Updated Atomic Structure Map

Reviewing lists of edible and inedible squashes and gourds reveals a fine tuning for the atomic structure map for the periodic table of gourds.  In the lower left corner, there was initially an indication of what the resulting purpose of the squash/gourd was supposed to be: food or decoration. In fact, the Organic Authority makes a clear statement of the difference between squashes and gourds: "Typically, the edible plants under this family are referred to as squash, and the ornamental (i.e. hard-shelled, inedible, and generally un-tasty) plants are referred to as gourds."

Since then, additional information suggests the purpose indication should be expanded to include ornamentation.  Art or utility decoration is the result of physically changing the gourd to be art or a tool of usefulness, whereas ornamentation is an existence where the squash or gourd is a table centerpiece or an autumn arrangement on a porch and then discarded.

The indications would be F (food) aD or uD (art decoration or utility decoration) and O (ornamental). A gourd can sometimes be one or another, or all three.  Hopefully, the fine tuning will make the distinctions clearer.