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| ┌1A. | Leaves 3-lobed or trifoliate | ||||||||||||||||||||||
| │ | ┌2A. | Leaflets ovateOvate: 
, fully separate at the base; berries 1-2 seeded .. 📌Caladium ternatum | |||||||||||||||||||||
| │ | └2B. | Lobes of the leaf lanceolateLanceolate: 
, confluent at the base; berries manyseeded .. 📌Caladium macrotites | |||||||||||||||||||||
| ├1B. | Leaves ovateOvate:
, cordateCordate: 
, or hastateHastate: 
, but not 3-lobed | ||||||||||||||||||||||
| │ | ┌3A. | Leaf peltatePeltate: 
. | |||||||||||||||||||||
| │ | │ | ┌4A. | PetiolePetiole: Leaf stem.
to 2 mm thick, the leaves less than 10 cm long .. 📌Caladium humboldtii | ||||||||||||||||||||
| │ | │ | ├4B. | PetiolePetiole: Leaf stem.
s more than 4 mm thick, the leaves more than 12 cm long | ||||||||||||||||||||
| │ | │ | │ | ┌5A. | Leaves 12-25 cm broad, green or variegated with pink, red, or white .. 📌Caladium bicolor | |||||||||||||||||||
| │ | │ | │ | └5B. | Leaves 40-60 cm broad, glaucousGlaucous: Covered with a whitish powder or waxy coating.
bluish above .. 📌Caladium coerulescens | |||||||||||||||||||
| │ | ├3B. | Leaf not peltatePeltate:
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| │ | │ | ┌6A. | Leaf sagittateSagittate: 
.. 📌Caladium lindenii | ||||||||||||||||||||
| │ | │ | └6B. | Leaf more or less ovateOvate:
, lacking posteriorPosterior: 
lobes .. 📌Caladium schomburgkii | ||||||||||||||||||||