Penthorum sedoides L.
Engl.: Virginia stonecrop, ditch stone-crop.

The Medical Flora of Kansas: Parthenium - Pycnanthemum.

Botanical name: 
Prunus virginiana
Potentilla canadensis
Polygala senega
Ilex glabra
Ilex verticillata
Parthenium integrifolium
Passiflora lutea
Pastinaca sativa
Pellaea atropurpurea
Penthorum sedoides
Phoradendron leucarpum
Phytolacca americana
Plantago cordata
Plantago major
Podophyllum peltatum
Polemonium reptans
Polygala alba
Polygala incarnata
Polygala sanguinea
Polygala verticillata
Polygonum hydropiper
Polygonum punctatum
Ptelea trifoliata
Pycnanthemum pilosum
Smallanthus uvedalius

Classic texts: Journals: TNEMA 1882-1883.