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| habit and fruit - an inflorescence can have up to 30 flowers, so it is not uncommon to have clusters of 5-10 fruit per inflorescence | leaves - what kind of leaf arrangement is this? Are these simple or compound leaves? If compound, what type of compound leaf is it? The leaflets are distinctly apiculate at the tip. |
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| inflorescence - these are the typical papilionoid flowers that are strongly zygomorphic. Compare the placement of the flowers with that of the immature fruit in the picture below. | flowers - the flowers in this sub-family have petals that are differentiated into the banner, wings and keel. This species has 10 stamens, 9 of which have the filaments fused. |
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| fruits - the ovary elongates as the fruit develops into the distinctive legume | young fruits (legumes)--when these fruits mature, the seeds will detach from the pericarp. Because of this, they rattle around inside the fruit when you shake it (and thus the common name, rattlebush). |
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| habit--Sesbania drummondii is a shrubby, short-lived perennial | กก |
