Manyflower Tobacco, Many-flowered Tobacco: Nicotiana acuminata var. multiflora - Leaves often wider and herbage more densely haired, the hairs longer, shaggy and more glandular than the species below. Calyx with 5 main veins (1 per lobe) black-striped. Calyx lobes linear, 5-7 mm long, equal to or longer than the calyx tube. Corolla tube up to 6 cm long with flaring limb 12-22 mm wide. Found near Clarno, OR.
Coyote Tobacco Nicotiana attenuata - Leaves often narrower and the herbage shorter, less shaggy and less glandular than the species above. Calyx lobes not black-striped. The calyx lobes not linear but instead are triangular in outline. Corolla tube up to 3.5 cm long with the flaring limb 10-14 mm wide. Found east of the Cascade Mts. from British Columbia south to Mexico and east through the Pacific Northwest to Idaho and south through Nevada to Arizona and New Mexico.