Epithets
| scabrosa | rough |
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| scandens | climbing |
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| scapifera | with a scape (leafless flower stalk) |
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| scapigera | with a scape (leafless flower stalk) |
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| scolopendria | centipede-like |
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| scolopendrium | centipede-like |
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| scoparia | broom-like |
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| scoparium | broom-like |
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| scopuli | of the cliff(s) |
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| scopulorum | of the cliff(s) |
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| secunda | in a row, leaves on one side |
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| secundum | in a row, leaves on one side |
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| septemfida | 7 divisions |
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| septentrionale | northern |
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| septentrionalis | northern |