• GENERAL DISTRIBUTION
• ECOSYSTEMS
• STATES
• BLM PHYSIOGRAPHIC REGIONS
• KUCHLER PLANT ASSOCIATIONS
• SAF COVER TYPES
• SRM (RANGELAND) COVER TYPES
• HABITAT TYPES AND PLANT COMMUNITIES

GENERAL DISTRIBUTION:

Tall threetip sagebrush ranges from central British Columbia south through central Washington and western Oregon to northern Nevada, and from western Montana south through eastern Idaho to northern Utah. It also occurs in the Snake River Valley in western Wyoming [3].

Wyoming threetip sagebrush occurs in central and southeastern Wyoming and southern Oregon [3,14]. In Wyoming, the subspecies are separated by the Continental Divide, with Wyoming threetip sagebrush occurring only east of the Divide [6].

Threetip sagebrush grows on approximately 8.4 million acres (3.4 million hectares) throughout the northern Rocky Mountains and Great Basin [11]. Occurrence is spotty throughout much of the Intermountain region because most of the area has been plowed for farmland [56].

ECOSYSTEMS:

FRES29  Sagebrush
FRES38  Plains grasslands

STATES:

ID  MT  NV  OR  UT  WA  WY

BC

BLM PHYSIOGRAPHIC REGIONS:

 5 Columbia Plateau
 6 Upper Basin and Range
 8 Northern Rocky Mountains
 9 Middle Rocky Mountains
10 Wyoming Basin

KUCHLER PLANT ASSOCIATIONS:

K038  Great Basin sagebrush
K050  Fescue-wheatgrass
K055  Sagebrush steppe
K056  Wheatgrass-needlegrass shrubsteppe
K065  Grama-buffalograss

SAF COVER TYPES:

No entry

SRM (RANGELAND) COVER TYPES:

322  Curlleaf mountain mahogany-bluebunch wheatgrass
324  Threetip sagebrush-Idaho fescue
404  Threetip sagebrush
416  True mountain mahogany

HABITAT TYPES AND PLANT COMMUNITIES:

Tall threetip sagebrush is commonly associated with bluebunch wheatgrass (Pseudoroegneria spicata), Idaho fescue (Festuca idahoensis), needle-and-thread grass (Hesperostipa comata), Sandberg bluegrass (Poa secunda), and Thurber's needlegrass (Achnatherum thurberianum). Common shrub associates of threetip sagebrush include big sagebrush (Artemisia tridentata), broom snakeweed (Guterrezia sarothrae), green rabbitbrush (Chrysothamnus viscidiflorus), gray horsebrush (Tetradymia canescens), and curlleaf mountain-mahogany (Cercocarpus ledifolius) [55]. Stands of tall threetip sagebrush often occur adjacent to mountain big sagebrush (A. t. spp. vaseyana) stands [6], but usually on moister soils at higher elevations [10]. Threetip sagebrush typically occurs at elevations above Wyoming big sagebrush but below mountain big sagebrush [11]. Threetip sagebrush stands are often more uniform with plants more closely spaced than in big sagebrush stands [46].

Publications listing tall threetip sagebrush as a dominant, codominant, or indicator species include the following:

Habitat types of the Curlew National Grassland, Idaho [20]
Steppe vegetation of Washington [22]
Wildlife habitat on managed rangelands--the Great Basin of southeastern Oregon: plant communities
    and their importance to wildlife [24]
Sagebrush-grass habitat types of southern Idaho [31]
An ecological study of sagebrush in interior British Columbia [36]
Plant communities of the Similkameen Valley, British Columbia [40]
Grassland and shrubland habitat types of western Montana [42]
An area of pristine vegetation in Craters of the Moon National Monument, Idaho [63]

Wyoming threetip sagebrush: This taxon commonly occurs with slimstem muhly (Muhlenberia filiculmis) [62]. The following publication lists Wyoming threetip sagebrush as a dominant species:

Grassland and shrubland habitat types of the Shoshone National Forest [64]

Related categories for SPECIES: Artemisia tripartita | Threetip Sagebrush