Caladium bicolor vs caladium

Caladium bicolor and caladium both are nouns.

Word	Noun	Adjective	Verb	Adverb
Caladium bicolor	Yes	No	No	No
caladium	Yes	No	No	No

As nouns, caladium is a hypernym of Caladium bicolor; that is, caladium is a word with a broader meaning than Caladium bicolor:

Caladium bicolor: most popular caladium; cultivated in many varieties since the late 19th century
caladium: any plant of the genus Caladium cultivated for their ornamental foliage variously patterned in white or pink or red

Caladium bicolor (noun)	caladium (noun)
most popular caladium; cultivated in many varieties since the late 19th century	any plant of the genus Caladium cultivated for their ornamental foliage variously patterned in white or pink or red