Althea rosea vs Alcea rosea

Althea rosea and Alcea rosea both are nouns.

Word	Noun	Adjective	Verb	Adverb
Althea rosea	Yes	No	No	No
Alcea rosea	Yes	No	No	No

As nouns, Althea rosea and Alcea rosea are synonyms defined as:

Althea rosea and Alcea rosea: plant with terminal racemes of showy white to pink or purple flowers; the English cottage garden hollyhock

Other synonyms of Althea rosea include rose mallow.

Althea rosea (noun)	Alcea rosea (noun)
plant with terminal racemes of showy white to pink or purple flowers; the English cottage garden hollyhock	plant with terminal racemes of showy white to pink or purple flowers; the English cottage garden hollyhock