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| | Part I. (cont.) The legumes that can fix nitrogen |
 | | Most legumes can be identified by their "papilionaceous" flower (literally - butterfly-like) which consists of a large, uppermost (banner) petal, 2 lateral (wing) petals, and 2 lower, fused (keel) petals. |
 | | Other distinguishing factors include: 1) leaves that are alternate, stipulate, and pinnately (or palmately) compound and 2) fruits that are a "legume" or pod which consist of a single carpel that dehisces along 2 sutures. |
 | | The legume family (Leguminosae or Fabaceae) includes many important crop species such as pea, alfalfa, clover, common bean, peanut, and lentil. |
| academic.reed.edu /biology/Nitrogen/Nfix1(legumes).html (478 words) |
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