Abstract
Eighty-seven Picea and Larix samples from thirty-nine species were examined microscopically to confirm an accurate method of genus separation. The proportions and type of ray tracheid bordered pits as described by Bartholin (1979) were the only wood anatomical feature to correctly identify all specimens. Picea subgroups closely followed those previously defined by the presence or absence of spiral thickenings in the longitudinal tra-cheids and ray tracheids. No Larix subgroups were evident.