When reading descriptions of plants, often in the process of trying to identify a species, we will often come across terms like "terete" leaves, or "oblanceolate" petals.
What in the world does that mean????
Believe it or not, there is a whole standard for plant symmetry descriptors, based upon dimensional mathematical ratios and the surrounding forms, for both planar (2-dimensional) and solid shapes. The folks at the Fairchild Botanical Garden have put together really nice tables to help us understand them. I have links to both on my Free Information page
HERE.
Plant Segment Descriptors
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