b. Vestigial carpel. 



c. Axis of inflorescence. 



d. Stamen. 



e. Vestigial stamen. 



f. United carpels, plurilocular ovulary. 



g. Unilocular ovulary with three carpels, 

 h. Sepal. 



i. Petal. 



j. Petal with nectar cup. 



Fig. 2. Diagram of carpellate cone of Tsuga canadensis, with three spirals. 



Fig. .3. Diagram of carpellate cone of Sequoia washingtoniana, with five spirals, 

 only one traced out. 



Fig. 4. Diagram of hypogynous flower of Yucca filamentosa. 



Fig. 0. Diagram of perigynous flower of Lathyrus odoratus. 



Fig. 6. Diagram of perigynous flower of Malus malus, with adnate hypanthium. 



Fig. 7. Diagram of epigynous flower of Fuchsia, with epigynous hypanthium. 



Fig. 8. Diagram of epigynous flower of Houstonia ciliotata. 



Ohio State University. 



