Basswood Leaf

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LEAVES | Complexity | Arrangement | Shape | Venation | Apices | Bases | Margins | Lobes

TWIGS | Bud Types | Bud Scales | Scars | Surface | Pith

FRUITS | Types

 

Twig Morphology: Scars

scars are useful marks for identification that remain on a twig once a part of the plant falls off

Leaf Scars the mark remaining at the point of attachment of a leaf following abscission
Vascular Bundle Scars small dots within a leaf scar that show where strands of vascular tissue passed from a twig to a leaf
Stipular Scars paired scars above and to either side of a leaf scar caused by abscission of the stipules
Bud Scale Scars marks left by terminal bud scales falling off when the terminal bud opens

 

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Leaf Scars

the mark remaining at the point of attachment of a leaf following abscission

  • Simaroubaceae Ailanthus altissima - tree of heaven: Twig, showin
  • Bignoniaceae Catalpa speciosa - northern catalpa: Twig showing w
  • Oleaceae Fraxinus americana - white ash: Twig showing opposite l
  • Juglandaceae Juglans nigra - black walnut: Twig showing alternat
  • Meliaceae Melia azedarach - Chinaberrytree: Branch showing lenti
  • Anacardiaceae Rhus glabra - smooth sumac: Twig showing alternate
  • Anacardiaceae Toxicodendron vernix - poison sumac: Twig (TOXIC)

 

Vascular Bundle Scars

small dots within a leaf scar that show where strands of vascular tissue passed from a twig to a leaf

  • Juglandaceae Carya alba - mockernut hickory: Twig showing altern
  • Anacardiaceae Toxicodendron vernix - poison sumac: Twig (TOXIC)
  • Cornaceae Nyssa sylvatica - blackgum: Twig showing alternate lea

 

Stipular Scars

paired scars above and to either side of a leaf scar caused by abscission of the stipules

  • Aceraceae Acer negundo- boxelder: Twig showing opposite leaf arr
  • Magnoliaceae Magnolia virginiana - sweetbay: Terminal bud, silve

 

Bud Scale Scars

marks left by terminal bud scales falling off when the terminal bud opens

  • Juglandaceae Carya ovata - shagbark hickory: Bark on tree < 1 in
  • Juglandaceae Carya alba - mockernut hickory: Twig showing altern
  • Magnoliaceae Liriodendron tulipifera - yellow-poplar: Twig showi
  • Cornaceae Nyssa aquatica - water tupelo: Twig showing alternate
  • Sapindaceae Sapindus saponaria - soapberry: Twig showing alterna

All definitions are from J. W. Hardin, D. J. Leopold, and F. M. White. (2001). Harlow & Harrar's Textbook of Dendrology. Ninth edition. McGraw Hill, New York, New York, 534 pp. ISBN: 0073661716.

LEAVES | Complexity | Arrangement | Shape | Venation | Apices | Bases | Margins | Lobes

TWIGS | Bud Types | Bud Scales | Scars | Surface | Pith

FRUITS | Types

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Site Statistics

Species: 207 | Genera: 122 | Families: 67

All Photos: 2063 | Leaf Photos: 622 | Twig Photos: 511 | Bark Photos: 353 | Fruit Photos: 274 | Photos per Species: 10.0

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