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Science 24 February 1978:
Vol. 199. no. 4331, pp. 888 - 890
DOI: 10.1126/science.199.4331.888
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Articles

Tree Branch Angle: Maximizing Effective Leaf Area

HISAO HONDA 1 and JACK B. FISHER 2

1 Kanebo Institute for Cancer Research, Misakicho 1-9-1, Hyogo-ku, Kobe 652, Japan
2 Fairchild Tropical Garden, Miami, Florida 33156

In a computer simulation of branching pattern and leaf cluster in Terminalia catappa, right and left branch angles were varied, and the effective leaf surface areas were calculated. Theoretical branch angles that result in maximum effective leaf area are close to the values observed in nature.

Submitted on September 29, 1977
Revised on November 8, 1977


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