Phil Bendle Collection:Verbena rigida (Rough verbena)

Kingdom:   Plantae
(Unranked):        Angiosperms
(Unranked):        Eudicots
(Unranked):        Asterids
Order:       Lamiales
Family:      Verbenaceae
Genus:      Verbena
Species:     V. rigida
Binomial name: Verbena rigida
Synonyms: Verbena rigida var. lilacina, Verbena rigida var. rigida, Verbena venosa
Common name: Rough Verbena, Stiff Verbena, Sandpaper Verbena, Upright Verbena, Tuberous Vervain, Slender vervain

Verbena rigida is a flowering herbaceous perennial plant and is native to Brazil and Argentina. It will grow to 60 centimetres and it has a spreading habit, with stalkless toothed leaves and bright purple or magenta, scented flowers in summer. There are numerous cultivars.
It can become invasive.

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Verbena rigida near the end of flowering
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The rough stem.
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More photos  http://davesgarden.com/guides/pf/showimage/124600/ 

Thanks to Wikipedia for text and information: https://creativecommons.org/licenses/by-sa/3.0/

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