More info for the terms: forb, shrub, tree
Prairie sage occurs is a broadly distributed species that occurs in a wide range
of plant communities. Associates in communities where prairie sage is most
common are briefly identified below, followed by a discussion of plant
communities in which prairie sage occurs as a dominant.
Sagebrush ecosystems:
Prairie sage commonly occurs in sagebrush (Artemisia ssp.) communities.
Shrub and tree associates include big sagebrush (A. tridentata), black
sagebrush (A. nova), fringed sagebrush (A. frigida), shadscale
saltbush (Atriplex confertifolia), curlleaf mountain-mahogany (Cercocarpus
ledifolius), rubber rabbitbrush (Chrysothamnus nauseosus), green
rabbitbrush (C. viscidiflorus), antelope bitterbrush (Purshia tridentata),
Rocky mountain juniper (Juniperus
scopulorum), western juniper (J. occidentalis), interior ponderosa
pine (Pinus ponderosa var. scopulorum), Jeffrey pine (P.
jeffreyi), and several oaks (Quercus spp.). Herbaceous understory associates include Indian
ricegrass (Achnatherum hymenoides), blue grama (Bouteloua gracilis),
buckwheat (Eriogonum spp.), ephedra (Ephedra spp.), Idaho fescue (Festuca
idahoensis), rough fescue (Festuca altaica), needle-and-thread grass
(Hesperostipa comata), prairie Junegrass (Koeleria macrantha),
western wheatgrass (Pascopyrum smithii), Sandberg bluegrass (Poa
secunda), plains bluegrass (P. arida), and bluebunch wheatgrass (Pseudoroegneria
spicata) [37,72,115].
Chaparral-mountain shrub ecosystems:
Common tree and shrub associates in
these plant communities include alligator juniper (J. deppeana), oneseed
juniper (J. monosperma), Utah juniper (J. osteosperma), Mexican
pinyon (Pinus cembroides), Arizona white oak (Q. arizonica),
canyon live oak (Q. chrysolepis), Emory oak (Q. emoryi), Gambel
oak (Q. gambelii), silverleaf oak (Q. hypoleucoides),
Mexican blue oak (Q. oblongifolia), shrub live oak (Q. turbinella),
interior live oak (Q. wislizenii), chamise (Adenostoma
fasciculatum), manzanita (Arctostaphylos spp.), ceanothus (Ceanothus
spp.), bush chinquapin (Chrysolepsis sempervirens), curlleaf mountain-mahogany , birchleaf mountain-mahogany (C.
betuloides),
bigtooth maple (Acer grandidentatum), and bittercherry (Prunus
emarginata). Understory associates include sideoats grama (B.
curtipendula), hairy grama (B. hirsuta), and eastern Mojave buckwheat
(Eriogonum fasciculatum) [37,72,115].
Plains grasslands:
Prairie sage is particularly common in plains and prairie
grassland communities. In plains grasslands, associates include Indian ricegrass,
crested wheatgrass (Agropyron cristatum), desert wheatgrass (A.
desertorum), big bluestem (Andropogon gerardii var. gerardii), sand bluestem (A.
g. var. paucipilus), blue grama, sideoats grama, hairy grama,
black grama (B. eriopoda), buffalo grass (Buchloe dactyloides),
prairie sandreed (Calamovilfa longifolia), oatgrass (Danthonia spp.),
Canada wildrye (Elymus canadensis), thickspike wheatgrass (E.
lanceolatus), rough fescue, prairie Junegrass, needle-and-thread grass,
porcupine grass (H. spartea), green needlegrass (Nassella viridula),
tobosa (Pleuraphis mutica), Kentucky bluegrass (Poa pratensis),
western wheatgrass, bluebunch wheatgrass, little bluestem (Schizachyrium
scoparium), and alkali sacaton (Sporobolus airoides). Woody plants
commonly occurring in these communities include fringed sagebrush, sand
sagebrush (Artemisia filifolia), fourwing saltbush (Atriplex canescens),
Ashe juniper (J. ashei), eastern redcedar (J. virginiana)
winterfat (Krascheninnikovia lanata ), blackjack oak (Q. marilandica),
post oak (Q. stellata), and live oak (Q. virginiana) [72,115].
Prairie grasslands: In prairie communities, common associates include
threeawns (Aristida spp.), big bluestem, sand bluestem, blue grama, hairy
grama, sideoats grama, buffalo grass, prairie sandreed, needle-and-thread grass,
porcupine grass, prairie Junegrass, switchgrass (Panicum
virgatum), little bluestem, indiangrass (Sorghastrum nutans), prairie
dropseed (Sporobolus heterolepis), and giant dropseed (S. giganteus).
Common woody associates are big sagebrush, black sagebrush, sand sagebrush,
rubber rabbitbrush, green rabbitbrush, winterfat, saltbushes (Atriplex
spp.), hickories (Carya spp.), eastern redcedar, eastern cottonwood (Populus
deltoides), post oak, blackjack oak, and black oak (Q. velutina) [37,72,115].
Prairie sage usually occurs in scattered amounts and does not dominate extensive
areas [118], though it may form dense stands locally in grassland communities
[36]. Prairie sage may be dominant
in Wyoming, commonly codominating forb communities with tobacco root (Valeriana
edulis) [24,47]. This forb community is often found near
subalpine fir (Abies lasiocarpa) habitat types. Other associates in the
prairie sage-tobacco root community type are Idaho fescue, Rocky Mountain
goldenrod (Solidago multiradiata), thickstem aster (Eurybia
integrifolia), sulphur-flower buckwheat (Eriogonum umbellatum),
slender cinquefoil (Potentilla gracilis), elkweed (Frasera speciosa),
and spike trisetum (Trisetum spicatum) [47]. In Alberta, prairie
sage may codominate with western wheatgrass. Other common associates in this
community are riverbank sedge (Carex stenoptila), Kentucky bluegrass,
curlycup gumweed (Grindelia squarrosa), and desert goosefoot (Chenopodium
pratericola) [128]. Prairie sage is noted as a "differential species" in
mixed-grass (Kentucky bluegrass dominant) and tallgrass (big bluestem dominant)
prairie communities. In the mixed-grass community, other associates include
western wheatgrass and smooth brome (Bromus inermis), while little
bluestem is common in the tallgrass community [85].
Vegetation classifications identifying prairie sage as a plant
community dominant are listed below:
Alberta [128]
Wyoming [24,47]