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Erythranthe inflatula

(Suksdorf) Nesom

Disappearing Monkeyflower

G3Vulnerable Found in 1 roadless area NatureServe Explorer →

G3VulnerableGlobal Rank

MediumThreat Impact

Identity

Unique IDELEMENT_GLOBAL.2.151173

Element CodePDSCR1B370

Record TypeSPECIES

ClassificationSpecies

Classification StatusStandard

Name CategoryVascular Plant

Endemicendemic to a single nation

KingdomPlantae

PhylumAnthophyta

ClassDicotyledoneae

OrderLamiales

FamilyPhrymaceae

GenusErythranthe

Synonyms

Mimulus evanescensR.J. Meinke

Concept Reference

Kartesz, J.T. 1999. A synonymized checklist and atlas with biological attributes for the vascular flora of the United States, Canada, and Greenland. First edition. In: Kartesz, J.T., and C.A. Meacham. Synthesis of the North American Flora, Version 1.0. North Carolina Botanical Garden, Chapel Hill, N.C.

Taxonomic Comments

The Flora of North America (vol. 17 2019) treats Mimulus evanescens as Erythranthe inflatula; these represent the same concept for the element. Morphologically allied with Mimulus breviflorus and M. latidens (Meinke 1995). Kartesz (1999) recognizes as distinct.

Conservation Status

Rank MethodLegacy Rank calculation - Excel v3.1x

Review Date2012-12-26

Change Date2012-12-26

Edition Date2012-12-26

Edition AuthorsVrilakas, Sue, rev. A. Frances (2012)

Threat ImpactMedium

Range Extent20,000-2,500,000 square km (about 8000-1,000,000 square miles)

Number of Occurrences21 - 80

Rank Reasons

Mimulus evanescens is relatively wide ranging and is currently known from at least 20 sites in Oregon and California. Specific plant numbers for the populations are not known but some populations number in the thousands. Past collections have ranged from as far north as Gilliam County, Oregon to western Idaho. The species is moderately threatened by cattle grazing and competition with non-native, invasive species.

Range Extent Comments

The historic range is from Idaho, Oregon and California. It is currently known from Lassen County, California and Lake County, Oregon. There is one older collection from Owyhee County, Idaho and four from Oregon (Crook, Gilliam, Grant and Harney Counties).

Occurrences Comments

This species is known from at least ten occurrences in Oregon. There are at least 11 occurrences from California observed within the last ten years. The one occurrence from Idaho is historical, last seen in 1949. A list of occurrences and herbarium specimens is found in Nesom (2012).

Threat Impact Comments

Major threats include cattle grazing and competition with non-native, invasive species. Changes to hydrological regimes in adjacent reservoirs that affect the timing and depth of water drawdown may also threaten this species. Off-road vehicles are a potential threat at least one site (Meinke 2007).

Ecology & Habitat

Habitat

Mimulus evanescens grows in sagebrush-juniper plant associations, among rocky rubble and boulders in vernally moist, heavy gravel (Meinke 1995). It is generally restricted to a narrow ecotone on fluctuating banks of intermittent streams or pools, between sagebrush on the upper bank and emergent, wetland species on the lower bank (Meinke 1995).

Terrestrial Habitats

Shrubland/chaparral

Other Nations (1)

United StatesN3

Province	Rank	Native
California	S2	Yes
Idaho	S1	Yes
Washington	SNR	Yes
Oregon	S2	Yes

Threat Assessments

Threat	Scope	Severity	Timing
2 - Agriculture & aquaculture	Large (31-70%)	Moderate or 11-30% pop. decline	High (continuing)
2.3 - Livestock farming & ranching	Large (31-70%)	Moderate or 11-30% pop. decline	High (continuing)
6 - Human intrusions & disturbance	Small (1-10%)	Negligible or <1% pop. decline	High (continuing)
6.1 - Recreational activities	Small (1-10%)	Negligible or <1% pop. decline	High (continuing)
7 - Natural system modifications	Large - small	Slight or 1-10% pop. decline	High (continuing)
7.2 - Dams & water management/use	Large (31-70%)	Slight or 1-10% pop. decline	High (continuing)
8 - Invasive & other problematic species, genes & diseases	Large (31-70%)	Moderate or 11-30% pop. decline	High (continuing)
8.1 - Invasive non-native/alien species/diseases	Large (31-70%)	Moderate or 11-30% pop. decline	High (continuing)

Plant Characteristics

DurationANNUAL

Economic Value (Genus)No

Roadless Areas (1)

California (1)

Area	Forest	Acres
Timbered Crater	Lassen National Forest	4,096

References (7)

Barker, W.R., G.L. Nesom, P.M. Beardsley, and N.S. Fraga. 2012. A taxonomic conspectus of Phrymaceae: A narrowed circumscriptions for <i>Mimulus</i>, new and resurrected genera, and new names and combinations. Phytoneuron 39:1-60.
Flora of North America Editorial Committee (FNA). 2019. Flora of North America north of Mexico. Vol. 17: Magnoliophyta: Tetrachondraceae to Orobanchaceae. Oxford Univ. Press, New York. xxiv + 737 pp.
Kartesz, J.T. 1999. A synonymized checklist and atlas with biological attributes for the vascular flora of the United States, Canada, and Greenland. First edition. In: Kartesz, J.T., and C.A. Meacham. Synthesis of the North American Flora, Version 1.0. North Carolina Botanical Garden, Chapel Hill, N.C.
Meinke, R.J. 1995. Mimulus evanescens (Scrophulariaceae): A new annual species from the Northern Great Basin. Great Basin Naturalist 55(3):249-257.
Meinke, R. J. 2007. Site management plan for <i>Mimulus evanescens</i> (Disappearing monkeyflower). Online. Available: http://www.fs.fed.us/r6/sfpnw/issssp/documents/planning-docs/cp-smp-va-miev-kfra-dog-hollow-reservoir-2007.pdf (Accessed 2012).
Nesom, G.L. 2012a. Taxonomy of Erythranthe sect. Mimulosma (Phrymaceae). Phytoneuron 41:1-36.
Tibor, Dave. Botanist for the California Native Plant Society, 1997-present.

Erythranthe inflatula

Habitat

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