United States, Texas, Johnson, E side of Nolan River ca. 0.7-1.0 rivermiles N of St. Rt. 916, NW of Rio Vista. Vivian Malone property. Blum Quadrangle.
32.2475 -97.39889
Rare in moist loamy to silty alluvial soil on river terrace, shade of closed-canopy deciduous woodland. Associates include Allium canadense var. canadense, Carex amphibola, C. retroflexa, Chaerophyllum tainturieri, Chasmanthium latifolium, Galium aparine, G. circaezans, Geum canadense, Myosotis macrosperma, Nemophila phacelioides, Parietaria pensylvanica, Ranunculus macranthus, Sanicula canadensis, Urtica chamaedryoides, Verbesina virginica.