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IDENTIFYING DECIDUOUS WOODY PLANTS IN WINTER

Rosie Lerner,Purdue Extension Consumer Horticulture Specialist

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Terminal Bud: The bud formed at the tip of the twig

False Terminal Bud: A lateral bud that assumes the function of the terminal bud. When the growing tip withers or falls away, the closest lateral bud to the twig tip substitutes as a terminal bud

Bud Scales: Small scale-like structures that are modified leaves covering the bud during its winter dormancy

Lateral Bud: The buds formed on the side of a twig, not the bud at the end of the twig

Leaf Scar: A scar left on the twig when the leaf falls

Vascular Bundle Scars: A small mark on a leaf scar indicating a point where a vein from the leaf was once connected with the stem

Lenticel: A small corky area or speck serving as a breathing pore

Catkin: A dense, cylindrical, often drooping cluster of flowers

Note the part of the branch from last year’s growth that extends beyond the base of the bud.

Glossary

LEAF Winter Tree ID Key ©2014 www.leafprogram.org

Winter Tree Identification KeyTerminal Bud

Vascular Bundle Scar

Lateral Bud

Leaf Scar

Lenticel

False Terminal Bud

Note the part of the branch from last year’s growth that extends beyond the base of the bud. This helps you determine whether a bud is a false terminal bud. It may be very noticeable or may be difficult to see without a hand lens.

Bud Scales

START HERE

1. Leaf scars opposite...Got to 2 OR 1. Leaf scars alternate...Go to 3

NEXT

KEY TO TERMS

LEAF Winter Tree ID Key ©2014 www.leafprogram.org

https://www.uwsp.edu/cnr-ap/leaf/Documents/LEAFWinterTreeIDKey.pdf

• Vegetative• Floral

Magnolia

BudsBuds

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Fragrant Sumac

VegetativeFloral

Tuliptree

Vegetative

Floral

Flowering Dogwood

Vegetative

Floral

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KoreanspiceViburnum

BurkwoodViburnum

Sugar Maple

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English Oak

Beech

• Buds• Vegetative• Floral

Linden

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Sycamore

Horsechestnut

Redbud

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Ginkgo

Note spurs

Leaf Scars

Ash Leaf Scar

Black Walnut English Walnut

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Lenticels

Birch

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Sargent Cherry

ResourcesHelpful Books ~ $23 each

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https://mlp.arboretum.purdue.edu/ecmweb/findPlant.php

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Support the Purdue University brand in your presentations by using a brand-friendly template. This template uses an accessible master layout. Please note that some changes to the PowerPoint template could impact accessibility by those with disabilities. Follow the instructions provided by Microsoft Office to ensure that your PowerPoint presentations are accessible to all users:

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http://dendro.cnre.vt.edu/dendrology/vtree.htm

http://dendro.cnre.vt.edu/dendrology/vtree.htm

THANK YOU!

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