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| flower--notice that there are 5 separate petals. Which subfamily of Fabaceae does this belong to? Caesalpinioideae, Mimosoideae, or Papilionoideae? | leaves--this species is called two-leaved senna because each leaf contains exactly two leaflets (notice that the leaves are alternate, as they are in all Fabaceae) |
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| habit--Senna roemeriana is an herbaceous perennial | fruit--what kind of fruit is found in Fabaceae? |
