leaf scar


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Leaf scarclick for a larger image
Fig. 206 Leaf scar . Position on stem.

leaf scar

a scar left on a stem after leaf ABSCISSION. Visible on the scar is a number of smaller scars, each one marking the position at which a VASCULAR BUNDLE entered the petiole of the LEAF.
References in periodicals archive ?
The ligulate genus Lepidobothrodendron Daber 1959 differs from Bothrodendron in having faint cushion outlines enclosing a leaf scar, ligule pit and two external parichnos.
In winter, examine a twig for leaf scars - where the leaf has detached from the branch - and you will see perfectly formed horseshoe-shaped scars, complete with nail markings
It has gray to brown trunk and also have circular ring like leaf scars.
The book is divided up into five sections: leaves, flowers and cones, fruit and seeds, buds and leaf scars, and bark and twigs.
Isophasic parasitism is the sort of growth behavior in which the longitudinal growth of the endophyte keeps pace with the longitudinal extension of the parasitized host branch and, in every known case, develops its first external shoots in completely predictable locations, especially at leaf scars or even in its leaf axils (Kuijt, 1960).
Such books are helpful because they review the parts of the twig pictorially in their descriptions--lenticels, bud scales, leaf scars, vascular bundles, thorns, and much more.
Trunk up to 8 m high and 30 cm in diameter, bare and conspicuously marked with leaf scars, unarmed, covered in the upper part with leaf sheaths.
stems have leaves or leaf scars and axillary buds or branches) students can interpret more modified forms (e.
At that time, one must rely on minute details of buds or leaf scars, minor bark characteristics, and other clues.