528 
CHRISTINE E. QUINLAN ON 
14. Anastomosis at the nodes. 
At the node the vascular system is complicated. In all species there are trans- 
verse strands uniting the peripheral bundles on the flanks. The median foliar bundle 
at the base of the petiole gives off lateral strands which unite with the lateral foliar 
bundles. The peripheral bundles give off a minute branch which enters the axillary 
buds, in all species except C. fertilis, in which it appears at a later stage of 
development. 
15. Peculiarity of leaf- trace entry. 
The vascular ring of the axis opens to admit the median foliar bundle, while the 
lateral foliars unite with the nearest peripheral bundles. Each of the axillary buds 
possesses a vascular ring, which divides into two crescentic masses. The crescents 
belonging to the outer bud fuse laterally with the respective crescents of the inner 
bud. In Calycanthus, each set unites with the arc of the median foliar bundle, before 
its insertion into the ring of the central stele ; in Chimonanthus, they unite laterally 
with the central vascular tissue on each side of the gap, separating on the outer side 
to admit the median foliar bundle. 
16. Inversion of the lateral foliar bundles at the node. 
On entering the mother axis at the node, the lateral foliar bundles, when fusing 
with the peripheral bundles, become inversely orientated. This change in orientation 
takes place also in the lateral strands given off by the median foliar bundle. 
17. Anastomosis in the floral axis. 
In C. fertilis and C. floridus, each floral segment, except the carpels, receives 
from the central vascular ring a median strand, and from the peripheral ring, two 
smaller lateral cords. The median cord gives off two branches which join the lateral 
cords ; in C. fertilis, there is also anastomosis between the lateral cords. The carpels 
receive branches from the central cylinder and not from the peripheral ring. 
I should like to express my thanks to Professor P. J. Harvey-Gibson, C.B.E., of 
Liverpool University, at whose suggestion the work was undertaken, for his constant 
help and advice ; to Professors B. E. Duke and Hartog of University College, Cork, 
and also to Professor H. H. Dixon, F.R.S., and Sir Frederick Moore, for supplies 
of material. 
BIBLIOGRAPHY. 
(1) Mirbel, Ann. des Sciences Nat., t. xiv, ser. 1, 1828. 
(2) Gatjdichaud, Arch, de Bot., t. ii, 1833. 
(3) Lindley, Nat. Syst. of Bot., 1836 ; and Vegetable Kingdom. 
(4) Treviranus, Bot. Zeit., 1847. 
(5) Henfrey, Ann. of Nat. Hist , vol. i, ser. 2. 
(6) Woronin, Bot. Zeit., 1860. 
