30 Things You Might Notice about a Twig
Twig color?
Twig size (thickness): slender, thick, or in between?
Twig straight or zigzagged?
Twig round or angular?
Twig ridged or winged?
Twig pubescent?
Twig scent or taste?
Thorns, spines, or prickles present?
Pith color?
Pith shape?
Pith continuity (continuous, diaphragmed, chambered, hollow)?
Buds opposite, alternate, or whorled?
Bud scale pattern?
Bud color(s)?
Bud size (terminal and lateral)?
Bud shape?
Bud angle from stem?
Bud resinous or glandular?
Bud smooth, pubescent, villous, or tomentose?
Terminal bud present or absent?
Superposed buds present or absent?
Leaf scar size?
Leaf scar shape?
Number of vascular bundles?
Arrangement of vascular bundles?
Stipule scars present or absent?
Stipule scars size and extent?
Lenticel color?
Lenticel size?
Lenticel shape?
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