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| habit - this unarmed, annual herb can grow up to 4m tall in a single season | flowers -- subfamily Faboideae |
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| fruit - the legumes are inflated and usually contain two seeds. Notice the sharply acuminate apex of the legume. | a closer look at the fruits. How are these fruits different from the closely related Sesbania drummondii and S. herbacea? |
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| legume - when mature the legume has a thick outer layer and a thin inner membranous layer surrounding the seeds | leaves - what kind of leaf arrangement is present? The oblong leaflets have a sharp point (mucro) at the tip |
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