False Gromwell
or
Wild Job's Tears
Onosmodium virginianum
Onosmodium virginianum (L.) A. DC. is an herbaceous, perennial, erect, hairy
plant 30-60 cm in height. The plant’s oblong to elliptic leaves are 4-6 cm
in length by 1 to 2 centimeters in width, with three to five prominent veins. Bracteal
leaves and a hispid, five-parted calyx with erect, linear divisions subtend the corolla,
which is hairy on the outside and smooth on the inside. Each of the five acuminate
corolla lobes is approximately 3 mm in length.
The plant’s tubular yellow flowers, which
are borne on leafy, downward-curving (helicoid) cymes, are 7 to 10 millimeters in length.
The filiform style is long-exserted from the flower, and the anthers, inserted in the corolla
throat, wither before the corolla is fully developed. Onosmodium virginianum blooms in
June and July.