Wing-stem Monkey Flower, Chickweed Monkey Flower: Mimulus alsinoides -

Short-flowered Monkey Flower: Mimulus breviflorus - Annual from 3-20 cm tall. Often much branched. Corolla yellow, 4-7 mm long. Calyx with short, acute teeth.

Brewer's Monkey Flower: Mimulus breweri - Annual from 3-18 cm high, often reddish in color. Corolla light purple to red, or tube white with magenta at the base, 5-10 mm long. Corolla lobes rounded or notched at the tips. Calyx 3-7 mm long with short, acute teeth.

Bank Monkey Flower: Mimulus clivicola - Annual from 5-20 cm tall. Leaves 3-nerved. Corolla tube yellowish with purple lobes, the throat pinkish or yellow with red spots. Corolla is 1.5-2 cm long. Calyx 7-10 mm long with sharp teeth.

Cusick's Monkeyflower, Cusick's Monkey-flower, Cusick's Monkey Flower: Mimulus cusickii (Synonym: Eunanus cusickii) - Annual from 2-30 cm high. Corolla from 20-30 cm long, magenta to violet with 2 yellow patches in throat. Calyx 8-12 mm long with unequal lobes. Herbage densely glandular-pubescent.

Ephemeral Monkey Flower: Mimulus evanescens - Annual. Leaves broadly lanceolate to ovate. Corolla yellow and less than 8 mm long.

Purple-stemmed Monkey Flower: Mimulus floribundus - Annual from 5-50 cm tall. Corolla yellow, often streaked with red or with red dots. Corolla is 7-15 mm long. Calyx 4-8 mm long with acute teeth.

Common Monkeyflower, Common Monkey Flower, Seep Monkeyflower, Seep Monkey-flower, Yellow Monkey Flower: Mimulus guttatus (Synonnyms: Mimulus arvensis, Mimulus bakeri, Mimulus brachystylis, Mimulus clementinus, Mimulus cordatus, Mimulus cuspidata, Mimulus decorus, Mimulus equinnus, Mimulus glabratus var. ascendens, Mimulus glareosus, Mimulus grandiflorus, Mimulus grandis, Mimulus guttatus ssp. arenicola, Mimulus guttatus ssp. arvensis, Mimulus guttatus ssp. haidensis, Mimulus guttatus ssp. litoralis, Mimulus guttatus ssp. micranthus, Mimulus guttatus ssp. scouleri, Mimulus guttatus var. arvensis, Mimulus guttatus var. decorus, Mimulus guttatus var. depauperatus, Mimulus guttatus var. gracilis, Mimulus guttatus var. grandis, Mimulus guttatus var. guttatus, Mimulus guttatus var. hallii, Mimulus guttatus var. insignis, Mimulus guttatus var. laxus, Mimulus guttatus var. lyratus, Mimulus guttatus var. microphyllus, Mimulus guttatus var. nasutus, Mimulus guttatus var. puberulus, Mimulus hallii, Mimulus hirsutus, Mimulus langsdorffii, Mimulus langsdorffii var. argutus, Mimulus langsdorffii var. arvensis, Mimulus langsdorffii var. californicus, Mimulus langsdorffii var. grandis, Mimulus langsdorffii var. guttatus, Mimulus langsdofrfii var. insignis, Mimulus langsdorffii var. microphyllus, Mimulus langsdorffii var. minimus, Mimulus langsdorffii var. nasutus, Mimulus langsdorffii var. platyphyllus, Mimulus laxus, Mimulus longulus, Mimulus luteus var. depauperatus, Mimulus luteus var. gracilis, Mimulus lyratus, Mimulus maguirei, Mimulus marmoratus, Mimulus micranthus, Mimulus microphyllus, Mimulus nasutus, Mimulus nasutus var. micranthus, Mimulus paniculatus, Mimulus pardalis, Mimulus parishii, Mimulus petiolaris, Mimulus prionophyllus, Mimulus procerus, Mimulus puberulus, Mimulus puncticalyx, Mimulus rivularis, Mimulus scouleri, Mimulus subreniformis, Mimulus tenellus, Mimulus thermalis, Mimulus unimaculatus ) - Annual or perennial from 10-100 cm high. Flowers strongly 2-lipped, the corolla from 1-4 cm long. Flowers usually number more than 5 at the ends of the stems. The corolla is yellow with many hairs in the throat and red to brownish spots on the palate. Calyx up to 2 cm long, the upper the longest, the others curving inward. Plants of low to middle elevations. Similar to Mimulus tilingii.

Thinsepal Monkeyflower: Mimulus hymenophyllus -

Liverwort Monkey Flower, Columbia Monkeyflower: Mimulus jungermannioides - Perennial with weak to prostrate stems from 5-30 cm long. Corolla yellow with red spots in throat, from 13-18 mm long, 2-lipped. Calyx 6-7 mm long with broad, short lobes with a small point at the tip. Stem leaves petiolate, the blades ovate to hear-shaped.

Broad-toothed Monkeyflower: Mimulus latidens -

Lewis' Monkey Flower, Great Purple Monkey Flower: Mimulus lewisii - Perennial from 30-90 cm high. Corolla pinkish-purple, 3-5 cm long with yellowish throat and purple spots. Calyx 2-3 cm long with narrow teeth, roughly equal in length. Plant of medium to high elevation.

Musk-flowered Monkey flower: Mimulus moschatus - Plants perennial with weak, sometimes prostrate stems from 5-40 cm long. Leaves ovate to elliptic ovate, 1-5 cm long. Stems and leaves covered with gland-tipped, whitish hairs. Herbage feels slimy and may smell musky. Leaves pinnately veined and stem leaves petiolate. Flowers yellow with dark lines or spots. Calyx 7-13 mm long, the upper lobe slightly longer than the others.

Jepson's Monkeyflower: Mimulus nanus var. jepsonii (Synonym: Mimulus jepsonii, Mimulus microcarpus) -

Dwarf Monkeyflower, Dwarf Purple Monkeyflower, Dwarf Purple Monkey Flower: Mimulus nanus var. nanus (Synonyms: Eunanus austiniae, Eunanus nanus, Eunanus tolmiei, Mimulus austiniae, Mimulus microphyton, Mimulus nanus ssp. cascadensis, Mimulus nanus ssp. nanus, Mimulus reifschneiderae, Mimulus tolmiei, Mimulus washoensis) - Annual with branched stems from 1-12 cm high. Leaves on stems linear to oblanceolate from 1-3.5 cm long. Flowers purplish with yellow center and reddish spots around yellow. The calyx is 5-9 mm long, the lobes roughly equal.

Hairy Monkey Flower: Mimulus pilosus (now Mimetanthe pilosa) - A branched annual from 5-25 cm high. Herbage finely glandular haired. Leaves oblanceolate to narrowly elliptic, 1.5-4 cm long with 1-3 weak veins. Corolla yellow with 2 red-brown spots on lower lip, 6.5-9 mm long. Calyx 5-7.5 mm long, the lobes unequal. .

Primrose Monkeyflower, Primrose Monkey-flower, Primrose Monkey Flower: Mimulus primuloides (Synonyms: Mimulus nevadensis, Mimulus pilosellus, Mimulus primuloides var. minimus, Mimulus primuloides var. pilosellus, Mimulus primuloides ssp. primuloides, Mimulus primuloides var. primuloides) - Perennial. Leaves all basal and 3-veined. Leaves elliptic-oblanceolate. Yellow flowers solitary on leafless stems, each 5-20 mm long. The corolla lobes spread and are all notched. The calyx is 4-8 mm long, the lobes acute roughly equal.

Candelabrum Monkeyflower, Pulsifer's Monkeyflower: Mimulus pulsiferae -

Pygmy Monkeyflower: Mimulus pygmaeus -

Suksdorf's Monkey Flower, Miniature Monkey Flower: Mimulus suksdorfii - Annual from 1-7 cm high, often branched. Herbage with glandular hairs. Leaves on the stems, linear to lanceolate, 5-16 mm long and 1-3 mm wide. Yellow corolla 4-6.5 mm long, weakly 2-lipped. Calyx 3-5 mm long, reddish, the lobes subequal.

Large Mountain Monkey Flower, Large Mountain Monkey-flower, Tiling's Monkeyflower, Tiling's Monkey-flower: Mimulus tilingii (Synonyms: Mimulus implexus, Mimulus tilingii var. caespitosus, Mimulus tilingii var. corallina, Mimulus tilingii var. tilingii) - Perennial with stems from 5-30 cm tall. Herbage glabrous. Leaves 1- 3 cm long, ovate to elliptic in shape. Flowers 1-5 at the ends of the stems. Yellow corolla is 2-4 cm long with hairy palate. Calyx 1.4-2 cm long with the large upper tooth longer than the others. Plants of high elevation. Similar to Mimulus guttatus.

Tricolored Monkeyflower: Mimulus tricolor -

Washington Monkeyflower: Mimulus washingtonensis (Synonyms: Mimulus patulus ssp. montanus, Mimulus washingtonensis var. ampliatus, Mimulus washingtonensis var. washingtonensis) - Slender annual from 4-20 cm high, simple to branched. Herbage glandular haired. Corolla yellow with red-brown spots, 1-2 cm long. Corolla is strongly 2-lipped, the lower longer and flexed downward. Calyx 4.5-8 mm long, the short teeth roughly equal.