Tepedino, V.J; Griswold, T.L.; Freilich, J.E.; Shephard, P. 2011. Specialist and generalist bee visitors of an endemic beardtongue (Penstemon caryi: Plantaginaceae) of the Big Horn Mountains, Wyoming. Western North American Naturalist. 71(4):523-528.

Tepedino, V.J; Griswold, T.L.; Freilich, J.E.; Shephard, P. 2011. Specialist and generalist bee visitors of an endemic beardtongue (Penstemon caryi: Plantaginaceae) of the Big Horn Mountains, Wyoming. Western North American Naturalist. 71(4):523-528.

Tepedino, V.J; Griswold, T.L.; Freilich, J.E.; Shephard, P. 2011. Specialist and generalist bee visitors of an endemic beardtongue (Penstemon caryi: Plantaginaceae) of the Big Horn Mountains, Wyoming. Western North American Naturalist. 71(4):523-528.

Tepedino, V.J; Griswold, T.L.; Freilich, J.E.; Shephard, P. 2011. Specialist and generalist bee visitors of an endemic beardtongue (Penstemon caryi: Plantaginaceae) of the Big Horn Mountains, Wyoming. Western North American Naturalist. 71(4):523-528.

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