OF DENISON UNIVERSITY. 
35 
the first bud. At either side of the tendril, representing its branches, 
.is a flower. Above the tendril is found a bud, the undeveloped su- 
perposed branch. 
(In a curious specimen of Ulnius fulva (n), found near Dayton, 
there were two leaf scars, the places of attachment of two leaves, 
which supported but one bud, the normal arrangement of the remain- 
der of the branch being otherwise preserved. ) 
EXPLANATION OF PLATES. 
Plate XII 
Superposed Buds In — 
Fig. I. Fraxinus Americana, L., from a one year old shoot growing out of 
the stump of a tree cut down during the previous year. 
Fig. 2. Cary a alba, Nutt., the tip of a branch. 
• Fig. 3. Cary a olivaeformis, Nutt., section of a node taken from the upper 
part of a twig. 
Fig. 4. Cornus stolonifera, Michx., A, section of a node showing the con- 
tents of only one leaf axil. Twig collected in autumn, showing one of the su- 
perposed buds partly developed. B, diagram of buds as they appear in less 
vigorous axils. 
Fig. 5. Lindera Benzoin, Meisn., superposed branches composed in each 
case of a terminal leaf-bud, and two lateral flower-buds. 
Fig. 6. Gymnocladus Canadensis, Lam., buds enclosed in pit-holes. 
Fig. 7. Lonicera Tartarica, L. 
Fig. 8. Aristolochia Sipho, D Her., a regular leaf-branch represents the first 
formed bud of last year ; the flower, the second bud. B, diagramatic section, 
showing the buds still undeveloped. 
Fig. 9. Dicentra Cucullaria, DC., A, section of a grain. B, slightly en- 
larged portion of the same, both sections magnified. 
Fig. 10. Chelidonium majus, L., A, the main axis is here turned into an 
umbel of flowers, the first developed bud is in the same case, the second bud is a 
leaf-branch, the third is still in the bud state. B and C, diagrams showing the 
relative insertion of branches and leaves. D, a case of superposition with two of 
the buds developed into leaf-branches. 
Fig. II. ( Ulmus fulva, Michx. , a freak of nature, two leaves subtending one 
bud.) 
Fig. 12. By mistake marked 2 in the lower part of the plate. Verbena 
stricta, Vent. 
