Hydrangea macrophylla hortensis vs hortensia

Hydrangea macrophylla hortensis and hortensia both are nouns.

Word	Noun	Adjective	Verb	Adverb
Hydrangea macrophylla hortensis	Yes	No	No	No
hortensia	Yes	No	No	No

As nouns, Hydrangea macrophylla hortensis and hortensia are synonyms defined as:

Hydrangea macrophylla hortensis and hortensia: deciduous shrub bearing roundheaded flower clusters opening green and aging to pink or blue

Hydrangea macrophylla hortensis (noun)	hortensia (noun)
deciduous shrub bearing roundheaded flower clusters opening green and aging to pink or blue	deciduous shrub bearing roundheaded flower clusters opening green and aging to pink or blue
	very tall branching herb with showy much-doubled yellow flower heads