- Garden2
- Garfield2
- Hamilton2
- Harlan2
- Howard2
- Minden2
- Missouri River bluffs, just north of Florence (northeast of Omaha)2
- N of Ogallala, Kingsley Dam2
- Near Lewellen2
- Omaha, Nebraska2
- River bluffs south of Rulo2
- Roadside bluff west of Peru2
- Rock2
- Thomas2
- Valentine, City park2
- at Pine Glen State Refuge, 9 miles north off Hwy 20, above Long Pine Creek2
- south of Gretna2
- "Canyon," Norfolk1
- Along Long Pine Creek, off Hwy. 20 near Long Pine1
- Along road from Rulo, NB to White Cloud, KS (Kansas Hwy 7), 0.1 mi north of Kansas state line. NE-facing slope above road & flood plain of Missouri River.1