Penstemon gracilis Nutt.
Annotated by Hans Hallman.

Montana: Carter County: Custer National Forest: Chalk Buttes: from the top of the South Chalk Butte, ca 0.5 air mi SE of Alstrom Spring, into Birch Spring Draw, and NE toward Hehn Draw, ca 0.5-2 air mi SW of Trenk Pass, ca 13.5 air mi SW of Ekalaka. Elev. 3560-3640 ft.
45.7297° N, 104.7046° W; NAD 83, , GPS reading; T1S R57E S29; also SE1/4 S30, NE1/4 S31, and NW1/4 S32
Datum: NAD 83. Coordinate Source: GPS reading.
Along road with mixed ponderosa pine and grass-dominated upland. Phenology: Flowering.

Hans Hallman 1361, Jul 2, 2009
USFS, Accession: 890044, Barcode: USFS0057224