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GINKGO BILOBA: Morphology

1. Trunk   2. Branches 3. Foliage

1. Trunk

   A Ginkgo biloba tree can reach 30 or 40 meters  height and a spread of 8 meters. The trunk can become about 3 or 4 meters wide in diameter. It is straight columnar and sparingly branched. Young trees have usually a central trunk, pyramidal in shape, with regular, lateral, ascending, asymmetrical branching . The bark is brown and rough. It fissures rough furrows with the age.

The male tree usually has a slim column form and is slightly longer, the female tree has a wider crown and a more spread out form.

 

Male tree Female tree
round and squat tree fastigiate tree
small and pointed burgeon big and rounded burgeon
budding more early (15 days to 3 weeks)

.

leaves fall more early ( 2 to 3 weeks)

 

2. Branches

   The Ginkgo biloba tree has long and short branches growing at right angles. A short branch may become a long branch and the tip of a long branch may change into a short branch. That's why older trees may have a more irregular form. The leaves grow alternate on the long branches during spring. On the ends of short, lateral shoots they grow very slowly in clusters and produce a long shoot with scattered leaves after a number of years. 

3. Foliage

   The leaves of this tree are interesting and unique from any other tree. They are fan-shaped, leathery and smooth. They are often deeply grooved in the middle of the leaf, producing two distinct lobes, hence the name Ginkgo biloba (two lobes).  The leaves have a venation pattern that is open dichotomous; the veins fork in pairs from the base of the leaf, and are not cross-connected. They are bright green during the summer, turning gold before dropping in the fall. However, leaves fall quickly and the fall color show is short!

   

  More informations about Ginkgo tree....

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