FNA: Erythranthe bicolor vs. Erythranthe hardhamiae

	Erythranthe bicolor	Erythranthe hardhamiae
	yellow and white monkeyflower	Hardham's monkeyflower, Santa Lucia monkeyflower
Habit	Annuals, taprooted.	Annuals, taprooted.
Stems	erect, simple or branched from basal nodes, 4–30 cm, densely glandular-puberulent, hairs 0.05–0.1 mm, gland-tipped.	erect, simple or branched from basal nodes, (2–)3–13 cm, glabrous or minutely puberulent.
Leaves	cauline, basal not persistent; petiole 0 mm or short-attenuate; blade 1-veined or palmately 3-veined (in broader ones), narrowly elliptic to linear-lanceolate or linear-oblanceolate, 10–30 × 2–6 mm at mid stem, base attenuate, margins entire or remotely shallowly dentate to mucronulate, teeth 1–4 per side, apex acute, surfaces densely glandular-puberulent, hairs 0.05–0.1 mm, gland-tipped.	cauline, basal not persistent; petiole 0 mm; blade palmately 3-veined (in broader ones), linear to oblanceolate, 2–12 × 1–5 mm, base attenuate, margins entire, sometimes toothed, apex acute, surfaces glabrous or minutely puberulent.
Flowers	herkogamous, 2–8, from medial to distal nodes.	herkogamous, 1–12, from distal or medial to distal nodes.
Styles	minutely glandular.	glabrous.
Corollas	yellow, adaxial lip white, sometimes yellow, throat and abaxial limb red-spotted, bilaterally symmetric, weakly bilabiate; tube-throat funnelform, 8–12 mm, exserted beyond calyx margin; limb broadly expanded, lobes 2-fid, palate villous.	pink to purple, abaxial limb with 2 yellow palate ridges, bilaterally symmetric, strongly bilabiate; tube-throat funnelform, 5–10 mm, exserted 2–5 mm beyond calyx margin; limb expanded 7–13 mm, lobes notched, abaxial limb sparsely bearded.
Fruiting pedicels	(5–)7–20(–30) mm, densely glandular-puberulent, hairs 0.05–0.1 mm, gland-tipped.	ascending to often spreading horizontally, 10–60 mm.
Fruiting calyces	red-dotted, strongly angled, cylindric-campanulate, (5–)7–12 mm, margins distinctly toothed or lobed, densely glandular-puberulent, hairs 0.05–0.1 mm, gland-tipped, ribs corky, lobes pronounced, spreading.	becoming reddish, sometimes red-spotted, campanulate to cylindric, 4–6 mm, margins distinctly toothed or lobed, glabrous or minutely puberulent, ribs weak, lobes pronounced, erect, margins glabrous.
Capsules	included, 4–6 mm.	included, 4–5 mm.
Anthers	included, margins ciliate, glabrous.	included or slightly exserted, glabrous.
Stigmas		equal in length to corolla tube or exserted.

	Erythranthe bicolor	Erythranthe hardhamiae
Phenology	Flowering Apr–Jun.	Flowering Mar–Apr.
Habitat	Moist banks, serpentine and granite outcrops, seepage areas, volcanic mudflows, open red clay exposures.	Sandy soils near sandstone outcrops and chaparral.
Elevation	(100–)400–1700(–2500) m. ((300–)1300–5600(–8200) ft.)	300–800 m. (1000–2600 ft.)
Distribution	CA [WildflowerSearch map]	CA
Discussion	Erythranthe bicolor ranges from Shasta and Trinity counties south to Tulare County; the identity of apparently disjunct populations in San Bernardino County needs to be reexamined. (Discussion copyrighted by Flora of North America; reprinted with permission.)	Erythranthe hardhamiae is endemic to the central coast region in Monterey and San Luis Obispo counties. The species was previously included in E. palmeri but can be distinguished by having a wider limb (16–25 mm) than E. palmeri (8–15 mm) and pale pink flowers with a broad yellow palate and orifice. In contrast, E. palmeri has deep pink flowers with two yellow ridges on the palate. (Discussion copyrighted by Flora of North America; reprinted with permission.)
Source	FNA vol. 17, p. 390.	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. 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. 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. 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
Synonyms	Mimulus bicolor
Name authority	(Hartweg ex Bentham) G. L. Nesom & N. S. Fraga: Phytoneuron 2012-39: 36. (2012)	N. S. Fraga: Aliso 30: 64, figs. 23–25. (2012)
Web links	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	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 hardhamiae

yellow and white monkeyflower

Hardham's monkeyflower, Santa Lucia monkeyflower

Habit

Annuals, taprooted.

Stems

erect, simple or branched from basal nodes, 4–30 cm, densely glandular-puberulent, hairs 0.05–0.1 mm, gland-tipped.

erect, simple or branched from basal nodes, (2–)3–13 cm, glabrous or minutely puberulent.

Leaves

cauline, basal not persistent;

petiole 0 mm or short-attenuate;

blade 1-veined or palmately 3-veined (in broader ones), narrowly elliptic to linear-lanceolate or linear-oblanceolate, 10–30 × 2–6 mm at mid stem, base attenuate, margins entire or remotely shallowly dentate to mucronulate, teeth 1–4 per side, apex acute, surfaces densely glandular-puberulent, hairs 0.05–0.1 mm, gland-tipped.

cauline, basal not persistent;

petiole 0 mm;

blade palmately 3-veined (in broader ones), linear to oblanceolate, 2–12 × 1–5 mm, base attenuate, margins entire, sometimes toothed, apex acute, surfaces glabrous or minutely puberulent.

Flowers

herkogamous, 2–8, from medial to distal nodes.

herkogamous, 1–12, from distal or medial to distal nodes.

Styles

minutely glandular.

glabrous.

Corollas

yellow, adaxial lip white, sometimes yellow, throat and abaxial limb red-spotted, bilaterally symmetric, weakly bilabiate;

tube-throat funnelform, 8–12 mm, exserted beyond calyx margin;

limb broadly expanded, lobes 2-fid, palate villous.

pink to purple, abaxial limb with 2 yellow palate ridges, bilaterally symmetric, strongly bilabiate;

tube-throat funnelform, 5–10 mm, exserted 2–5 mm beyond calyx margin;

limb expanded 7–13 mm, lobes notched, abaxial limb sparsely bearded.

Fruiting pedicels

(5–)7–20(–30) mm, densely glandular-puberulent, hairs 0.05–0.1 mm, gland-tipped.

ascending to often spreading horizontally, 10–60 mm.

Fruiting calyces

red-dotted, strongly angled, cylindric-campanulate, (5–)7–12 mm, margins distinctly toothed or lobed, densely glandular-puberulent, hairs 0.05–0.1 mm, gland-tipped, ribs corky, lobes pronounced, spreading.

becoming reddish, sometimes red-spotted, campanulate to cylindric, 4–6 mm, margins distinctly toothed or lobed, glabrous or minutely puberulent, ribs weak, lobes pronounced, erect, margins glabrous.

Capsules

included, 4–6 mm.

included, 4–5 mm.

Anthers

included, margins ciliate, glabrous.

included or slightly exserted, glabrous.

Stigmas

equal in length to corolla tube or exserted.

Erythranthe bicolor

Erythranthe hardhamiae

Phenology

Flowering Apr–Jun.

Flowering Mar–Apr.

Habitat

Moist banks, serpentine and granite outcrops, seepage areas, volcanic mudflows, open red clay exposures.

Sandy soils near sandstone outcrops and chaparral.

Elevation

(100–)400–1700(–2500) m. ((300–)1300–5600(–8200) ft.)

300–800 m. (1000–2600 ft.)

Distribution

[WildflowerSearch map]

Discussion

Erythranthe bicolor ranges from Shasta and Trinity counties south to Tulare County; the identity of apparently disjunct populations in San Bernardino County needs to be reexamined.

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

Erythranthe hardhamiae is endemic to the central coast region in Monterey and San Luis Obispo counties. The species was previously included in E. palmeri but can be distinguished by having a wider limb (16–25 mm) than E. palmeri (8–15 mm) and pale pink flowers with a broad yellow palate and orifice. In contrast, E. palmeri has deep pink flowers with two yellow ridges on the palate.

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

Source

FNA vol. 17, p. 390.

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. 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. 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. 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

Synonyms

Mimulus bicolor

Name authority

(Hartweg ex Bentham) G. L. Nesom & N. S. Fraga: Phytoneuron 2012-39: 36. (2012)

N. S. Fraga: Aliso 30: 64, figs. 23–25. (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

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Erythranthe bicolor

Erythranthe hardhamiae

Erythranthe bicolor

Erythranthe hardhamiae