144 Moore : The study of winter buds 



Plate 9 



X-6. Liriodendron Ttilipifera 



T. Median longitudinal section of bud with two outer leaves removed. November, 



2. Vegetative point during rest period. 29 D, 



3, 4. Greater convexity of vegetative point and crowding of parts. 30 Ja, 28 F. 



5. A general elongation of axis, of leaf, and of scale fundaments. 30 Mr. 



6. Bud two weeks later than in preceding figure. Marked increase in size. 



16 Ap, 



7-14. Syringa vulgaris 



7. Appearance of vegetative point during winter rest period. 25 N. 



8. Median longitudinal section showing appearance of axis during winter. 

 January. 



9. Appearance of vegetative point in winter. 30 Ja. 



10. Elongation of leaf fundaments. 28 F. 



11. Stretching of parts and addition of upper axillary buds. 30 Mr. 



12. 13, Two stages of vegetative point on April 16. 

 14. Axillary bud. 5 My. 



15 and 16. Fagus americana 



terminal bud during 



-winter. November, March. 



16. Same, showing increase in size, 16 Ap. 



I7-'9- Ulnitis afuericana 



17. General appearance of vegetative point during winter. November. 



18. Greater convexity of vegetative point. 30 Ja. 



19. General growth of meristematic region. 16 Ap, 



, 20-24 . Salix fragilis 



20. Winter condition of vegetative point. November, December. 



21. 22. Greater convexity of vegetative point. 30 Ja, 28 F. 



23. General stretching of meristematic region. 30 Mr. 



24. Additional growth of new organs. 16 Ap. 



25 and 26, Tilia vulgaris 



25. Winter condition of vegetative point. February. 



26. Greater breadth at vegetative point. March. 



27 . Betula populifolia 



^ - 



Appearance of apical part of bud in winter and spring. November, April. 



28 and 2g. Popdus iremuloides 



28. Winter condition of apical region. November, March. 



29. General stretching and growth of meristematic region. 16 Ap. 



PLATE 10. 



30-33. Acer piatanoides 



30. Appearance during rest period. November, December. 



31. General stretching of parts in meristematic region. January, February- 



32. Appearance of scale fundament and upper axillary bud. 30 Mr. 



33. General growth of parts and appearance of future terminal bud. 16 Ap 



*i 



