Roadless Areas
Home/Species/ Plumas Ivesia

Ivesia sericoleuca

(Rydb.) Rydb.

Plumas Ivesia

G2Imperiled Found in 2 roadless areas NatureServe Explorer →
G2ImperiledGlobal Rank
Very high - highThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.128826
Element CodePDROS0X0K0
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single state or province
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderRosales
FamilyRosaceae
GenusIvesia
Other Common Names
Plumas mousetail (EN) Plumas Mousetail (EN)
Concept Reference
Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
Taxonomic Comments
USFWS misspelled - I. 'SERICLEUCA' in Federal Register (9/93).
Conservation Status
Rank Method Rank calculation - Biotics v2
Review Date2024-05-03
Change Date2013-08-07
Edition Date2024-05-03
Edition AuthorsD. Gries (1997), rev. A. Olivero (2003), rev. A. Tomaino (2009); rev. R. Bittman (2013); rev. J. Johnson (2024)
Threat ImpactVery high - high
Range Extent1000-5000 square km (about 400-2000 square miles)
Number of Occurrences21 - 80
Rank Reasons
Ivesia sericoleuca is a perennial herb of the western United States where it is endemic to northeastern California. Past development of reservoirs, airports, and roads has led to habitat loss. It continues to be threatened by development, in addition to the widespread threats of grazing and road related threats and vehicle use. More information is needed to more clearly assess population trends.
Range Extent Comments
Ivesia sericoleuca occurs in the western United States where it is known only from northeastern California in the northern High Sierra Nevada and southern Modoc Plateau (Baldwin et al. 2009). Range extent was estimated using herbarium specimens, photo-based observations, and NatureServe Network occurrence data collected between 1993 and 2024 (CNDDB 2024, iNaturalist 2024, NatureServe 2024, SEINet 2024). It is long mistakenly reported from Nevada.
Occurrences Comments
By applying a 1 km separation distance to herbarium specimens, photo-based observations, and NatureServe Network occurrence data documented between 1993 and 2024, it is estimated that there are 70 occurrences range-wide (CNDDB 2024, iNaturalist 2024, NatureServe 2024, SEINet 2024).
Threat Impact Comments
The most widespread threat to Ivesia sericoleuca is grazing by cattle, sheep, and horses. The next largest threats are roads and off-road vehicles. All of these threats pose additional indirect threats such as spreading invasive species, altering hydrology in meadows, and altering fire cycles. Other threats include: non-motorized recreation, conversion to agriculture, residential and commercial development, trash dumping, and logging (CNDDB 2024).
Ecology & Habitat

Habitat

Ivesia sericoleuca grows in meadows and alkaline flats/gentle slopes, usually on volcanic substrates, sometimes on mixed-alluvium Eocene lake deposits. The habitat is generally vernally moist, drying later in the season; species sometimes also found around vernal pools or seeps. These open habitats are found within Sagebrush Scrub and Yellow Pine Forest communities at elevaions of 900 to 2,200 m. (CNDDB 2024, SEINet 2024)
Terrestrial Habitats
Forest/WoodlandForest - ConiferShrubland/chaparralGrassland/herbaceous
Palustrine Habitats
TEMPORARY POOLHERBACEOUS WETLAND
Other Nations (1)
United StatesN2
ProvinceRankNative
CaliforniaS2Yes
Threat Assessments
ThreatScopeSeverityTiming
1 - Residential & commercial developmentRestricted (11-30%)Serious - moderateModerate (short-term)
2 - Agriculture & aquacultureLarge (31-70%)Serious - moderateHigh (continuing)
2.1 - Annual & perennial non-timber cropsSmall (1-10%)Serious - moderateModerate (short-term)
2.3 - Livestock farming & ranchingLarge (31-70%)Serious - slightHigh (continuing)
4 - Transportation & service corridorsLarge - restrictedSerious - moderateHigh (continuing)
4.1 - Roads & railroadsLarge - restrictedSerious - moderateHigh (continuing)
6 - Human intrusions & disturbanceLarge (31-70%)Moderate or 11-30% pop. declineHigh (continuing)
6.1 - Recreational activitiesLarge (31-70%)Moderate or 11-30% pop. declineHigh (continuing)
7 - Natural system modificationsPervasive - largeSerious - moderateModerate (short-term)
7.1 - Fire & fire suppressionPervasive - largeSerious - moderateModerate (short-term)
7.2 - Dams & water management/useSmall (1-10%)Serious - moderateModerate (short-term)
8 - Invasive & other problematic species, genes & diseasesRestricted (11-30%)Moderate - slightHigh (continuing)
8.1 - Invasive non-native/alien species/diseasesRestricted (11-30%)Moderate - slightHigh (continuing)
9 - PollutionSmall (1-10%)Moderate - slightHigh (continuing)
9.4 - Garbage & solid wasteSmall (1-10%)Moderate - slightHigh (continuing)
11 - Climate change & severe weatherPervasive (71-100%)Serious - slightHigh (continuing)
11.1 - Habitat shifting & alterationPervasive (71-100%)Serious - slightHigh (continuing)

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Plant Characteristics
DurationPERENNIAL
Economic Value (Genus)No
Roadless Areas (2)
California (2)
AreaForestAcres
Bald MountainTahoe National Forest5,832
Castle PeakTahoe National Forest14,974
References (14)
  1. Baldwin, B.G., S. Boyd, D.J. Keil, R.W. Patterson, T.J. Rosatti and D.H. Wilken eds. 2009. Jepson Flora Project: Jepson Online Interchange for California Floristics. Regents of the University of California, Berkeley. Online. Available: http://ucjeps.berkeley.edu/interchange/ (accessed 2009).
  2. CalFlora. 2005. Information on California plants for education, research and conservation. Berkeley, California: The CalFlora Database [web application]. Available: http://www.calflora.org/. (Accessed 2005)
  3. California Native Plant Society (CNPS). 2001. Inventory of Rare and Endangered Plants of California (sixth edition). Rare Plant Scientific Advisory Committee, David P. Tibor, Convening Editor. California Native Plant Society. Sacramento, CA. x + 388pp.
  4. California Native Plant Society (CNPS). 2009. Inventory of Rare and Endangered Plants. California Native Plant Society. Sacramento, CA. Online. Available: http://www.cnps.org/inventory (accessed 2009).
  5. California Natural Diversity Database (CNDDB). 2024. RareFind Version 5.3.0. California Department of Fish and Game, Sacramento.
  6. Flora of North America Editorial Committee (FNA). 2014b. Flora of North America north of Mexico. Vol. 9. Magnoliophyta: Picramniaceae to Rosaceae. Oxford University Press, New York. xxiv + 713 pp.
  7. Graf, M. 1999. Plants of the Tahoe Basin: Flowering plants, trees, and ferns. California Native Plant Society Press, Sacramento and Univ. California Press, Berkeley. 308 pp.
  8. Hickman, J. C., ed. 1993. The Jepson manual: Higher plants of California. University of California Press, Berkeley, CA. 1400 pp.
  9. iNaturalist. 2024. Online. Available: https://www.inaturalist.org (accessed 2024).
  10. Kartesz, J.T. 1994. A synonymized checklist of the vascular flora of the United States, Canada, and Greenland. 2nd edition. 2 vols. Timber Press, Portland, OR.
  11. Munz, P.A., with D.D. Keck. 1959. A California flora. Univ. California Press, Berkeley. 1681 pp.
  12. Nakamura, G., and J. K. Nelson, eds. 2001. Illustrated field guide to selected rare plants of northern California. University of California Agriculture and Natural Resources publication 3395, Oakland, CA. 370 pp.
  13. Skinner, M.W., and B.M. Pavlik, eds. 1997 (1994). Inventory of rare and endangered vascular plants of California. 1997 Electronic Inventory Update of 1994 5th edition, California Native Plant Society, Special Publication No. 1, Sacramento.
  14. Southwest Environmental Information Network (SEINet). 2024. Collections Databases. Online. Available: https://swbiodiversity.org/seinet/collections/index.php (accessed 2024).