Flora of North America species comparison

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Erythranthe primuloides

Erythranthe washingtonensis

primrose monkey-flower

John Day or Washington monkeyflower, Washington monkey-flower
Habit Perennials, rhizomatous or stoloniferous, mat-forming, rhizomes or stolons flagelliform. Annuals, fibrous-rooted or filiform-taprooted.
Stems

erect to ascending, usually simple, 2–10(–20) cm, villous, internodes shortened.

erect to ascending, straight or geniculate at nodes, usually many-branched, terete, 5–25 cm, moderately puberulent-glandular to villous-glandular, hairs 0.1–0.8 mm, flattened, sometimes vitreous, distinctly multicellular, gland-tipped.
Leaves

all basal or near basal, often rosulate;

petiole 0 mm;

blade palmately 3-veined, oblanceolate to elliptic-obovate, 7–40 × 4–12 mm, base cuneate to attenuate, margins entire, distally denticulate to dentate, or sharply serrate-dentate, apex acute to obtuse, abaxial surface glabrous, adaxial glabrous or glabrate to sparsely to densely long-villous, eglandular.

cauline, basal not persistent;

petiole 2–14 mm;

blade palmately veined, deltate or ovate to ovate-lanceolate, 4–16(–23) × 2–11(–16) mm, base rounded to cuneate or truncate, margins denticulate or entire, apex acute, surfaces moderately puberulent-glandular to villous-glandular, hairs 0.1–0.8 mm, flattened, sometimes vitreous, distinctly multicellular, gland-tipped.
Flowers

herkogamous, 1.

herkogamous, 1–6, from proximal to distal nodes.
Styles

glabrous.

hispid-hirtellous.
Corollas

yellow to orange-yellow, usually brown-spotted abaxially, base of each abaxial lobe usually with a larger reddish brown spot, bilaterally or nearly radially symmetric, weakly bilabiate or nearly regular, densely hirsute on abaxial side of opening;

tube-throat narrowly campanulate, 15–20 mm, exserted beyond calyx margin;

lobes broadly obovate-oblong, apex rounded- or truncate-notched, throat open, palate densely villous, abaxial ridges prominent.

yellow with small reddish brown dots, abaxial limb with 2 white patches (abaxial ridges), bilaterally symmetric, strongly bilabiate;

tube-throat funnelform, 8–10 mm, exserted beyond calyx margin;

limb expanded 7–10 mm, lobes obovate-oblong, apex rounded to rounded-cuneate.
Fruiting pedicels

30–110(–130) mm, glabrous or sparsely stipitate-glandular near base.

divergent at nearly right angles, 20–50 mm, densely, minutely stipitate-glandular.
Fruiting calyces

tubular-campanulate, weakly or not inflated, 6–8 mm, glabrous.

greenish, ridge-angled, tubular, weakly inflated, 6–8 mm, margins distinctly toothed or lobed, densely, minutely stipitate-glandular, lobes pronounced, erect.
Capsules

included, 6–7 mm.

included, 5–8.5 mm.
Anthers

slightly exserted, margins ciliate, glabrous.

included, glabrous.
2n

= 34.

= 32.

Erythranthe primuloides

Erythranthe washingtonensis
Phenology Flowering Jun–Aug. Flowering May–Sep.
Habitat Wet meadows, seeps, streamsides. Shallow basalt gravel in narrow channels and intermittent streams, sandy stream banks, open slopes, rocky shelves near seeps.
Elevation 600–3400 m. (2000–11200 ft.) 700–1300 m. (2300–4300 ft.)
Distribution
from FNA
AZ; CA; ID; MT; NM; NV; OR; UT; WA
[WildflowerSearch map]
from FNA
OR
[WildflowerSearch map]
Discussion

Flowers in Erythranthe primuloides and E. linearifolia characteristically appear to be scapose, but the scapes are pedicels arising from axils of greatly foreshortened stems. Occasionally in both species the internodes may lengthen somewhat, and the leaves are not so densely clustered at the base of the stems.

In northern Klamath, western Deschutes, and eastern Douglas counties, Oregon, an area within the range of typical populations, Erythranthe primuloides has distinctively large corollas (limbs 10–15 mm wide). Apparent clones of large-flowered and smaller-flowered plants sometimes grow in close proximity or even intermixed, appearing as two different entities.

(Discussion copyrighted by Flora of North America; reprinted with permission.)

Erythranthe washingtonensis is considered to be extirpated in Washington by the Washington Natural Heritage Program.

(Discussion copyrighted by Flora of North America; reprinted with permission.)
Source FNA vol. 17, p. 389. FNA vol. 17, p. 396.
Parent taxa Phrymaceae > Erythranthe Phrymaceae > Erythranthe
Sibling taxa
E. acutidens, E. alsinoides, E. ampliata, E. androsacea, E. arenaria, E. arenicola, E. arvensis, E. barbata, E. bicolor, E. brachystylis, E. breviflora, E. breweri, E. caespitosa, E. calcicola, E. calciphila, E. cardinalis, E. carsonensis, E. charlestonensis, E. chinatiensis, E. cinnabarina, E. corallina, E. cordata, E. decora, E. dentata, E. diffusa, E. discolor, E. eastwoodiae, E. erubescens, E. exigua, E. filicaulis, E. filicifolia, E. floribunda, E. gemmipara, E. geniculata, E. geyeri, E. glaucescens, E. gracilipes, E. grandis, E. grayi, E. guttata, E. hallii, E. hardhamiae, E. hymenophylla, E. inamoena, E. inconspicua, E. inflatula, E. jungermannioides, E. laciniata, E. latidens, E. lewisii, E. linearifolia, E. marmorata, E. michiganensis, E. microphylla, E. minor, E. montioides, E. moschata, E. nasuta, E. norrisii, E. nudata, E. palmeri, E. pardalis, E. parishii, E. parvula, E. patula, E. percaulis, E. ptilota, E. pulsiferae, E. purpurea, E. regni, E. rhodopetra, E. rubella, E. scouleri, E. shevockii, E. sierrae, E. suksdorfii, E. taylorii, E. thermalis, E. tilingii, E. trinitiensis, E. unimaculata, E. utahensis, E. verbenacea, E. washingtonensis, E. willisii
E. acutidens, E. alsinoides, E. ampliata, E. androsacea, E. arenaria, E. arenicola, E. arvensis, E. barbata, E. bicolor, E. brachystylis, E. breviflora, E. breweri, E. caespitosa, E. calcicola, E. calciphila, E. cardinalis, E. carsonensis, E. charlestonensis, E. chinatiensis, E. cinnabarina, E. corallina, E. cordata, E. decora, E. dentata, E. diffusa, E. discolor, E. eastwoodiae, E. erubescens, E. exigua, E. filicaulis, E. filicifolia, E. floribunda, E. gemmipara, E. geniculata, E. geyeri, E. glaucescens, E. gracilipes, E. grandis, E. grayi, E. guttata, E. hallii, E. hardhamiae, E. hymenophylla, E. inamoena, E. inconspicua, E. inflatula, E. jungermannioides, E. laciniata, E. latidens, E. lewisii, E. linearifolia, E. marmorata, E. michiganensis, E. microphylla, E. minor, E. montioides, E. moschata, E. nasuta, E. norrisii, E. nudata, E. palmeri, E. pardalis, E. parishii, E. parvula, E. patula, E. percaulis, E. primuloides, E. ptilota, E. pulsiferae, E. purpurea, E. regni, E. rhodopetra, E. rubella, E. scouleri, E. shevockii, E. sierrae, E. suksdorfii, E. taylorii, E. thermalis, E. tilingii, E. trinitiensis, E. unimaculata, E. utahensis, E. verbenacea, E. willisii
Synonyms Mimulus primuloides, M. nevadensis, M. pilosellus, M. primuloides var. minimus, M. primuloides var. pilosellus Mimulus washingtonensis
Name authority (Bentham) G. L. Nesom & N. S. Fraga: Phytoneuron 2012-39: 35. (2012) (Gandoger) G. L. Nesom: Phytoneuron 2012-39: 39. (2012) — (as washingtoniensis)
Web links 
Unless otherwise noted, all data comes from the online version of the Flora of North America, who have made most of their content available via a Creative Commons license (CC BY 4.0).



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