Species: Mimulus glabratus var. jamesii (Torr. & Gray ex Benth.) Gray

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Mimulus glabratus var. jamesii (Torr. & Gray ex Benth.) Gray

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TAXONOMY

Family:

Scrophulariaceae

Genus:

Mimulus

Species Synonyms:

Mimulus geyeri Torr.
Mimulus glabratus var. fremontii (Benth.) A.L. Grant
Mimulus inamoenus Greene
Mimulus jamesii Torr. & Gray ex Benth.
Mimulus jamesii var. fremontii Benth.
Mimulus reniformis Engelm. ex Benth.

Common Names:

small yellow monkeyflower
smooth monkey-flower
Fremont monkey-flower
round-leaved monkey-flower

DISTRIBUTION

Canada:

southeastern Saskatchewan – southern Manitoba – southern Ontario - Quebec

Saskatchewan:

southeastern Saskatchewan; Lower Qu’Appelle River

Ecoregion:

Aspen Parkland

HABITAT

Saskatchewan:

streamlet edges

Associated Species:

brooklime, fleshy starwort, jewelweed, prairie sedge, small bedstraw

RARITY STATUS

Provincial Status According
to Harms (2003):

Endangered

Nature Conservancy Status:

G5T5 S1

Saskatchewan Species at
Risk Status:

None

COSEWIC Status:

None

Small yellow monkeyflower is endangered because of rarity in Saskatchewan. This species is highly regionally restricted in the province. Possible threats have been identified.

SPECIES DESCRIPTION

Growth Habit:

perennial, semi-aquatic

Stems:

mostly creeping, weak, hairless or minutely hairy, rooting at the lower nodes

Leaves:

opposite, sessile, 1 – 4 cm long, 1.5 – 3 cm wide, upper leaves usually wider than long, oval to rounded or kidney-shaped, base rounded, margin saw-toothed

Inflorescence:

flowers solitary in leaf axils; stalks 1 – 4 cm long

Flowers:

large, showy, irregular; sepals 5 – 12 mm long, bell-shaped, lobes unequal, angled, green, becoming inflated in fruit; petals to 25 mm long, 2-lipped, upper lip spreading or relaxed, throat more or less open, bright yellow, often red-spotted, hairy in the throat

Fruits:

capsule 5 – 9 mm long; seeds brownish

MIMULUS KEY FOR SPECIES FOUND IN SASKATCHEWAN

1 Petals blue; stems 4-angled	M. ringens var. ringens
1 Petals yellow; stems round	2

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