Because Wisqoq is so rare in Nova Scotia, it is very difficult to identify the tree and tell the difference between similar species. Wisqoq is often confused with White Ash which is very common throughout the province. This guide will provide a closer look at these two tree species and help see the differences.
LeavesWisqoq has a compound leaf measuring 10-14 inches from the tip of the leaf to the end of the stalk. Each leaf consists of 9-11 leaflets positioned directly opposite each other on the leaf stem. Wisqoq leaflets are stalk less. In contrast, white Ash leaflets are joined to the leaf stem by a short stalk. When you look up at the tree you can see the visible stalk clearly against the sky. Wisqoq leaflets are 3-5 inches long and have a tiny saw tooth outer edge (margin). Wisqoq leaflets are long and slender in comparison to other ash species and are usually dark green on both top and bottom. Dense tufts of rusty brown hair are found on the underside of the leaflet where the leaflets join the stem.
TwigsThe twigs of Wisqoq are straight and thick, light grey in colour, and are smooth, but dull in texture. Twigs are located directly opposite each other on the branches of the tree. The end bud (terminal bud) is dark brown or black and is sharply pointed, and usually separated from side buds with bark visible between. This feature distinguishes it from White Ash. (White Ash end buds and side buds have no gap). Leaf scars, that are left where the tree shed its leaves, have a rounded bottom and are flat on the top. The bark of the twig has small raised white spots (lenticels).
ID Field Guide
|Identifier||Black Ash||White Ash|
|Leaves||9-11 leaflets||7 leaflets|
|Leaflets||Stockless with tufts of hair at joints
Long and slender
Margin is saw toothed.
Dark green on both top and underside.
|Clearly visible stocks connecting the leaflet to the stem.
Leaflets are more rounded, oval shaped.
Edges are smooth or with sparse rounded teeth.
Leaflets are dark green with a pale green underside.
|Twigs||Light grey||Light brown|
|End Buds||Separate from side buds – black, sharp pointed||Tight to side buds
Dark brown, wide and rounded
|Bark||Soft and corky when young becoming scaly
Light grey with dark furrows
|Smooth when young
Diamond shape furrows when older
Grey in color