AND Multiplication in Erythronium 315 



Plate 17 



17. Bud of annual bulb (May), X i- 



18. Three sections of seed tissue, a, longitudinal, b, transverse of endosperm, 

 cells from raphe, containing scattered starch grains. 



19. Longitudinal section of seed, X ^5- 



20. Embryo in endosperm, X 5°- 



21. Starch grains from bulb, X 225. 



22. Successive steps in the liberation and orientation of the flower, X I- 



23. SeedUng, showing the starch-bearing regions, X I- 



Plate 18 



24. Surface buds on bulbs after the sprouts have been destroyed, X ^^ 



25. Life cycle of five years, showing the successive fomis assumed. 



26. Diagrammatic life cycle, showing multiplication of one seed in five years. 



27. Abnormal flower, petals, 7; stamens, 8; leaf, I (Fig. 28). 



28. Leaf of 27. 



29. Abnormal bulb, twhmcd by surface bud, X ^■ 



30. Annual bulb turned aside to show the relation of old and new growth. 



31. Mature bulb which has been three years in one place, rosettes of root fibers 

 indicate the age, X *• 



32. Stimulation growth of runner, X ^- 



