Larkspurleaf Monkshook, Blue Rocket, Devil's Helmet, Leopard's Bane, Northern Monkshood, Wolfsbane, Women's Bane: Aconitum delphiniifolium ssp. delphiniifolium (Synonym: Aconitum delphiniifolium var. albiflorum) - Note: This and the following monkshood have been recently lumped together with no subspecies level recognition).
Dwarf Monkshood, Larkspurleaf Monkshood: Aconitum delphiniifolium ssp. paradoxum (Synonyma: Aconitum delphiniifolium ssp. paradoxum, Aconitum nivatum)
Drummond's Anemone: Anemone drummondii var. lithophila (Synonyms: Anemone globsa var. lithophila, Anemone lithophila)
Cut-leaved Anemone, Early Thimbleweed, Anemone multifide: Anemone multifida var. multifida (Synonyms: Anemone globosa, Anemone multifida var. hudsoniana, Anemone multifida var. nowasadii, Anemone multifida var. richardsiana, Anemone multifida var. sansonii)
Wild Narcissus, Narcissus Anemone, Narcissus-flowered Anemone, Narcissus-flowered Thimbleweed: Anemone narcissiflora
Northern Anemone, Small-flowered Anemone, Small-flowered Thimbleweed, Windflower: Anemone parviflora (Synonyms: Anemone borealis, Anemone parviflora var. grandiflora)
Pasqueflower, Prairie-smoke, Prairie-crocus, Pulsatille: Anemone patens var. multifida (Synonyms: Anemone patens var. nuttalliana, Anemone patens var. wolfgangiana, Pulsatilla patens ssp. asiatica, Pulsatilla patens ssp. multifida)
Richardson's Anemone, Yellow Anemone, Yellow Thimbleweed: Anemone richardsonii (Synonym: Anemone vahlii)
Cowslip, Cowflock, Kingcup, Buttercup, Yellow Marshmarigold: Caltha palustris (Synonyms: Caltha arctica, Caltha asarifolia, Caltha palustris ssp. asarifolia, Caltha palustris var. arctica, Caltha palustris var. asarifolia, Caltha palustris var. flabellifolia)
Arctic Larkspur, Dwarf Larkspur, Northern Larkspur: Delphinium brachycentrum (Synonym: Delphinium chamissonis)
Brown's Larkspur, Duncecap, Giant Larkspur, Hooker's Larkspur, Mountain Larkspur, Pale-flowered Larkspur, Sierra Larkspur, Tall Larkspur, Tower Larkspur, Western Larkspur: Delphinium glaucum (Synonyms: Delphinium scopulorum var. glaucum, Delphinium splendens)
Threadleaf Crowfoot, Water Buttercup, White Water Buttercup, White Water Crowfoot: Ranunculus aquatilis var. diffusus (Synonyms: Batrachium circinatum subsp. subrigidum, Batrachium flaccidum, Batrachium longirostris, Batrachium trichophyllum, Batrachium trichophyllum subsp. lutulentum, Ranunculus aquatilis var. calvescens, Ranunculus aquatilis var. capillaceus, Ranunculus aquatilis var. eradicatus, Ranunculus aquatilis var. harrisii, Ranunculus aquatilis var. longirostris, Ranunculus aquatilis var. porteri, Ranunculus aquatilis var. subrigidus, Ranunuculus circinatus var. subrigidus, Ranunculus confervoides, Ranunculus longirostris, Ranunculus subrigidus, Ranunculus trichophyllus, Ranunculus trichophyllus var. calvescens, Ranunculus trichophllus var. eradicatus, Ranunculus trichophyllus subsp. lutulentus)
Eschscholtz's Buttercup, Snow Buttercup: Ranunculus echschholtzii var. eschscholtzii (Synonyms: Ranunculus eschscholtzii var. typicus, Ranunculus nivalis var. eschscholtzii)
Creeping Buttercup, Greater Creeping Spearwort, Lesser Spearwort, Spearwort: Ranunculus flammula (Synonyms: Ranunculus flammula var. filiformis, Ranunculus reptans)
Arctic Buttercup, Ice Cold Buttercup, Modest Buttercup, Timberline Buttercup, Tundra Buttercup: Ranunculus gelidus (Synonyms: Ranunculus gelidus ssp. grayi, Ranunculus grayi, Ranunculus verecundus)
Gmelin's Buttercup, Lesser Yellow Water Buttercup, Yellow Water Crowfoot: Ranunculus gmelinii (Synonyms: Ranunculus gmelinii ssp. purshii, Ranunculus gmelinii var. hookeri, Ranunculus gmelinii var. limosus, Ranunculus gmelinii var. prolificus, Ranunculus purshii)
High Northern Buttercup: Ranunculus hyperboreus (Synonyms: Ranunculus hyperboreus ssp. arnellii, Ranunculus hyperboreus ssp. intertextus, Ranunculus hyperboreus var. samojedorum, Ranunculus hyperboreus var. tricrenatus, Ranunculus hyperboreus var. turquetilianus, Ranunculus natans var. intertextus)
Snow Buttercup: Ranunculus nivalis
Northern Buttercup: Ranunculus pedatifidus var. affinis (Synonyms: Ranunculus affinis, Ranunculus eastwoodianus, Ranunculus pedatifidus ssp. affinis)
Pennsylvania Buttercup: Ranunculus pensylvanicus ?
Pygmy Buttercup: Ranunculus pygmaeus (Synonym: Ranunculus pygmaeus var. langeanus)
Blister Buttercup, Celeryleaf Buttercup, Celery-leaf Buttercup, Cursed Buttercup, Cursed Crowfoot, Division Blister Buttercup: Ranunculus sceleratus var. multifidus (Synonym: Ranunculus sceleratus ssp. multifidus)
Sulphur Buttercup: Ranunculus sulphureus (Synonym: Ranunculus sulphureus var. intercedens)
Arctic Meadowrue, Arctic Meadowrue, Dwarf Meadow-rue: Thalictrum alpinum (Synonym: Thalictrum alpinum var. hebetum) - Plants low growing with stem either lacking leaves or only with one leaf. Inflorescence a simple raceme. Flowers perfect (flowers contain both male and female parts).
Fewflower Meadowrue, Few-flowered Meadowrue, Mountain Meadow Meadow-rue, Richardson's Meadowrue: Thalictrum sparsiflorum (Synonyms: Thalictrum sparsiflorum ssp. richardsonii, Thalictrum sparsiflorum var. nevadense, Thalictrum sparsiflorum var. richardsonii, Thalictrum sparsiflorum var. saximontanum) - Plants tall with branched stems and stem leaves. Inflorescence a panicle. Flowers perfect (flowers contain both male and female parts).