Abstract
A modification of the Zimmermann and Jeje (1981) latex paint infusion technique was utilized to determine vessel length distributions in N. fusca (Hook.f.) Oerst., N. menziesii (Hook.f.) Oerst. and N. solandri var. cliffortioides (Hock.f.) Poole. In all thirty trees examined, the majority of vessels were less than 2 cm long; with 97% of the vessels shorter than 6 cm in N. menziesii and N. solandri, with the same percentage being shorter than 8 cm in N. fusca. The longest individual vessels recorded were 24 cm for N. menziesii, 22 cm for N. solandri and 33 cm for N. fusca. The longest vessels in all three species occurred in the earlywood and also exhibited the largest diameters.
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