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Key to Fabaceae

Fabaceae

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https://fsus.ncbg.unc.edu/main.php?pg=show-key.php&keyid=39887

Trees, shrubs, or woody vines; [subfamilies Caesalpinioideae, Mimosoideae, and Faboideae]

Leaves 1-3-foliolate, or leaves reduced to flattened phyllodia or phyllodial spines.

⇒ Key to Fabaceae, Key A: woody legumes with all leaves 1-, 2-, or 3-foliolate, or reduced to flattened phyllodia or phyllodial spines

Leaves 4-many-foliolate.

Leaves bipinnately compound

⇒ Key to Fabaceae, Key B: woody legumes (trees, shrubs, or woody vines) with bipinnately compound leaves

Leaves pinnately compound.

Leaves evenly 1-pinnate, with 1 or more lateral pairs of leaflets and 0 terminal leaflet

⇒ Key to Fabaceae, Key C: woody legumes with evenly 1-pinnately compound leaves with 2 or more leaflets
[subfamilies Faboideae and Caesalpinioideae]

Leaves oddly 1-pinnate, with a terminal leaflet

⇒ Key to Fabaceae, Key D: woody legumes with oddly 1-pinnately compound leaves with 5 or more leaflets
[subfamilies

Herbs (including herbaceous vines).

Leaves 4-many-foliolate.

Leaves palmately compound, with 4 or more leaflets; [subfamily Faboideae]

⇒ Key to Fabaceae, Key E: herbaceous legumes with palmate leaves with 4 or more leaflets [subfamily Faboideae]

Leaves pinnately or bipinnately compound.

Leaves bipinnately compound

⇒ Key to Fabaceae, Key F: herbaceous legumes with bipinnate leaves [subfamily Mimosoideae]

Leaves pinnately compound

Leaves evenly 1-pinnate, with 1 or more lateral pairs of leaflets and 0 terminal leaflet

⇒ Key to Fabaceae, Key G: herbaceous legumes with once-pinnately, even-pinnately compound (or 'palmately' 2-foliolate) leaves with 2 or more leaflets
[subfamilies Faboideae and Caesalpinioideae]

Leaves oddly 1-pinnate, with a terminal leaflet

⇒ Key to Fabaceae, Key H: herbaceous legumes with once-pinnately, odd-pinnately compound leaves with 5 or more leaflets
[subfamilies Faboideae and Caesalpinioideae]

Leaves 0-3-foliolate ; [subfamily Faboideae].

Leaves 2-foliolate

Leaves 0, 1, or 3-foliolate.

Leaves unifoliolate, or with leaf or leaflet blades absent, replaced by a tendril (and with foliaceous stipules)

⇒ Key to Fabaceae, Key I: herbaceous legumes with all leaves unifoliolate or leaflets absent [subfamily Faboideae]

Leaves trifoliolate (plants with some upper stem or lower stem leaves unifoliolate but with other trifoliolate leaves should be keyed here).

Leaves palmately 3-foliolate (the petiolules of the 3 leaflets usually of similar length (if the apparent petiolule of the terminal leaflet is slightly longer, it does not have a joint between a rachis and the petiolule of the terminal leaflet)

⇒ Key to Fabaceae, Key J: herbaceous legumes with palmately trifoliolate leaves [subfamily Faboideae]

Leaves pinnately 3-foliolate

⇒ Key to Fabaceae, Key K: herbaceous legumes with pinnately trifoliolate leaves [subfamily Faboideae]

Flora of the Southeastern United States

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Key to Fabaceae

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