a tall perennial herb having spikes of small white or purple flowers; common in eastern North America
[ Syn: culvers root , culvers root , culvers physic , culvers physic , veronicastrum virginicum ]
a tall perennial herb having spikes of small white or purple flowers; common in eastern North America
[ Syn: culvers root , culvers root , culvers physic , culvers physic , veronicastrum virginicum ]