There are at least 445 members of the aster and sunflower order, Asterales, found in Montana. Some of these species are exotics (not native to Montana)Exotic species have been deliberately or accidentally introduced to areas outside of their native geographic range and are able to reproduce and maintain sustainable populations in these areas. These exotic populations may also be referred to as alien, introduced, invasive, non-native, or non-indigenous. and some species have been designated as Species of Concern.Species of Concern are native taxa that are at-risk due to declining population trends, threats to their habitats, restricted distribution, and/or other factors. Designation as a Montana Species of Concern or Species of Concern is based on the Montana Status Rank, and is not a statutory or regulatory classification. Rather, these designations provide information that helps resource managers make proactive decisions regarding species conservation and data collection priorities.
Achillea millefolium, common yarrow Achillea nobilis, noble yarrow Achillea ptarmica, sneezeweed Acroptilon repens, Russian knapweed Adenocaulon bicolor, American trailplant Ageratina occidentalis, western boneset Agoseris aurantiaca, orange agoseris Agoseris glauca, pale agoseris Agoseris glauca var. dasycephala, pale agoseris Agoseris glauca var. glauca, pale agoseris Agoseris grandiflora, large-flower agoseris Agoseris heterophylla, annual agoseris Agoseris lackschewitzii, pink agoseris Agoseris parviflora, steppe agoseris Almutaster pauciflorus, alkali marsh aster Ambrosia acanthicarpa, flat-spine bursage Ambrosia artemisiifolia, annual ragweed Ambrosia psilostachya, naked-spike ambrosia Ambrosia tomentosa, skeleton-leaf bursage Ambrosia trifida, great ragweed Anaphalis margaritacea, pearly everlasting Antennaria alpina, alpine pussytoes Antennaria anaphaloides, tall pussytoes Antennaria aromatica, aromatic pussytoes Antennaria corymbosa, meadow pussytoes Antennaria densifolia, dense-leaved pussytoes Antennaria dimorpha, low pussytoes Antennaria howellii, Howell's pussytoes Antennaria lanata, woolly pussytoes Antennaria luzuloides, rush pussytoes Antennaria media, rocky mountain pussytoes Antennaria microphylla, littleleaf pussytoes Antennaria monocephala, single-head pussytoes Antennaria neglecta, field pussytoes Antennaria parvifolia, Nuttall's pussytoes Antennaria pulcherrima, showy pussytoes Antennaria racemosa, racemose pussytoes Antennaria rosea, rosy pussytoes Antennaria umbrinella, umber pussytoes Anthemis arvensis, corn camomile Anthemis cotula, mayweed Anthemis tinctoria, golden camomile Arctium lappa, greater burdock Arctium minus, lesser burdock Arnica amplexicaulis, stream-bank arnica Arnica angustifolia, narrowleaf arnica Arnica chamissonis, leafy arnica Arnica cordifolia, heart-leaved arnica Arnica fulgens, hillside arnica Arnica latifolia, mountain arnica Arnica latifolia var. gracilis, smallhead arnica Arnica longifolia, long-leaf arnica Arnica mollis, hairy arnica Arnica parryi, nodding arnica Arnica rydbergii, subalpine arnica Arnica sororia, twin arnica Arnica × diversifolia, rayless arnica Artemisia absinthium, common wormwood Artemisia annua, annual wormwood Artemisia arbuscula, dwarf sagebrush Artemisia biennis, biennial wormwood Artemisia campestris, field sagewort Artemisia campestris subsp. borealis, boreal field sagewort Artemisia campestris subsp. caudata, field sagewort Artemisia cana, silver sagebrush Artemisia cana subsp. cana, silver sagebrush Artemisia cana subsp. viscidula, silver sagebrush Artemisia dracunculus, tarragon Artemisia frigida, fringed sage Artemisia lindleyana, Columbia River wormwood Artemisia longifolia, longleaf wormwood Artemisia longiloba, alkali sagebrush Artemisia ludoviciana, white sagebrush Artemisia ludoviciana subsp. candicans, white sagebrush Artemisia ludoviciana subsp. incompta, white sagebrush Artemisia ludoviciana subsp. ludoviciana, white sagebrush Artemisia michauxiana, Michaux's wormwood Artemisia norvegica, boreal wormwood Artemisia nova, black sagebrush Artemisia pedatifida, bird's-foot sagebrush Artemisia rigida, scabland sagebrush Artemisia scopulorum, alpine sagebrush Artemisia spinescens, budsage Artemisia tilesii, Tilesius wormwood Artemisia tridentata, big sagebrush Artemisia tridentata subsp. tridentata, basin big sagebrush Artemisia tridentata subsp. vaseyana, mountain big sagebrush Artemisia tridentata subsp. wyomingensis, Wyoming big sagebrush Artemisia tripartita, three-tip sagebrush Artemisia tripartita subsp. rupicola, Wyoming threetip sagebrush Artemisia tripartita subsp. tripartita, threetip sagebrush Balsamorhiza hookeri, Hooker's balsamroot Balsamorhiza incana, hoary balsamroot Balsamorhiza macrophylla, large-leaved balsamroot Balsamorhiza sagittata, arrowleaf balsamroot Bellis perennis, lawn daisy Bidens beckii, beck water-marigold Bidens cernua, nodding beggarticks Bidens comosa, three-lobe beggarticks Bidens frondosa, devil's beggarticks Bidens vulgata, tall bur-marigold Brickellia eupatorioides, thoroughwort brickellbush Brickellia grandiflora, tasselflower brickellbush Brickellia oblongifolia, mojave brickellbush Canadanthus modestus, great northern aster Carduus acanthoides, spiny plumeless-thistle Carduus nutans, musk thistle Centaurea cyanus, garden cornflower Centaurea diffusa, diffuse knapweed Centaurea jacea, brown starthistle Centaurea montana, mountain starthistle Centaurea nigra, black starthistle Centaurea scabiosa, great starthistle Centaurea solstitialis, yellow starthistle Centaurea stoebe, spotted knapweed Centaurea virgata, squarrose knapweed Chaenactis alpina, hoary pincushion Chaenactis douglasii, dusty maiden Chondrilla juncea, rush skeletonweed Chrysothamnus viscidiflorus, sticky-leaf rabbitbrush Cichorium intybus, chicory Cirsium arvense, Canada thistle Cirsium brevistylum, short-styled thistle Cirsium canescens, prairie thistle Cirsium canovirens, gray green thistle Cirsium eatonii, Eaton's thistle Cirsium flodmanii, Flodman's thistle Cirsium foliosum, leafy thistle Cirsium hookerianum, hooker thistle Cirsium longistylum, long-styled thistle Cirsium pulcherrimum, Wyoming thistle Cirsium scariosum, meadow thistle Cirsium subniveum, Jackson Hole thistle Cirsium undulatum, wavyleaf thistle Cirsium vulgare, bull thistle Conyza canadensis, Canada horseweed Coreopsis tinctoria, golden tickseed Crepis acuminata, longleaf hawk's-beard Crepis atribarba, slender hawksbeard Crepis elegans, elegant hawk's-beard Crepis intermedia, small-flower hawk's-beard Crepis modocensis, siskiyou hawk's-beard Crepis nana, dwarf alpine hawk's-beard Crepis nicaeensis, Turkish hawksbeard Crepis occidentalis, gray hawk's-beard Crepis runcinata, naked-stem hawk's-beard Crepis runcinata subsp. glauca, fiddleleaf hawksbeard Crepis runcinata subsp. hispidulosa, fiddleleaf hawksbeard Crepis runcinata subsp. runcinata, fiddleleaf hawksbeard Crepis setosa, bristly hawk's-beard Crepis tectorum, narrowleaf hawk's-beard Dyssodia papposa, fetid dogweed Echinacea angustifolia, narrow-leaved purple coneflower Ericameria discoidea, whitestem goldenbush Ericameria discoidea var. discoidea, whitestem goldenbush Ericameria discoidea var. linearis, linear-leaved whitestem goldenbush Ericameria nana, dwarf goldenweed Ericameria nauseosa, rubber rabbitbrush Ericameria parryi, Parry's rabbitbrush Ericameria parryi var. montana, Parry's mountain rabbitbrush Ericameria suffruticosa, single-head goldenweed Erigeron acris, bitter fleabane Erigeron acris subsp. debilis, bitter fleabane Erigeron acris subsp. kamtschaticus, bitter fleabane Erigeron allocotus, Bighorn fleabane Erigeron asperugineus, Idaho fleabane Erigeron caespitosus, caespitose fleabane Erigeron compositus, cutleaf fleabane Erigeron corymbosus, longleaf fleabane Erigeron coulteri, Coulter fleabane Erigeron divergens, spreading fleabane Erigeron eatonii, Eaton's fleabane Erigeron evermannii, Evermann fleabane Erigeron filifolius, threadleaf fleabane Erigeron flabellifolius, fan-leaved fleabane Erigeron flagellaris, running fleabane Erigeron formosissimus, beautiful fleabane Erigeron glabellus, smooth fleabane Erigeron glabellus var. glabellus, streamside fleabane Erigeron glabellus var. pubescens, streamside fleabane Erigeron gracilis, slender fleabane Erigeron grandiflorus, large-flower fleabane Erigeron humilis, low fleabane Erigeron lackschewitzii, Lackschewitz' fleabane Erigeron lanatus, woolly fleabane Erigeron leiomerus, smooth fleabane Erigeron linearis, linear-leaf fleabane Erigeron lonchophyllus, short-ray fleabane Erigeron ochroleucus, buff fleabane Erigeron ochroleucus var. ochroleucus, buff fleabane Erigeron ochroleucus var. scribneri, buff fleabane Erigeron parryi, Parry's fleabane Erigeron peregrinus, subalpine fleabane Erigeron philadelphicus, Philadelphia fleabane Erigeron pumilus, shaggy fleabane Erigeron radicatus, taprooted fleabane Erigeron rydbergii, Rydberg's fleabane Erigeron simplex, one-stem fleabane Erigeron speciosus, aspen fleabane Erigeron strigosus, daisy fleabane Erigeron subtrinervis, three-nerve fleabane Erigeron tener, slender fleabane Erigeron tweedyi, tweedy's fleabane Erigeron ursinus, bear river fleabane Eriophyllum lanatum, common woolly-sunflower Eriophyllum lanatum var. integrifolium, common woolly sunflower Eriophyllum lanatum var. lanatum, common woolly-sunflower Eucephalus elegans, elegant aster Eucephalus engelmannii, Engelmann's aster Eupatorium maculatum, spotted joepye-weed Eupatorium occidentale, western joepye-weed Eurybia conspicua, showy aster Eurybia glauca, gray aster Eurybia integrifolia, thick-stem aster Eurybia merita, subalpine aster Eurybia sibirica, arctic aster Euthamia graminifolia, flat-top fragrant goldenrod Euthamia occidentalis, western fragrant goldenrod Evax prolifera, big-head evax Filago arvensis, field fluffweed Gaillardia aristata, great blanket-flower Galinsoga quadriradiata, fringed quickweed Gnaphalium macounii, Macoun's cudweed Gnaphalium microcephalum, white cudweed Gnaphalium palustre, western marsh cudweed Gnaphalium purpureum, purple cudweed Gnaphalium stramineum, cotton-batting cudweed Gnaphalium uliginosum, low cudweed Grindelia howellii, Howell's gumweed Grindelia nana, Idaho gumweed Grindelia squarrosa, curlycup gumweed Gutierrezia sarothrae, broom snakeweed Helenium autumnale, common sneezeweed Helenium hoopesii, orange sneezeweed Helianthella quinquenervis, nodding rockrose Helianthella uniflora, Rocky Mountain rockrose Helianthus annuus, common sunflower Helianthus maximiliani, Maximillian sunflower Helianthus nuttallii, Nuttall's sunflower Helianthus pauciflorus, stiff sunflower Helianthus petiolaris, prairie sunflower Helianthus × laetiflorus, hybrid prairie sunflower Heterotheca villosa, hairy golden-aster Heterotheca villosa var. depressa, low golden aster Heterotheca villosa var. foliosa, hairy false goldenaster Heterotheca villosa var. minor, hairy false goldenaster Heterotheca villosa var. villosa, hairy false goldenaster Hieracium albiflorum, white-flower hawkweed Hieracium aurantiacum, orange hawkweed Hieracium caespitosum, meadow hawkweed Hieracium gracile, alpine hawkweed Hieracium praealtum, kingdevil Hieracium scouleri, Scouler's hawkweed Hieracium scouleri var. albertinum, Albert's hawkweed Hieracium scouleri var. griseum, hound's-tongue hawkweed Hieracium scouleri var. scouleri, Scouler's hawkweed Hieracium umbellatum, narrowleaf hawkweed Hulsea algida, alpine hulsea Hymenopappus filifolius, fine-leaved hymenopappus Hymenopappus filifolius var. luteus, yellowish hymenopappus Hymenopappus filifolius var. polycephalus, manyhead hymenopappus Hymenoxys acaulis, stemless four-nerve-daisy Hymenoxys grandiflora, old-man-of-the-mountain Hymenoxys richardsonii, Richardson's bitterweed Hymenoxys torreyana, Torrey bitterweed Hypochaeris radicata, hairy cat's-ear Ionactis alpina, lava aster Ionactis stenomeres, Rocky Mountain aster Iva axillaris, small-flowered marsh-elder