Verbena

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Verbena

a genus of plants in the family Verbenaceae.

Verbena bonariensis
called also purple top; suspected of causing sickness and abortion in cattle.
Verbena officinalis
contains a glycoside verbenalin reputed to cause contraction of the uterus and photosensitization. Called also common vervain.
Verbena rigida
thought to cause photosensitization. Called also Verbena venosa, wild verbena.
Verbena tenuisecta
suspected of causing deaths in chickens and photosensitization in sheep. Called also Mayne's pest.