Seed morphology of 12 Iranian endemic and subendemic species of Veronica wasnbsp;studied using scanning electron microscope (SEM). Seven qualitative and quantitativenbsp;characters were measured using SEM micrographs and stereomicroscopy. The seednbsp;shape of most species is ovate and plano-convex. The size of seeds ranges from 1.25 xnbsp;0.75 mm in V. khorassanica to 2.5 x 1.75 mm in V. viscosa Boiss. The ornamentationnbsp;of seed coat is reticulate-verrucate in V. khorassanica, V. czerniakowskiana, V.nbsp;mazanderanae and V. rubrifolia, reticulate-rugate in V. acrotheca, V. aucheri, V.nbsp;viscosa and V. intercedens, rugose in V. microcarpa, V. chionantha and V. rechingeri,nbsp;and reticulate-porate in V. gaubae. The testa cells are polygonal in ten species andnbsp;irregular in two species. Micromorphological characters of seeds are useful in specificnbsp;and subspecific delimitations of Iranian Veronica.
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