Scrophulariaceae

Digitalis - inflorescence

Mimulus- flowers

Veronica- flowers; note only 2 stamens

Plantago (Plantaginaceae) - wind-pollinated (big stamens, little perianth)

Penstemon - inflorescence

Penstemon - flower cut-away; 4 didynamous stamens and one staminode

Antirrhinum - ovary X-sect.

Verbascum - Scrophulariaceae sensu stricto

Orobanche - Orobanchaceae; holoparasitic