"magnolia" is "magnolia", I know.
Do you or can you use different word depends on the types?
Magnolia quinquepeta is called "Mokuren",
Magnolia grandiflora is called "Taizanboku",
Magnolia kobus is called "Kobushi".
Mokuren is usually purple.
Taizanboku is bigger than other magnolias.
Kobushi is usually pink and bloom with a leaf. And the origin is in Japan.
MOKUREN, continuing long time (in a Japanese style garden), keep its simpleness
Magnolia, in the current style garden (in Japan), show its elegacne