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under bark See also over bark
Measurement of the diameter or circumference of a trunk or branch made with the bark removed.
A nursery-grown seedling that has had its taproot cut by passing a blade or wire through the seedbed a few centimetres below ground level. This process encourages the growth of lateral roots and is an alternative to transplanting as a means of obtaining sturdy planting stock with a well-branched root system. Often moved as balled roots.
A perennial plant with lower woody parts, but herbaceous upper parts that die back seasonally.
The portion of a tree in a forest stand below the overstorey.
A tree crop growing beneath the main canopy and forming a distinct lower storey. It is usually of coppice but can be of planted or naturally seeded trees.
undulate (of leaves)
With wavy margins.
With a single leaflet that has a stalk distinct from the stalk of the whole leaf.
unilocular (of ovaries)
Containing one chamber (locule) in which the ovules or seeds occur.
Arranged in a single row, series or layer, for example, perianth-segments.
unisexual (of flowers)
Of one sex.
An inflorescence in which all the pedicels arise at the apex of an axis. It is commonly compound, usually umbrella-shaped, and is characteristic of the plant family Umbelliferae
A small bladder-like, single-seeded dry fruit.
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