FNA: Erythranthe ptilota vs. Erythranthe scouleri

	Erythranthe ptilota	Erythranthe scouleri
	musk monkeyflower, musk-flower, sessile-leaf monkey-flower, wing-leaf monkeyflower	Columbia River monkey-flower, Scouler's monkey-flower
Habit	Perennials, rhizomatous, sometimes rooting at proximal nodes.	Perennials, rhizomatous, producing long, sparsely leafy runners from basal nodes.
Stems	prostrate, sometimes decumbent to ascending, few-branched, 20–80 cm, villous, hairs 1–2 mm, eglandular, sometimes mixed with much shorter stipitate-glandular ones, internodes evident.	erect, simple or few-branched, 15–80 cm, glabrous.
Leaves	cauline, basal not persistent, often congested; petiole 0 mm, rarely 1–2(–3) mm; blade pinnately veined, oblong-lanceolate, 30–70 × 10–22 mm, base rounded, margins denticulate to dentate, apex acute, surfaces villous, hairs 1–2 mm, eglandular, sometimes mixed with much shorter stipitate-glandular ones.	cauline, basal usually not persistent; petiole: proximals and medial 10–25 mm (gradually merging into blade), distals 0 mm; blade palmately (3–)5–7-veined to subpinnate, (proximal to medial) oblong-elliptic to oblong-lanceolate, 25–60 × 8–18 mm, usually 3–4 times longer than wide, base attenuate, margins evenly, shallowly dentate or crenate to mucronate or mucronulate, teeth 10–20 per side, sometimes more deeply toothed at base, apex obtuse to acute, surfaces glabrous.
Flowers	herkogamous, 4–10, from medial to distal nodes.	herkogamous, (1 or)2–8, from distal nodes.
Styles	glabrous.	minutely, prominently hirsutulous to villosulous.
Corollas	yellow, throat with fine blackish or brownish lines on all sides, weakly bilaterally or nearly radially symmetric, weakly bilabiate or nearly regular; tube-throat narrowly campanulate, 15–18 mm, exserted beyond calyx margin; lobe apex rounded.	yellow, without red markings, bilaterally symmetric, bilabiate; tube-throat funnelform, 20–24 mm, exserted 10–15 mm beyond calyx margin; limb expanded 22–30 mm.
Fruiting pedicels	(15–)22–50 mm, villous, hairs 1–2 mm, eglandular, sometimes mixed with much shorter stipitate-glandular ones.	20–25 mm, glabrous.
Fruiting calyces	wing- or plicate-angled, cylindric-campanulate, weakly inflated, 10–12 mm, villous-glandular, hairs gland-tipped, lobes distinctly spreading, strongly unequal, linear-lanceolate to narrowly triangular, 5–9 mm, apex long acuminate-apiculate.	ovoid, inflated, sagittally compressed, 13–14 mm, glabrous, throat closing.
Capsules	included, 6–8 mm.	unknown.
Anthers	included, finely hirtellous to hispidulous.	included, glabrous.

	Erythranthe ptilota	Erythranthe scouleri
Phenology	Flowering (May–)Jun–Aug.	Flowering May–Aug.
Habitat	Creek banks, gravel bars, flood plains, shallow ditches and natural drainages, swales, damp banks, wet sand, moist soils in coniferous woods, marshes, bogs.	Salt marshes, river banks.
Elevation	0–1000(–1900) m. (0–3300(–6200) ft.)	0–20 m. (0–100 ft.)
Distribution	CA; OR; WA; BC [WildflowerSearch map]	OR; WA
Discussion	Erythranthe ptilota is recognized by its prostrate to decumbent or decumbent-ascending habit, large, consistently sessile leaves, densely villous vestiture, long pedicels, large calyces and corollas, hispid-hirtellous anthers, and particularly by its long, strongly unequal, linear-triangular calyx lobes usually distally falcate. Leaf bases typically are truncate to rounded or subcordate. Rarely the leaves are short-petiolate, but in such cases, the distinctive leaf bases, vestiture, calyx morphology, and pubescent anthers are diagnostic. Erythranthe ptilota is widely sympatric with E. moschata but usually occurs at lower elevations and characteristically in wetter habitats. The epithet ptilota (Greek ptilotos, winged) alludes to a fancied winglike aspect of the pairs of sessile leaves. A population system of Erythranthe ptilota-like plants occurs in southern California, about 480 km disjunct from the main range of the species. These plants have the prostrate habit, large leaves, long pedicels, and large corollas of E. ptilota, but the calyx lobes are variable in length and usually do not show the characteristic attenuate-apiculate apices. The southern California plants are identified here as E. moschata. Erythranthe ptilota is a new name at specific rank for Mimulus moschatus var. sessilifolius [not E. sessilifolia (Maximowicz) G. L. Nesom]. (Discussion copyrighted by Flora of North America; reprinted with permission.)	Erythranthe scouleri is distinctive in its oblong-elliptic leaves with long-tapering bases and closely toothed margins, completely glabrous vestiture, long, leafy runners from basal cauline nodes, large corollas with broad limbs, and prominently hairy styles. Several features suggest a close relationship to E. decora, particularly its very large corollas, hairy styles, closely toothed leaf margins, tall, simple, and erect stems, numerous runners, and its geographic range. All collections apparently have been made near the mouth of the Columbia River in Clatsop and Columbia counties, Oregon (G. L. Nesom 2013d). Recent observations (Alexander John Wright, pers. comm.; photos http://www.inaturalist.org/observations/3537008) indicate that it also occurs in Wahkiakum County, Washington, in the Julia Butler Hansen Refuge. (Discussion copyrighted by Flora of North America; reprinted with permission.)
Source	FNA vol. 17, p. 402.	FNA vol. 17, p. 415.
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. primuloides, 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. shevockii, E. sierrae, E. suksdorfii, E. taylorii, E. thermalis, E. tilingii, E. trinitiensis, E. unimaculata, E. utahensis, E. verbenacea, E. washingtonensis, E. willisii
Synonyms	Mimulus moschatus var. sessilifolius	Mimulus scouleri, M. guttatus subsp. scouleri
Name authority	G. L. Nesom: Phytoneuron 2017-17: 4. (2017)	(Hooker) G. L. Nesom: Phytoneuron 2012-39: 44. (2012)
Web links	Local floras: BC, CA, WA Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search	Local floras: BC, OR, WA Local Web sites: Flora NW, PNW Herbaria WildflowerSearch iNaturalist (observations) LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Erythranthe scouleri

musk monkeyflower, musk-flower, sessile-leaf monkey-flower, wing-leaf monkeyflower

Columbia River monkey-flower, Scouler's monkey-flower

Habit

Perennials, rhizomatous, sometimes rooting at proximal nodes.

Perennials, rhizomatous, producing long, sparsely leafy runners from basal nodes.

Stems

prostrate, sometimes decumbent to ascending, few-branched, 20–80 cm, villous, hairs 1–2 mm, eglandular, sometimes mixed with much shorter stipitate-glandular ones, internodes evident.

erect, simple or few-branched, 15–80 cm, glabrous.

Leaves

cauline, basal not persistent, often congested;

petiole 0 mm, rarely 1–2(–3) mm;

blade pinnately veined, oblong-lanceolate, 30–70 × 10–22 mm, base rounded, margins denticulate to dentate, apex acute, surfaces villous, hairs 1–2 mm, eglandular, sometimes mixed with much shorter stipitate-glandular ones.

cauline, basal usually not persistent;

petiole: proximals and medial 10–25 mm (gradually merging into blade), distals 0 mm;

blade palmately (3–)5–7-veined to subpinnate, (proximal to medial) oblong-elliptic to oblong-lanceolate, 25–60 × 8–18 mm, usually 3–4 times longer than wide, base attenuate, margins evenly, shallowly dentate or crenate to mucronate or mucronulate, teeth 10–20 per side, sometimes more deeply toothed at base, apex obtuse to acute, surfaces glabrous.

Flowers

herkogamous, 4–10, from medial to distal nodes.

herkogamous, (1 or)2–8, from distal nodes.

Styles

glabrous.

minutely, prominently hirsutulous to villosulous.

Corollas

yellow, throat with fine blackish or brownish lines on all sides, weakly bilaterally or nearly radially symmetric, weakly bilabiate or nearly regular;

tube-throat narrowly campanulate, 15–18 mm, exserted beyond calyx margin;

lobe apex rounded.

yellow, without red markings, bilaterally symmetric, bilabiate;

tube-throat funnelform, 20–24 mm, exserted 10–15 mm beyond calyx margin;

limb expanded 22–30 mm.

Fruiting pedicels

(15–)22–50 mm, villous, hairs 1–2 mm, eglandular, sometimes mixed with much shorter stipitate-glandular ones.

20–25 mm, glabrous.

Fruiting calyces

wing- or plicate-angled, cylindric-campanulate, weakly inflated, 10–12 mm, villous-glandular, hairs gland-tipped, lobes distinctly spreading, strongly unequal, linear-lanceolate to narrowly triangular, 5–9 mm, apex long acuminate-apiculate.

ovoid, inflated, sagittally compressed, 13–14 mm, glabrous, throat closing.

Capsules

included, 6–8 mm.

unknown.

Anthers

included, finely hirtellous to hispidulous.

included, glabrous.

Erythranthe ptilota

Erythranthe scouleri

Phenology

Flowering (May–)Jun–Aug.

Flowering May–Aug.

Habitat

Creek banks, gravel bars, flood plains, shallow ditches and natural drainages, swales, damp banks, wet sand, moist soils in coniferous woods, marshes, bogs.

Salt marshes, river banks.

Elevation

0–1000(–1900) m. (0–3300(–6200) ft.)

0–20 m. (0–100 ft.)

Distribution

CA; OR; WA; BC

[WildflowerSearch map]

OR; WA

Discussion

Erythranthe ptilota is recognized by its prostrate to decumbent or decumbent-ascending habit, large, consistently sessile leaves, densely villous vestiture, long pedicels, large calyces and corollas, hispid-hirtellous anthers, and particularly by its long, strongly unequal, linear-triangular calyx lobes usually distally falcate. Leaf bases typically are truncate to rounded or subcordate. Rarely the leaves are short-petiolate, but in such cases, the distinctive leaf bases, vestiture, calyx morphology, and pubescent anthers are diagnostic. Erythranthe ptilota is widely sympatric with E. moschata but usually occurs at lower elevations and characteristically in wetter habitats. The epithet ptilota (Greek ptilotos, winged) alludes to a fancied winglike aspect of the pairs of sessile leaves.

A population system of Erythranthe ptilota-like plants occurs in southern California, about 480 km disjunct from the main range of the species. These plants have the prostrate habit, large leaves, long pedicels, and large corollas of E. ptilota, but the calyx lobes are variable in length and usually do not show the characteristic attenuate-apiculate apices. The southern California plants are identified here as E. moschata.

Erythranthe ptilota is a new name at specific rank for Mimulus moschatus var. sessilifolius [not E. sessilifolia (Maximowicz) G. L. Nesom].

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

Erythranthe scouleri is distinctive in its oblong-elliptic leaves with long-tapering bases and closely toothed margins, completely glabrous vestiture, long, leafy runners from basal cauline nodes, large corollas with broad limbs, and prominently hairy styles. Several features suggest a close relationship to E. decora, particularly its very large corollas, hairy styles, closely toothed leaf margins, tall, simple, and erect stems, numerous runners, and its geographic range. All collections apparently have been made near the mouth of the Columbia River in Clatsop and Columbia counties, Oregon (G. L. Nesom 2013d). Recent observations (Alexander John Wright, pers. comm.; photos http://www.inaturalist.org/observations/3537008) indicate that it also occurs in Wahkiakum County, Washington, in the Julia Butler Hansen Refuge.

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

Source

FNA vol. 17, p. 402.

FNA vol. 17, p. 415.

Parent taxa

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. primuloides, 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. shevockii, E. sierrae, E. suksdorfii, E. taylorii, E. thermalis, E. tilingii, E. trinitiensis, E. unimaculata, E. utahensis, E. verbenacea, E. washingtonensis, E. willisii

Synonyms

Mimulus moschatus var. sessilifolius

Mimulus scouleri, M. guttatus subsp. scouleri

Name authority

G. L. Nesom: Phytoneuron 2017-17: 4. (2017)

(Hooker) G. L. Nesom: Phytoneuron 2012-39: 44. (2012)

Web links

Local floras: BC, CA, WA
Local Web sites: CalFlora, CalPhotos, Flora NW, PNW Herbaria
WildflowerSearch
iNaturalist (observations)
LBJ Wildflower Center
SEINet
Plants of the World Online
Encyclopedia of Life
Wikipedia
Google Image Search

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).

Choose a data source: Flora of North America, OregonFlora, UW Burke Herbarium

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Erythranthe ptilota

Erythranthe scouleri

Erythranthe ptilota

Erythranthe scouleri