Calyx, corolla, and all that? It’s just the plant’s ID card, like reading a ration card. You count the sepals, petals, stamens, and pistils and write it as a code, like Br for Brinjal. My life says the book answer is useless if you can't see it on a real plant. I learned formulas only after my failed tomato flowers made me check if they were complete or incomplete—turns out, hope and watering aren't enough, da.
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