Bauhinia, Linnaeus, 1753

Juárez, Pedro, Flores, Rodolfo & Blanco, Mario A., 2018, Bauhinia proboscidea (Fabaceae: Cercidoideae), a new species from Costa Rica and Panama, with notes on B. beguinotii, B. gorgonae and B. pansamalana, Phytotaxa 361 (1), pp. 25-40 : 37

Key to the Neotropical species of Bauhinia with three fertile stamens

1. Leaves blades entire, sometimes apically bifid (sinus <¼ of the blade length)................................................................................2

- Leaves blades bilobed (sinus> ¼ of the blade length).......................................................................................................................3

2. Inflorescences 1–8-flowered; petals narrowly linear; inhabiting evergreen forest of the Pacific slope of Costa Rica and extreme western Panama............................................................................................................................................................ B. proboscidea

- Inflorescences 20–40-flowered; petals narrowly elliptic; inhabiting evergreen or deciduous forests of the Caribbean slope of southern Mexico, Guatemala and western Honduras................................................................................................. B. pansamalana

3. Leaf blades divided for one half to two thirds of their length; from Brazil...................................................................... B. pinheiroi

- Leaf blades divided for less than one third of their length; from Mexico, Guatemala and/or Honduras...........................................4

4. Leaf lobes apically rounded; petals sessile, white to pink; inhabiting open oak-pine, juniper, or deciduous forest of central Mexico................................................................................................................................................................................. B. coulteri

- Leaf lobes acuminate; petals shortly clawed, white; inhabiting moist deciduous or tropical rainforest of southern Mexico, Guatemala and western Honduras.............................................................................................................................. B. pansamalana