Mimulus guttatus DC.
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Family: Scrophulariaceae
Genus: Mimulus
Species Synonyms: Mimulus arvensis Greene
Mimulus bakeri Gandog.
Mimulus brachystylis Edwin
Mimulus clementinus Greene
Mimulus cuspidata Greene
Mimulus decorus (A.L. Grant) Suksdorf
Mimulus equinnus Greene
Mimulus glabratus var. ascendes Gray
Mimulus glareosus Greene
Mimulus grandiflorus J.T. Howell
Mimulus grandis (Greene) Heller
Mimulus guttatus ssp. arenicola Pennell
Mimulus guttatus ssp. arvensis (Greene) Munz
Mimulus guttatus var. arvensis (Greene) A.L. Grant
Mimulus guttatus var. decorus A.L. Grant
Mimulus guttatus var. depauperatus (Gray) A.L. Grant
Mimulus guttatus var. gracilis (Gray) Campbell
Mimulus langsdorfii var. argutus Greene
Mimulus langsdorfii var. arvensis (Greene) Jepson
Mimulus langsdorfii var. californicus Jepson
Mimulus langsdorfii var. grandis (Greene) Greene
Mimulus langsdorfii var. guttatus (Fisch. ex DC.) Jepson
Mimulus langsdorfii var. insignis (Greene) A.L. Grant
Mimulus langsdorfii var. minimus Henry
Mimulus langsdorfii var. nasutus (Greene) Jepson
Mimulus langsdorfii var. platyphyllus Greene
Mimulus laxus Pennell ex M.E. Peck
Mimulus longulus Greene
Mimulus luteus var. depauperatus Gray
Mimulus luteus var. gracilis Gray
Common Names: large yellow monkeyflower
common monkeyflower
Canada: southern Yukon – southwestern Mackenzie District – British Columbia – southern Alberta – southwestern Saskatchewan
Saskatchewan: southwestern Saskatchewan; Cypress Hills
Ecoregion: Cypress Upland
Saskatchewan: wet marshy streamlet shores, springy areas and bog edges, often under spruce woods
Associated Species: beaked sedge, bog birch, water sedge
Provincial Status According
to Harms (2003):
Nature Conservancy Status:
G5 S1
Saskatchewan Species at
Risk Status:
Large yellow monkeyflower is vulnerable because it is rare or uncommon in Saskatchewan. This species is restricted to one location in the province. It is usually locally numerous within limited areas. No threats are known or anticipated.
Growth Habit: 5 – 60 cm
Stems: annual or perennial, stout or weak, simple or branched, usually erect, rooting at the lower nodes, hairless to short hairy
Leaves: opposite, upper leaves sessile or clasping, lower leaves stalked, 1 – 5 cm long, oval to egg-shaped, margin coarsely square-toothed
Inflorescence: flowers solitary or in unbranched clusters; stalks slender, 1 – 3.5 cm long
Flowers: large, showy, irregular; sepals 1 – 2 cm long, bell-shaped, inflated in fruit; petals 2 – 4 cm long, strongly 2-lipped, lobes of the upper lip reflexed, bright yellow, commonly spotted with red, throat hairy
Fruits: capsule rounded; seeds many, brown
1 Petals blue; stems 4-angled
M. ringens var. ringens
1 Petals yellow; stems round
2 Stems mostly creeping; sepals 5 – 12 mm long; petal throat more or less open; upper leaves wider than long
M. glabratus var. jamesii
2 Stems erect; sepals longer than 12 mm; petal throat more or less closed; upper leaves longer than wide
M. guttatus