Blue-purple flowers  Leaves opposite

Clematis reticulata

Conradina glabra

Glandularia canadensis

Justicia ovata

Penstemon smallii

Ruellia caroliniensis

Salvia urticifolia

Scutellaria ellitpica

Scutellaria integrifolia

Scutellaria serrata

Trichostema setaceum

Verbena bonariensis

Verbena brasiliensis

Verbena rigida

Verbena stricta

Verbena tenuisecta

Veronica hederaefolia

Veronica persica