FNA: Erythranthe caespitosa vs. Erythranthe purpurea

	Erythranthe caespitosa	Erythranthe purpurea
	large mountain monkey-flower, mountain monkeyflower, Olympic monkeyflower, subalpine monkeyflower	little purple monkeyflower, purple monkeyflower
Habit	Perennials, rhizomatous, rooting at proximal nodes, sometimes producing creeping, small-leaved runners, forming matted colonies, rhizomes filiform.	Annuals, taprooted.
Stems	procumbent or decumbent to decumbent-ascending, delicate, usually in masses, terete or flattish, branched, 3–10 cm, glabrous, minutely hirtellous, or stipitate-glandular.	erect, simple or branched from basal nodes, 3–10 cm, minutely puberulent.
Leaves	basal and cauline; petiole: proximals 2–5 mm, distals 0 mm; blade often purple beneath, palmately 3-veined, orbicular to narrowly elliptic or ovate, proximals usually sublyrate, 3–12 mm, becoming larger distally, base cuneate to a short petiole, margins entire, mucronulate, or barely denticulate, apex obtuse, surfaces sparsely to moderately puberulent, hairs minute, stipitate-glandular.	cauline, basal not persistent; petiole 0 mm; blade palmately 3–5-veined, elliptic to lanceolate, 4–15 × 1–5 mm, base truncate to truncate-cordate, clasping, margins entire, sometimes toothed, apex acute to obtuse, surfaces minutely puberulent.
Flowers	herkogamous, 1–3, from distal nodes, commonly solitary.	herkogamous, 1–22, from distal or medial to distal nodes.
Styles	minutely hirtellous.	glabrous.
Corollas	yellow, dark red-spotted, bilaterally symmetric, bilabiate; tube-throat broadly funnelform to cylindric-funnelform, 15–18 mm, exserted beyond calyx margin; abaxial limb with deflexed-spreading lobes, adaxial with ascending lobes, palate partially closed.	pink to purple, adaxial limb darker than abaxial, abaxial limb with yellow markings, bilaterally symmetric, strongly bilabiate; tube-throat cylindric to funnelform, 7–13 mm, exserted beyond calyx margin; limb expanded 7–10 mm, bilabiate, 3 abaxial lobes notched, 2 adaxial nearly entire, abaxial limb sparsely bearded.
Fruiting pedicels	10–30(–40) mm, sparsely to moderately villous, hairs short, gland-tipped, sometimes hirtellous.	ascending to often spreading horizontally, 13–57(–70) mm.
Fruiting calyces	broadly campanulate, inflated, sagittally compressed, 7–15 mm, glabrous, minutely hirtellous, or stipitate-glandular, throat closing, proximalmost lobe pair upcurving, distalmost 3–5 mm, prominently protruding.	becoming reddish, campanulate, 3–8 mm, margins distinctly toothed or lobed, minutely puberulent, ribs thickened, lobes pronounced, erect, margins glabrous.
Capsules	included, 4–5 mm.	included, 3–8 mm.
Anthers	included, glabrous.	included, glabrous.

	Erythranthe caespitosa	Erythranthe purpurea
Phenology	Flowering Jul–Sep.	Flowering May–Jun.
Habitat	Alpine meadows and slopes, stream banks, wet rocks in streams, wet crevices, talus.	Moist openings along streams, swales, and depressions, pine duff in yellow pine forests, margins of dry meadows.
Elevation	1100–2000(–2300) m. (3600–6600(–7500) ft.)	1900–2800 m. (6200–9200 ft.)
Distribution	WA; BC [WildflowerSearch map]	CA; Mexico (Baja California) [WildflowerSearch map]
Discussion	Erythranthe caespitosa is endemic to northwestern and central Washington (Cascade and Olympic mountains) and adjacent British Columbia (Cascades, Selkirk Mountains and Chilliwack Valley, Coast Mountains). The plants have consistently small leaves with subentire margins, and the stems are consistently procumbent to decumbent-ascending, usually forming matted colonies. Erythranthe caespitosa and E. tilingii appear to be sympatric in counties of northwestern Washington, but this needs to be verified in the field. (Discussion copyrighted by Flora of North America; reprinted with permission.)	Erythranthe purpurea is restricted to the San Bernardino Mountains in San Bernardino County and is disjunct in the Sierra San Pedro Mártir in Baja California, Mexico. (Discussion copyrighted by Flora of North America; reprinted with permission.)
Source	FNA vol. 17, p. 409.	FNA vol. 17, p. 388.
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. 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. 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. 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
Synonyms	Mimulus scouleri var. caespitosus, M. caespitosus, M. tilingii var. caespitosus	Mimulus purpureus, M. purpureus var. pauxillus
Name authority	(Greene) G. L. Nesom: Phytoneuron 2012-39: 43. (2012)	(A. L. Grant) N. S. Fraga: Phytoneuron 2012-39: 35. (2012)
Web links	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	Local floras: CA Local Web sites: CalFlora, CalPhotos WildflowerSearch iNaturalist (observations) LBJ Wildflower Center SEINet Plants of the World Online Encyclopedia of Life Wikipedia Google Image Search

Erythranthe purpurea

large mountain monkey-flower, mountain monkeyflower, Olympic monkeyflower, subalpine monkeyflower

little purple monkeyflower, purple monkeyflower

Habit

Perennials, rhizomatous, rooting at proximal nodes, sometimes producing creeping, small-leaved runners, forming matted colonies, rhizomes filiform.

Annuals, taprooted.

Stems

procumbent or decumbent to decumbent-ascending, delicate, usually in masses, terete or flattish, branched, 3–10 cm, glabrous, minutely hirtellous, or stipitate-glandular.

erect, simple or branched from basal nodes, 3–10 cm, minutely puberulent.

Leaves

basal and cauline;

petiole: proximals 2–5 mm, distals 0 mm;

blade often purple beneath, palmately 3-veined, orbicular to narrowly elliptic or ovate, proximals usually sublyrate, 3–12 mm, becoming larger distally, base cuneate to a short petiole, margins entire, mucronulate, or barely denticulate, apex obtuse, surfaces sparsely to moderately puberulent, hairs minute, stipitate-glandular.

cauline, basal not persistent;

petiole 0 mm;

blade palmately 3–5-veined, elliptic to lanceolate, 4–15 × 1–5 mm, base truncate to truncate-cordate, clasping, margins entire, sometimes toothed, apex acute to obtuse, surfaces minutely puberulent.

Flowers

herkogamous, 1–3, from distal nodes, commonly solitary.

herkogamous, 1–22, from distal or medial to distal nodes.

Styles

minutely hirtellous.

glabrous.

Corollas

yellow, dark red-spotted, bilaterally symmetric, bilabiate;

tube-throat broadly funnelform to cylindric-funnelform, 15–18 mm, exserted beyond calyx margin;

abaxial limb with deflexed-spreading lobes, adaxial with ascending lobes, palate partially closed.

pink to purple, adaxial limb darker than abaxial, abaxial limb with yellow markings, bilaterally symmetric, strongly bilabiate;

tube-throat cylindric to funnelform, 7–13 mm, exserted beyond calyx margin;

limb expanded 7–10 mm, bilabiate, 3 abaxial lobes notched, 2 adaxial nearly entire, abaxial limb sparsely bearded.

Fruiting pedicels

10–30(–40) mm, sparsely to moderately villous, hairs short, gland-tipped, sometimes hirtellous.

ascending to often spreading horizontally, 13–57(–70) mm.

Fruiting calyces

broadly campanulate, inflated, sagittally compressed, 7–15 mm, glabrous, minutely hirtellous, or stipitate-glandular, throat closing, proximalmost lobe pair upcurving, distalmost 3–5 mm, prominently protruding.

becoming reddish, campanulate, 3–8 mm, margins distinctly toothed or lobed, minutely puberulent, ribs thickened, lobes pronounced, erect, margins glabrous.

Capsules

included, 4–5 mm.

included, 3–8 mm.

Anthers

included, glabrous.

Erythranthe caespitosa

Erythranthe purpurea

Phenology

Flowering Jul–Sep.

Flowering May–Jun.

Habitat

Alpine meadows and slopes, stream banks, wet rocks in streams, wet crevices, talus.

Moist openings along streams, swales, and depressions, pine duff in yellow pine forests, margins of dry meadows.

Elevation

1100–2000(–2300) m. (3600–6600(–7500) ft.)

1900–2800 m. (6200–9200 ft.)

Distribution

WA; BC

[WildflowerSearch map]

CA; Mexico (Baja California)

[WildflowerSearch map]

Discussion

Erythranthe caespitosa is endemic to northwestern and central Washington (Cascade and Olympic mountains) and adjacent British Columbia (Cascades, Selkirk Mountains and Chilliwack Valley, Coast Mountains). The plants have consistently small leaves with subentire margins, and the stems are consistently procumbent to decumbent-ascending, usually forming matted colonies. Erythranthe caespitosa and E. tilingii appear to be sympatric in counties of northwestern Washington, but this needs to be verified in the field.

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

Erythranthe purpurea is restricted to the San Bernardino Mountains in San Bernardino County and is disjunct in the Sierra San Pedro Mártir in Baja California, Mexico.

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

Source

FNA vol. 17, p. 409.

FNA vol. 17, p. 388.

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. 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. 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. 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

Synonyms

Mimulus scouleri var. caespitosus, M. caespitosus, M. tilingii var. caespitosus

Mimulus purpureus, M. purpureus var. pauxillus

Name authority

(Greene) G. L. Nesom: Phytoneuron 2012-39: 43. (2012)

(A. L. Grant) N. S. Fraga: Phytoneuron 2012-39: 35. (2012)

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).

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

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Erythranthe caespitosa

Erythranthe purpurea

Erythranthe caespitosa

Erythranthe purpurea