Key to Wisconsin Verbenaceae

Author: John G. Zaborsky

• 1a. Flowers in dense axillary heads on long peduncles; corollas 4-lobed; nutlets 2 Phyla

• 1b.Flowers in (mostly) terminal, elongated or foreshortened spikes; corollas 5-lobed; nutlets 4 2

• 2a.Flowers 10–30 mm long, borne in flat-topped, foreshortened spikes; corolla limbs 8–30 mm wide; styles 6–20 mm long Glandularia

• 2b.Flowers 3–9 mm long, borne in elongate spikes; corolla limbs 3–9 mm wide; styles 2–3 mm long Verbena