[Monkey Flowers Found East of the Cascade
Mts. of Oregon and Washington]
Primrose Monkeyflower, Primrose Monkey-flower, Primrose Monkey Flower
Erythranthe primuloides
Synonyms: Mimulus pilosellus, Mimulus primuloides, Mimulus primuloides var. minimus, Mimulus primuloides var. pilosellus, Mimulus primuloides ssp. primuloides, Mimulus primuloides var. primuloides
Primrose monkeyflower
as seen in moist meadows in Logan Valley, about one-half mile west of Big Creek Campground, Malheur National Forest........July 16,
2010.
The
photo at right shows primrose monkey flower as seen
from Paulina Lakes, Newberry Crater National Monument.
Characteristics:
Primrose monkey flower is a small wildflower forming dense mats
with all the leaves crowded at or near the ground. The stems are short, erect
or ascending, and up to 5 cm long. The leaves are oblanceolate with 3 veins
flaring from the base of the blade. The longest blades range from 0.7-4.5 cm
long.
The flowers are yellow with maroon dots, somewhat two-lipped,
and with notched, spreading petal tips. The corolla is 15-20 mm long and narrow,
the throats only several mm wide. The throat is a deeper yellow and hairy. Plants
to about 5-6 cm tall.
Habitat:
Primrose monkey flower is found in moist, wet meadows (especially
in moss or grass) from moderate to high elevation in the mountains.
Range:
Primrose monkey flower is found from the east side of the Cascade
Mts in Washington, south to California and eastward to central Idaho and Arizona.
- 
Primrose monkeyflower along the south shoreline of High Lake, Strawberry Mountain Wilderness.........July 17, 2013. The associated sedge is Carex canescens.
Primrose monkeyflower as seen along the East Fork Lostine River Trail #1662 in riparian meadows just south of Lost Lake, Eagle Cap Wilderness.........August 4, 2016.
The photo abaove shows a frontal view of the corolla of Primrose Monkey Flower
as seen along the nature trail at Conboy Lake National Wildlife Refuge........June
2000.
The photo above shows a side view of the calyx and corolla of
primrose monkey flower as seen along the nature trail at Conboy Lake National
Wildlife Refuge.........June 2000.
The photo above shows the leaves of primrose monkey flower as
seen along the nature trail at Conboy Lake National Wildlife Refuge.........June
2000. Note the glabrous leaves.
Paul Slichter