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7. Tribe INGEAE
印加树族 yin jia shu zu
Authors: Delin Wu & Ivan C. Nielsen
Leaves pinnate or bipinnate; stipules most often inconspicuous, sometimes spinescent; petiole, rachis, and pinnae most often with glands; leaflets opposite or (rarely) alternate, rarely 1-foliolate. Flowers heteromorphic or not, in heads, corymbs, umbels, racemes, spikes, or panicles, these again axillary or arranged in axillary and/or terminal panicle, cauliflory present in some genera. Calyx gamosepalous, valvate. Corolla gamopetalous, valvate. Stamens numerous, lower part of filaments united into a tube; anther glandless; pollen-grains usually collected into 2-6 masses in each locus. Ovaries 1 to many, free. Legumes various, dehiscent or not, straight, spirally contorted to curved, moniliform or not, segmented or not, funicular aril present in a few species. Seeds various, with pleurogram or not.
About 35 genera and 930-970 species: mostly distributed in tropics; seven genera (four introduced) and 38 species (five endemic, seven introduced) in China.
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| 1 |
Legume dehiscent into 2 valves |
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(2) |
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Legume indehiscent or late dehiscent |
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(4) |
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| 2 (1) |
Legume curved into a circle; stipules spinescent. |
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33 Pithecellobium |
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Legume straight or slightly curved; stipules not spinescent |
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(3) |
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| 3 (2) |
Legume with thickened sutures, elastically dehiscing from apex and downward; seeds with pleurogram. |
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32 Calliandra |
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Legume without thickened sutures, dehiscing along both dorsal and ventral sutures; seeds without pleurogram. |
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37 Archidendron |
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| 4 (1) |
Legume contorted into a half or full circle. |
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36 Enterolobium |
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Legume straight |
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(5) |
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| 5 (4) |
Flowers in spikes. |
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34 Falcataria |
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Flowers in head or short corymbs |
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(6) |
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| 6 (5) |
Legume septate between seeds, thick, fleshy. |
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38 Samanea |
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Legume not septate between seeds, flat, thin. |
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35 Albizia |
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Lower Taxa
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