Morphological Notes, 
BY 
Sir W. T. THISELTON-DYER, K.C.M.G., C.I.E., F.R.S., 
Directory Royal Botanic Gardensy Kew. 
With Plate XXII. 
* 
I T frequently happens that interesting specimens come 
under notice, in a large botanical establishment like Kew, 
which hardly attract the attention they deserve when relegated 
to their places in a vast museum collection. Yet, though 
they rarely afford the bases for any extended research, they 
deserve detailed notice as they often illustrate important 
theoretical points, and may be useful to teachers for lecture 
illustrations. 
I propose therefore, from time to time, to put such specimens 
on record in these notes, contenting myself in most cases with 
necessary but brief descriptions. 
i. Persistence of Leaf-traces. 
The outward extension of leaf-traces is limited by the 
fall of the leaves to which they belong. It is not, however, 
apparently generally known that when the leaves are more 
or less persistent the leaf-traces are continued to them through 
successive annual zones of wood. This has already been 
described in detail by Dr. Oskar Markfeldt in ‘ Flora 5 for 
1885 (pp. 33, 81, and 99): — ‘ Ueber das Verhalten der 
Blattspurstrange immergriiner Pflanzen beim Dickenwachs- 
thum des Stammes oder Zweiges.’ 
[Annals of Botany, Vol. XV. No. LVIII. June, 1901.] 
