Walnut clusters

Figure 4.8 Walnut clusters an illustration from nature of the packing of spherelike objects. (Reproduced with permission from In Our Image Personal Symmetry in Discovery, 1999, 1. Hargittai and M. Hargattai, Kluwer, New York.)...

Figure 3-44. (a) Walnut clusters. Photographs by the authors, (b) Chestnut clusters. Photograph... 

Another beautiful analogy with the VSEPR model, and one found directly in nature, is demonstrated in Figure 3-37. These are hardshell fruits growing together. The small clusters of walnuts, e.g., have exactly the same arrangements for two, three, four, and five walnuts in assemblies as predicted by the VSEPR model or as those shown by the balloons. The walnuts—when they grow close to each other—are... 

IV. Order Juglandales.—Juglandace e.—A family of apetalous exogenous trees—the walnut family—with alternate odd-pinnate leaves and monoecious flowers, the sterile in catkins, the fertile solitary or in a small cluster or spike. The fruit is a dry drupe with Digitized by Microsoft (S)... 

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