Laurie Rockwell wrote:
This plant list is based on Shirley Lamour’s 1975 MA plant thesis, my findings, and those of Don Gayton, l ocal ecologist with FORREX and compiler of this list. We and MOE staff were excited to find almost 100 of the red-listed Dalles Milkvetch this year. It was last reported in Lamour`s findings and there is only one other (Okanogan) site in BC.
| Scientific name | Common name | Type | source | Native/Nonnative | comments |
| Acer glabrum | Douglas maple | tree | Rockwell | N | |
| Achillea millefolium | yarrow | forb | Larmour | N | |
| Achnatherum occidentale | stiff needlegrass | grass | Larmour | N | |
| Agoseris glauca | short-beaked agoseris | forb | Rockwell | N | |
| Alyssum desertorum | desert alyssum | forb | Larmour | NN | |
| Amelanchier alnifolia | saskatoon | shrub | Larmour | N | |
| Antennaria corymbosa | flat-top pussytoes | forb | Larmour | N | |
| Antennaria dimorpha | low pussytoes | forb | Larmour | N | |
| Antennaria parviflora | Nuttall’s pussytoes | forb | Larmour | N | |
| Antennaria rosea | rosy pussytoes | forb | Larmour | N | |
| Antennaria umbrinella | umber pussytoes | forb | Rockwell | N | |
| Apocynum androsaemifolium | spreading dogbane | forb | Larmour | N | |
| Aristida longiseta | red threeawn | grass | Larmour | N | |
| Arnica sororia | twin arnica | forb | Larmour | N | |
| Artemisia campestris | northern wormwood | forb | Larmour | N | |
| Artemisia dracunculus | tarragon | forb | Rockwell | N | |
| Artemisia frigida | prairie sagewort | forb | Larmour | N | |
| Artemisia tridentata | big sagebrush | shrub | Rockwell | N | |
| Asclepias speciosa | showy milkweed | forb | Rockwell | N | |
| Asparagus officinalis | garden asparagus | forb | Larmour | NN | |
| Astragalus collinus | hillside milkvetch | forb | Rockwell | N | |
| Astragalus miser | timber milkvetch | forb | Larmour | N | |
| Astragalus purshii | wollypod milkvetch | forb | Larmour | N | |
| Astragalus sclerocarpus | Dalles milkvetch | forb | Larmour | N | |
| Balsamorhiza sagittata | arrowleaf balsamroot | forb | Larmour | N | |
| Boletus edulis | king bolete | fungus | Rockwell | N | |
| Brickellia oblongifolia | narrow-leaved brickellia | forb | Martin | N | |
| Bromus tectorum | cheatgrass | grass | Larmour | NN | |
| Calamagrostis rubescens | pinegrass | grass | Larmour | N | |
| Calochortus macrocarpus | sagebrush mariposa lily | forb | Larmour | N | |
| Capsella bursa-pastoris | shepherd’s purse | forb | Larmour | NN | |
| Castilleja longispica | forb | Larmour | N | no record in BC | |
| Castilleja thompsonii | Thompson’s paintbrush | forb | Rockwell | N | |
| Ceanothus sanguineus | redstem ceanothus | shrub | Larmour | N | |
| Centaurea diffusa | diffuse knapweed | forb | Larmour | NN | |
| Chaenactis douglasii | hoary false yarrow | forb | Rockwell | N | |
| Chenopodium fremontii | Fremont’s goosefoot | forb | Larmour | N | |
| Chenopodium leptophyllum | narrow-leaved goosefoot | forb | Larmour | N | |
| Cirsium undulatum | wavy-leaved thistle | forb | Rockwell | N | |
| Cladonia fimbriata | powdered trumpet | lichen | Larmour | N | |
| Cladonia pyxidata | pebbled pixie-cup | lichen | Larmour | N | |
| Comandra umbellata v. pallida | pale comandra | forb | Larmour | N | previously C. pallida |
| Coscinodon calyptratus | steppe mouse-moss | moss | Rockwell | N | |
| Crepis atrabarba | slender hawksbeard | forb | Larmour | N | |
| Delphinium umbellatum | forb | Larmour | N | no record in BC | |
| Delphinum nuttallianum | upland larkspur | forb | Larmour | N | |
| Descurainia pinnata | western tansy mustard | forb | Larmour | N | |
| Diploschistes scruposis | lichen | Larmour | N | ||
| Eleagnus commutata | silverberry, wolf willow | shrub | Larmour | N | |
| Elymus cinereus | basin wildrye | grass | Rockwell | N | |
| Epilobium angustifolium | fireweed | forb | Rockwell | N | |
| Epilobium brachycarpum | tall annual willowherb | forb | Larmour | N | previously E. paniculatum |
| Ericameria nauseosa | common rabbit-brush | shrub | Larmour | N | previously Chrysothamnus nauseosus |
| Erigeron divergens | diffuse fleabane | forb | Larmour | N | |
| Erigeron filifolius | threadleaf fleabane | forb | Larmour | N | |
| Erigeron pumilus | shaggy fleabane | forb | Larmour | N | |
| Eriogonum heracleoides | parsnip-flowered buckwheat | forb | Larmour | N | |
| Eriogonum niveum | snow buckwheat | forb | Larmour | N | |
| Festuca campestris | rough fescue | grass | Larmour | N | previously F. scabrella |
| Festuca idahoensis | Idaho fescue | grass | Rockwell | N | |
| Festuca saximontana | Rocky Mountain fescue | grass | Larmour | N | |
| Gaillardia aristata | brown-eyed Susan | forb | Larmour | N | |
| Geum triflorum | old man’s whiskers | forb | Larmour | N | |
| Grimmia affinis | moss | Larmour | N | ||
| Gypsophila paniculata | baby’s breath | forb | Rockwell | NN | |
| Hesperostipa comata | needle-and-thread grass | grass | Larmour | N | |
| Heterotheca villosa | Golden-aster | forb | Larmour | N | previously Chrsyopsis villosa |
| Heuchera cylindrica | round-leaved alumroot | forb | Larmour | N | |
| Ipomopsis aggregata | scarlet gilia | forb | Larmour | N | previously Gilia aggregata |
| Juniperus scopulorum | Rocky Mountain juniper | shrub | Larmour | N | |
| Koeleria macrantha | junegrass | grass | Larmour | N | |
| Lactuca serriola | prickly lettuce | forb | Larmour | NN | |
| Lappula occidentalis | flatspine stickseed | forb | Larmour | N | previously L. redowski |
| Lepidium campestre | field pepper-grass | forb | Rockwell | NN | |
| Lepidium densiflorum | prairie pepper-grass | forb | Gayton | N | |
| Lesquerella douglasii | Columbia bladderpod | forb | Larmour | N | |
| Letharia vulpina | timber wolf | lichen | Larmour | N | |
| Lewisia rediviva | bitterroot | forb | Larmour | N | |
| Linanthus pungens | prickly phlox | forb | Larmour | N | previously Leptodactlylon pungens |
| Linaria genistifolia | Dalmatian toadflax | forb | Larmour | NN | |
| Lithophragma parviflorum | small-flowered woodland star | forb | Larmour | N | |
| Lithospermum ruderale | lemonweed | forb | Larmour | N | |
| Lomatium dissectum | fern-leaved desert-parsely | forb | Gayton | N | |
| Lomatium geyeri | Geyer’s desert-parsley | forb | Larmour | N | |
| Lomatium macrocarpum | large fruited desert parsley | forb | Larmour | N | |
| Mahonia aquifolium | tall Oregon grape | shrub | Larmour | N | |
| Microseris nutans | nodding microseris | forb | Larmour | N | |
| Opuntia fragilis | brittle prickly pear cactus | forb | Larmour | N | |
| Peltigera canina | dog pelt | lichen | Larmour | N | |
| Penstemon fruticosus | shrubby penstemon | forb | Larmour | N | |
| Phacelia hastata | silverleaf phacelia | forb | Larmour | N | |
| Phacelia linearis | threadleaf phacelia | forb | Larmour | N | |
| Philadelphus lewisii | mock-orange | shrub | Larmour | N | |
| Pinus ponderosa | ponderosa pine | tree | Larmour | N | |
| Plantago patagonica | woolly plantain | forb | Larmour | N | |
| Poa bulbosa | bulbous bluegrass | grass | Larmour | NN | |
| Poa compressa | Canada bluegrass | grass | Larmour | NN | |
| Poa pratensis | Kentucky bluegrass | grass | Larmour | NN | |
| Poa secunda | Sandberg’s bluegrass | grass | Larmour | N | |
| Polygonum douglasii | Douglas’ knotweed | forb | Rockwell | N | |
| Pseudotsuga menziesii | Douglas-fir | tree | Larmour | N | |
| Pseudoregneria spicata | bluebunch wheatgrass | grass | Larmour | N | |
| Pyrocomma carthamoides | Columbia goldenweed | forb | Larmour | N | previously Haplopappus carthamoides |
| Pyrola asarifolia | pink wintergreen | forb | Rockwell | N | |
| Ranunculus glaberrimus | sagebrush buttercup | forb | Larmour | N | |
| Rhinanthus minor | Yellow rattle | forb | Rockwell | N | |
| Rhytidiadelphus triquetris | electrified cat’s tail moss | moss | Larmour | N | |
| Ribes cereum | waxy currant | shrub | Rcokwell | N | |
| Rosa woodsii | prairie rose | shrub | Larmour | N | |
| Selaginella densa | compact selaginella | moss | Larmour | N | |
| Selaginella wallacei | Wallace’s selaginella | moss | Rockwell | N | |
| Silene antirrhina | sleepy catchfly | forb | Larmour | N | |
| Silene douglasii | Douglas’ campion | forb | Larmour | N | |
| Sporobolus cryptandrus | sand dropseed | grass | Rockwell | N | |
| Stephanomeria tenuifolia | narrow-leaved stephanomeria | forb | Rockwell | N | |
| Symphoricarpus albus | common snowberry | shrub | Larmour | N | |
| Taraxacum officinale | common dandelion | forb | Larmour | NN | |
| Tortula ruralis | sidewalk moss | moss | Larmour | N | |
| Tragopogon dubius | yellow salsify | forb | Larmour | NN | |
| Vulpia octoflora | six weeks fescue | grass | Larmour | N | |
| Woodsia scopulina | mountain cliff fern | fern | Larmour | N | |
| Zigadenus venenosus | meadow deathcamas | forb | Larmour | N |