167 
off of the tips of branches would be much more common after that 
date. 
Description of Plates CXLVII. and CXLVIII. 
Fig. 1. Joxylon pomiferum; with a tounded protuberance at the side of the 
bud. : 
Fig. 2, Cercis Canadensis ; with superposed buds in the last axil. 
Fig. 3. Rodinia Pseudacacia ; with the tip destined to be cast off still in posi- 
tion, but with the future plane of separation already indicated; at @ is the upper one 
of the series of superposed buds, destined to be cast off, and to leave a small protuber- 
ance as at 4, 
Fig. 4. Morus rubra; with magnified view of the terminal scar, with a de- 
pressed centre. 
Fig. §. Zilia Americana. 
Fig. 6. Gleditschia triacanthos; at a, is the upper one of the series of superposed 
buds destined to be cast off, as at 4; the remaining buds of the series are usually all 
sub-petiolar ; in the axil of the last remaining leaf, the figure shows the next lower bud, 
just peeping from beneath the base of the petiole; an upper view of this portion of the 
branch, somewhat enlarged, isadded. The thorn is the equivalent of the upper super- 
posed bud which usually drops off before the close of August. 
Fig. 7. Gymnocladus dioica; with only the uppermost of the superposed buds 
of the last remaining axil visible in the figure. 
Fig. 8. Ulmus fulva. 
Fig. 9. Platanus occidentalis: two figures; the upper one still retaining the 
shriveled up tip of the branch, with the enclosing stipules belonging to the last re- 
maining leaf. In the lower figure these have been cast off. 
Fig. 10. Ulmus Americana. oe 
Fig. 11. Celtis occideptalis; the upper-axillary bud strongly recurved, a distin- 
tinguishing feature of this genus. : 
Fig. 12. Staphylea trifolia; showing the stipules belonging to the upper pair of 
remaining leaves; also a magnifled end view of the terminal scar. 
Fig. 13. Salix. 
Fig. 14. -£sculus glabra; when the end of the twig does not fall away, and 
when there has been no flower cluster, a scaly bud terminates the stem. 
~~ Fig. 15. Corylus Americana; with a drawing of the small tip which has been 
cast off. 
Fig. 16. Ostrya Virginica. 
Fig. 17. Carpinus Virginiana. 
Fig : ph iat two figures. The Seiich in most cases is termi- 
nated by a flowering catkin destined to blossom next year. : 
Fig. 19. Prunus Americana. 
Fig. 20. Prelea trifoliata, 
Fig. 21 Rhus gan The branches are often terminated by. the remnants of : 
last season’s flower clusters. 
Fig. 22, Lonicera flava, with the shriveled up ee of thie branch th adhering. 
