Penstemon

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Penstemon

a North American genus of plants in the family Scrophulariaceae which act as facultative selenium converters; the selenocompounds produced by the plant cause alopecia, lameness, laminitis; called also beard tongue.
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Species with <2% cover included, in order of dominance, spike trisetum (Trisetum spicatum), granite mousetail (Ivesia muirii), alpine willow (Salix arctica), frosted buckwheat (Eriogonum incanum), Sierra beardtongue (Penstemon heterodoxus), heath wood rush (Luzula orestera), pussypaws (Calyptridium umbellatum), rockcress (Arabis platysperma), glaucus willowherb (Epilobium glabenimum), and little elephant heads (Pedicularis attolens).
We chose to study the Ohio native Foxglove Beardtongue (Penstemon digitalis), and the introduced weed Dame's Rocket (Hesperis matronalis).