These may be selections or hybrids of M. didyma and M. fistulosa.
Other cultivars occasionally listed, but of uncertain origin, include M. 'Donnerwolke' [M. 'Thundercloud'], M. 'Enfield Gem' and M. 'Purple Crown'.
Flowers pale lilac-pink with purplish sepals.
Flowers scarlet with deeper red sepals.
A cultivar arising before 1913.
Flowers clear deep pink.
Originated about 1932.
Flowers red, tinted with purple.
Flowers deep violet. [‘Prairie Night’]
Flowers white. ['Snow White']