1896. } Briefer Articdes. 7 167 
sory buds are present, the axillary bud is removed a short distance 
above the axil of the leaf and a single accessory bud is situated in the 
axil. This is distinctly seen in Amorpha fruticosa L. and Cercis Cana- 
densis L. In the honey locust (Gleditschia triacanthus L.) the thorns 
are somewhat removed from the axils and a small bud is situated in 
the axil of the leaf. It is thus evident that the thorns arise from the 
true axillary buds and the small bud in the axil of the leaf is an acces- 
d. 
In Vitacez is found another very striking proof that accessory buds 
are not anomalous in character but are axillary to the bud-scales or 
the undeveloped leaves in the bud. Here a glance at any of the buds 
will show a single accessory bud with the apex just apparent above the 
outer bud-scale. This is best seen in Ampelopsis quinguefolia Mx. No 
one would, from a superficial examination, suppose more than this one 
accessory bud to exist, but by sectioning the bud one and frequently 
- other such buds may be seen in different stages of development 
ig. 10). 
August F. Foerste has observed! a tendency of certain abnormal con- 
ditions to recur at more or less regular intervals in a specimen of elm 
studied by him. Much greater regularity is shown in the recurrence 
of definite nodal characters in Ampelopsis. The repeated series con- 
“sts of three nodes beginning with the third node from the axis from 
Which any ramial division in question arises. At the first node of this 
series we observe on one side the stem nothing but the leaf-scar, on 
Oe Opposite side the remains of a tendril, a flower-cluster, or the scar 
left by the falling of one or the other of these. The second node of 
the series is frequently precisely similar to the first but on vigorous 
Mranches usually presents a compound bud in the axil of the leaf- 
“at. At the third node of the series there is no scar or organ opposite 
™ leaf-scar while in its axil is a strong axillary bud with its accesso- 
nes wel] developed. 
There seems to be a gradual increase of power from the first to the 
os node of the series, At the first node the terminal bud produces 
piher atendril or a flower-cluster which becomes opposed to the leaf 
by the development of the axillary bud into the succeeding internode 
8 axis, and the accessory bud fails to appear. At the second 
my Sufficient power may have developed to pro 
aty bud except j ent. 
€pt in the degree of developm hey are not as far ad- 
th ; 
© tWo or three accessory buds within but t 
1 : 
Botanical Gazette 19: 463. 1894. 
