Morphological Notes. 
BY 
Sir W. T. THISELTON-DYER, K.C.M.G., C.I.E., F.R.S. 
Director , Royal Botanic Gardens , Kew. 
With Plate XXX. 
II. Persistence of Leaf-traces in Araucarieae. 
HEN I wrote the note in the last number of the 
V V Annals of Botany, I was under the impression that 
the persistence of leaf-traces was a wood-structure confined 
to the species of Araucaria. It now proves to be possessed 
by other genera belonging to the Araucarieae. 
I had repeatedly examined a large slab of the wood of 
Kauri Pine ( Agathis australis ) in the timber museum at Kew 
without detecting any trace of the structure. I was therefore 
surprised to notice it as conspicuous as in Araucaria in 
planks of Kauri Pine which I recently examined in the 
Botanical Institute of the University of Glasgow. I now find 
it equally so in a hand specimen of the same wood in our 
museums presented by the Admiralty. It is scarcely less 
obvious in a specimen of the wood of Agathis robusta. 
It is also beautifully conspicuous in the early annual zones 
in the wood of Cunninghamia sinensis . In this the leaf-traces 
certainly persist for some years, but the dimensions of the 
specimen do not enable me to say to what extent. 
[Annals of Botany, Vol. XV. No. LIX. September, 1901.] 
