As nouns the difference between speedwell and winterweed
is that speedwell is a plant of genus Veronica while winterweed is Veronica hederifolia, a kind of speedwell that spreads chiefly in winter.
speedwell
English
(Veronica)
Noun
(
en noun)
A plant of genus Veronica .
Synonyms
* veronica, bird's eye, gypsyweed, fluellin
winterweed
English
Noun
(
en-noun)
(botany) Veronica hederifolia , a kind of speedwell that spreads chiefly in winter.
-
(
Webster 1913)