genera/16,400 spp., cosmopolitan (Caesalpinioideae and Mimosoideae
K 5 or ((3-)5(6)); C (0-)5, irregular. A usually twice perianth, to many. G 1, each with (1) 2-many ovules.
Fruit usually dry, dehiscent into two valves (a legume), occasionally breaking up into 1-seeded segments (lomentum), or indehiscent (samaroid or drupe). Click on TOL logo to see the TOL Fabaceae fruits page (use your browser's BACK button to return).
Leaves variously compound or simple, sometimes phyllodic, or reduced to a tendril, the petiole and leaflets with basal pulvini often controlling orientation and 'sleep movements.' Stipules present, sometimes large, or represented by spines as in Robinia; in Acacia, these are ant-inhabited.
Judd et al. 1999, pp. 283-288.
Fabaceae - Subfamilial classification (when subfamilies below not treated as families):
|Mimosoideae||bipinnately cpd.||actinomorphic||valvate||trees, shrubs|
|Caesalpinioideae||pinnately or bipinnately cpd.||zygomorphic||imbricate (1)||trees, shrubs, lianes|
|Faboideae||pinnate, trifoliolate, occ. unifoliolate||zygomorphic||imbricate (2)||trees, shrubs, lianes, herbs|
Ontario native genera of Fabaceae (as "Leguminosae" in Morton and Venn 1990; exotic genera mentioned, in parentheses, genera seen in the lab 13-Nov-97 in boldface):
Mimosoideae - (Acacia, Calliandra, Entada, Mimosa, Pithecellobium, Prosopis)
Caesalpinioideae - Cassia, Cercis, Gleditsia, Gymnocladus; (Caesalpinia, Bauhinia, Caesalpinia, Ceratonia, Delonix, Haematoxylum)
Faboideae - Amorpha,
Amphicarpaea, Apios, Astragalus, Dalea,
Hedysarum, Lathyrus, Lespedeza, Lupinus, Medicago, Oxytropis,
Strophostyles, Tephrosia, Vicia
Note the many commercially important plants in this family, e.g. Arachis (peanut), Cicer (chickpea), Glycine (soybean), Phaseolus (bean), Pisum (pea) and many others; also important as green manure (e.g. Medicago) and fodder (e.g. Trifolium).
Note that in the floral diagrams below the shaded ring represents the small, inconspicuous hypanthium that nevertheless is present in these flowers (see illustrations in Corner 1964); the same convention is used to represent hypanthia in other families as well (Porter 1967).
Fabaceae on Tree of Life website (click on logo)
The Flora North America treatment of the Fabaceae (Vol. 10-11) is not yet available:
L. Watson and M. J. Dallwitz
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