Family: Lamiaceae

Form: Upright herbaceous perennial reaching 2 to 3 feet

Leaves: Simple, opposite, crenate to serrate, lanceolate

Stem/Bark: Heavy pubescence gives stems a whitish appearance

Flower: Individual flowers are white or purple and project from purple or white, heavily pubescent calyces

Fruit: Nonshowy, schizocarp

Comments: This species outlived S. guaranitica and S. Vanhouttii in the IRREC teaching gardens