Character

Veronica
americana

Veronica
anagallis-aquatica

Veronica
arvensis

Veronica
peregrina ssp. xalapensis

Veronica
persica

seed surface (dorsal face)

minutely wrinkled

minutely wrinkled
to reticulate

with low transverse wrinkles

with major longitudinal ridge

with tubercles & high transverse ridges

seed
cross-section

strongly
D-shaped

strongly
D-shaped

slightly C-shaped

slightly C-shaped to D-shaped

strongly
C-shaped

seed base

large darkened protrusion

small darkened protrusion

truncate or barely notched (sometimes darkened)

small protrusion
(sometimes darkened)

truncate (sometimes with dark spot)

nature of hilum

see fact sheet

see fact sheet

see fact sheet

see fact sheet

see fact sheet