UW Burke Herbarium species comparison

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Erythranthe primuloides

Erythranthe ampliata

primrose monkey-flower

Nez Perce monkey-flower
Habit Mat-forming perennial from long, thin rhizomes, the stem lax, up to 6 cm. long. Annuals with fibrous roots or threadlike taproot; stems 5-17 cm, erect to ascending, straight or sharply bent at nodes, typically heavily branched, 4-angled, sparse coverage of nearly unstalked glands, gland-tipped hairs to 0.2 mm.
Leaves

Leaves opposite, crowded near the ground, short-hairy abaxially (underside), viscid to glabrous adaxially (upperside);

leaves oblanceolate, sessile, nearly entire, 3-nerved from the base, 7-25 mm. long and 3-11 mm. wide.

Leaves cauline, basal leaves not persistent; petiolate, 8-20 mm;

blade broad-ovate to lanceolate, 8-25 mm long and 5-19 mm broad, venation palmate, wedge-shaped base, margins toothed or somewhat finely toothed, apex acute to obtuse, surfaces glandular and hairy as stems.
Flowers

Flowers solitary on slender pedicels up to 10 cm. long arising from the leaf clusters;

calyx narrow, 4-8 mm. long, mostly glabrous, the 5 teeth short, equal;

corolla yellow, often dotted with maroon, 1-2 cm. long, scarcely bilabiate, the 5 lobes spreading, shallowly notched, the throat somewhat flaring;

stamens 4.

Axillary flowers 1-10, emerging from nodes throughout; fruiting pedicels glandular-hairy as stems, 10-22 mm;

calyx tubular-campanulate, sometimes weakly inflated, 6-8 mm, margins with distinct serration or lobes, sparsely covered with minute stalked glands or not;

corolla yellow with occasional small white patches, lower limb with several brownish spots, bilaterally symmetric and distinctly bilabiate;

tube-throat broadly funnel-shaped, generally 8-12 mm, protruding beyond calyx margin;

lobes obovate-oblong with rounded or truncate apexes;

styles glabrous;

anthers not protruding, glabrous.
Fruit(s)

Capsule.

Capsules 5-6 mm, included.

Erythranthe primuloides

Erythranthe ampliata
Flowering time June-August May-July
Habitat Wet meadows and boggy areas at middle to high elevations in the mountains. Basalt outcrops and seeps in grasslands.
Distribution
Occurring on both sides of the Cascades crest in Washington; British Columbia to California, east to Montana, Utah, Arizona, and New Mexico.
[WildflowerSearch map]
Occurring east of the Cascades crest in far southeastern Washington; southeastern Washington to western Montana, possibly also in southern British Columbia, southern Alberta, and northwestern Wyoming.
Origin Native Native
Conservation status Not of concern Threatened in Washington (WANHP)
Sibling taxa
E. alsinoides, E. ampliata, E. arvensis, E. breviflora, E. breweri, E. caespitosa, E. cardinalis, E. decora, E. dentata, E. floribunda, E. grandis, E. guttata, E. inflatula, E. jungermannioides, E. lewisii, E. microphylla, E. moschata, E. nasuta, E. patula, E. ptilota, E. pulsiferae, E. scouleri, E. suksdorfii, E. washingtonensis
E. alsinoides, E. arvensis, E. breviflora, E. breweri, E. caespitosa, E. cardinalis, E. decora, E. dentata, E. floribunda, E. grandis, E. guttata, E. inflatula, E. jungermannioides, E. lewisii, E. microphylla, E. moschata, E. nasuta, E. patula, E. primuloides, E. ptilota, E. pulsiferae, E. scouleri, E. suksdorfii, E. washingtonensis
Web links 
Unless otherwise noted, all data comes from the University of Washington's Burke Herbarium.



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