
%0 Journal Article
%A Legge, NJ 
%T Anatomical Aspects of Water Movement Through Stems of Mountain Ash (<I>Eucalyptus regnans</I> F. Muell.)
%J Australian Journal of Botany
%D 1985/06/01
%V 33
%N 3
%P 287-298
%K 
%R https://doi.org/10.1071/BT9850287
%U https://www.publish.csiro.au/paper/BT9850287 
%X Introduction of a stain through the severed roots of Eucalyptus regnans of two age classes showed that a spiral interlocked sap ascent pattern in young trees tended towards a vertical sectorial pattern by age 40 years. Microscopic examination of the stained wood suggests that intercellular water movement occurs principally via the pits. Serial transverse sections of wood from a young tree showed a limited degree of intervessel contact, with a network coefficient of 13.7 contacts m-1 and approx. 0.9% of vessel surface area in contact with other vessels. Analysis of the frequency of vessel endings indicates an average vessel length of approx. 1.8 m. Trunk segments of 40-year-old trees had relative conductivities of approx. 3.3 x 10-11 m2, while small lateral roots had values up to 10 times greater. 
