Two subspecies of M. antarctica are recognised

Trichomes on rosette leaves flexuous, patent to erect on blade and margins; usually found at inland localities of the North and South Islands of New Zealand, but can be coastal in Fiordland, Campbell Island and Chile ..................... Myosotis antarctica subsp. antarctica .

Trichomes on rosette leaves curved, and appressed to patent on lamina surfaces and margins; coastal localities of North, South and Stewart Islands (rarely inland)................... Myosotis antarctica subsp. traillii