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: Pith Features

the medial or central portion of a twig that is usually of a different color and texture

Chambered Pith the pith is divided into empty chambers sectioned by cross partitions
Diaphragmed Pith the pith is divided into solid chambers sectioned by distinct cross partitions

 

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Chambered Pith

the pith is divided into empty chambers sectioned by cross partitions

  • Grossulariaceae Itea virginica - Virginia sweetspire: Twig showing alternate leaf arrangement, chambered pith.
  • Juglandaceae Juglans nigra - black walnut: Twig showing alternate leaf arrangement, large 'monkey-face' leaf scars, and chambered chocolate colored pith.
  • Symplocaceae Symplocos tinctoria - common sweetleaf: Twig showing alternate leaf arrangement, clustered terminal buds, and chambered pith.

 

Diaphragmed Pith

the pith is divided into solid chambers sectioned by distinct cross partitions

  • Cornaceae Nyssa sylvatica - blackgum: Twig showing alternate leaf arrangement, pith sometimes diaphragmed at the nodes.

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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