Oonopsis multicaulis (Nutt.) Greene
Annotated by Halse, R., 2014.

Montana: Carter County: along Cottonwood Road ca. 0.5 miles north of its junction with US Hwy 212, ca. 7 miles nw of Alzada. Elev. 1082.00 m.
Flowers yellow.

Richard R. Halse 9104, Jun 2014
OSC, Catalog: OSC243288

Stenotus multicaulis Nutt.
[= Oonopsis multicaulis]
Annotated by Shannon Kimball, 2015.

Montana: Carter County: Alzada, 18 mi N, 3 mi W. E side MT hwy 323. Elev. 3680-3700 ft.
45° 19' 51" N, 104° 28' 35" W
Coordinate Source: Specimen Label.
Nearly bare shaly clay flats with Atriplex, Xanthoparmelia. Nearly level. Full sun. Locally abundant; rays yellow. Phenology: Flowers.

Susan J. Rolfsmeier 654, Jun 3, 2004
With Steven B. Rolfsmeier, Julie M. Lancaster
MONTU, Accession: 162467

Oonopsis multicaulis (Nutt.) Greene
Annotated by Gregory K. Brown, 1994.

Montana: Carter County: 6.8 mi N of Alzada on Mont Hwy 323. Elev. 3390 ft.
T8S R60E S27
Datum: NAD 83. Uncertainty: 0 meters. Coordinate Source: Nat. Geog. TOPO!.
Roadside adjacent to cultivated field, heavy clay soil. Two small populations found. Same as Evans 35; 2n = 4 II. Phenology: Flowering and Fruiting.

Gregory K. Brown 2829, Jun 14, 1989
With Timothy Evans, Neil Snow
RM, Accession: 785115

Oonopsis multicaulis (Nutt.) Greene
Annotated by Gregory K. Brown, 1994.

Montana: Carter County: 6.8 mi N of Alzada on Mont Hwy 323. Elev. 3390 ft.
T8S R60E S27
Datum: NAD 83. Uncertainty: 0 meters. Coordinate Source: Nat. Geog. TOPO!.
Roadside adjacent to cultivated field, heavy clay soil. Two small populations found. Same as Evans 35; 2n = 4 II. Phenology: Flowering and Fruiting.

Gregory K. Brown 2829, Jun 14, 1989
With Timothy Evans, Neil Snow
RM, Accession: 785004

Oonopsis multicaulis (Nutt.) Greene
Annotated by Gregory K. Brown, 1994.

Montana: Carter County: 6.8 mi N of Alzada on Mont Hwy 323. Elev. 3390 ft.
T8S R60E S27
Datum: NAD 83. Uncertainty: 0 meters. Coordinate Source: Nat. Geog. TOPO!.
Roadside adjacent to cultivated field, heavy clay soil. Two small populations found. Same as Evans 35; 2n = 4 II. Phenology: Flowering and Fruiting.

Gregory K. Brown 2829, Jun 14, 1989
With Timothy Evans, Neil Snow
RM, Accession: 784865

Oonopsis multicaulis (Nutt.) Greene
Annotated by Gregory K. Brown, 1994.

Montana: Carter County: Along Mont Hwy 323, ca 6.8 mi N of Alzada. Elev. 3390 ft.
T8S R60E S27
Datum: NAD 83. Uncertainty: 0 meters. Coordinate Source: Nat. Geog. TOPO!.
In small patches on both sides of road. Same as Brown 2829; 2n = 4 II. Phenology: Flowering.

Timothy Evans 35, Jun 14, 1989
With Gregory K. Brown, Neil Snow
RM, Accession: 784948

Stenotus multicaulis Nutt.
[= Oonopsis multicaulis]
Annotated by P. Lesica, Mar 2008.

Montana: Carter County: Along Hwy 212 ca. 5 miles southeast of Hammond. Elev. 3700 ft.
T7S R56E S35
Datum: WGS 84. Uncertainty: 1609 meters. Coordinate Source: Digital Map.
Common on heavy clay soil of slumping, gentle west facing slopes. With Atriplex nuttallii and Agropyron dasytachyum. Phenology: Flowers.

Peter Lesica 3844, Jun 15, 1986
MONT, Accession: 84920

Stenotus multicaulis Nutt.
[= Oonopsis multicaulis]
Annotated by Peter Lesica, Mar 2008.

Montana: Carter County: Hwy 212; ca. 5 miles southeast of Hammond. Elev. 3700 ft.
45.1849° N, 104.8244° W; T7S R56E S35
Coordinate Source: TRS-website.
Common on heavy clay soil of slumping, gentle west-facing slopes along Hwy 212. With Atriplex nuttallii and Agropyron dastachyum. Plants of Montana MRC 4229 Phenology: Flowers.

Peter Lesica 3844, Jun 15, 1986
MONTU, Accession: 138562

Stenotus multicaulis Nutt.
[= Oonopsis multicaulis]
Annotated by Peter Lesica, Mar 2008.

Montana: Carter County: Finger Buttes; ca. 15 miles north of Alzada. Elev. 3800 ft.
45.3096° N, 104.3705° W; T6S R60E S16
Coordinate Source: TRS-website.
Common in barren clay soil on steep, south-facing slopes of the Finger Buttes. With Eriogonum pauciflorum and Atriplex argentea. Plants of Montana Phenology: Flowers.

Peter Lesica 3857, Jun 16, 1986
MONTU, Accession: 104282

Haplopappus multicaulis (Nutt.) A. Gray
[= Oonopsis multicaulis]

Montana: Carter County: [No locality given] Elev. 3500 ft.
T85 R58E S35 SW1/4 SE1/4
Northeast aspect. Shallow clay; associated with Eriogonum sp. Phenology: Flowers.

Lyndon Bucher 10, Jul 3, 1984
MONT, Accession: 70272

Haplopappus multicaulis (Nutt.) A. Gray
[= Oonopsis multicaulis]

Montana: Carter County: About 09 miles Northwest of Alzada. Elev. 3500 ft.
T8S R58E S35 SW1/4 SE1/4
Soil: shallow clay. Assoc. sp. Eriogonum. Phenology: Flowers.

L. Bucher 10, Aug 3, 1984
MONT, Accession: 73070

Stenotus multicaulis Nutt.
[= Oonopsis multicaulis]
Annotated by Peter Lesica, Mar 2008.

Montana: Carter County: Hwy 323; 7 1/2 mi north of Alzada just west of twin buttes. Elev. 3200 ft.
45.1222° N, 104.229° W; T8S R61E S22
Coordinate Source: TRS-website.
Common in barren clay soil along Hwy 323. With Agropyron smithii and Atriplex nuttallii. Plants of Montana Phenology: Flowers.

Peter Lesica 3064, Jun 21, 1984
MONTU, Accession: 87704

Haplopappus multicaulis (Nutt.) A. Gray
[= Oonopsis multicaulis]
Annotated by JCW.

Montana: Carter County: Alzada. 20 miles North.
On ricky outcrops. Phenology: Flowers.

W. E. Booth 2658, Jul 19, 1948
MONT, Accession: 42424

Haplopappus multicaulis (Nutt.) A. Gray
[= Oonopsis multicaulis]

Montana: Carter County: Blue Mud Hills. Region: 6.
T2S R58E
Phenology: Flowers.

Unknown s.n., Jun 13, 1941
MONT, Accession: 53804

Stenotus multicaulis Nutt.
[= Oonopsis multicaulis]
Annotated by Peter Lesica, Mar 2008.

Montana: Carter County: Carter County.
45.466659° N, 104.5505112° W; T2S R58E
Coordinate Source: TRS-website.
United States
Department of the Interior
Division of Grazing, CCC
Range Serveys Herbarium
The genus Oonopsis is probably only a section of Aplopappus.
Identified by: Holmgren at Miles City Phenology: Flowers.

Holmgren 6, Jun 13, 1941
MONTU, Accession: 88589