1. (noun) a tall perennial herb having spikes of small white or purple flowers; common in eastern North America

• culver's physic
• culver's root
• culvers physic
• culvers root
• whorlywort

1. (noun) a tall perennial herb having spikes of small white or purple flowers; common in eastern North America

• asterid dicot genus

1. (noun) a tall perennial herb having spikes of small white or purple flowers; common in eastern North America

• family scrophulariaceae
• figwort family
• foxglove family
• scrophulariaceae