Epithets
| flexipedes | bent stem |
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| flexipes | bent stem |
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| flexuosa | bending, curved |
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| flexuosus | bending, curved |
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| floribunda | profusely flowered |
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| floribundus | profusely flowered |
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| florida | flowering |
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| floridus | flowering |
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| foetida | unpleasantly scented |
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| foetidus | unpleasantly scented |
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| foliolosa | having small leaves |
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| formosa | beautiful |
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| formosissima | most beautiful |
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| fragilis | brittle, fragile |
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| frondosa | leafy |