Erythronium pluriflorum - Shevock, Bartel & Allen
Shuteye Peak Fawnlily
Taxonomic Status: Accepted
Related ITIS Name(s): Erythronium pluriflorum Shevock, Bartel & Allen (TSN 196385)
Unique Identifier: ELEMENT_GLOBAL.2.129316
Element Code: PMLIL0U0Q0
Informal Taxonomy: Plants, Vascular - Flowering Plants - Lily Family
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Monocotyledoneae Liliales Liliaceae Erythronium
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Concept Reference
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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.
Concept Reference Code: B94KAR01HQUS
Name Used in Concept Reference: Erythronium pluriflorum
Conservation Status
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NatureServe Status

Global Status: G2
Global Status Last Reviewed: 29Oct2012
Global Status Last Changed: 20Aug2013
Ranking Methodology Used: Ranked by calculator
Rounded Global Status: G2 - Imperiled
Reasons: Only six populations known to be extant, all apparently in good to fair condition within the Sierra National Forest. Camping poses a potential threat to one of the occurrences. The greatest threat to the species is climate change as its habitat requirements include a sliver of area in the subalpine Sierra Nevadas, California. Further, in these subalpine areas plants are found in very open coniferous forest, at high elevations and in bedrock crevices where humus has accumulated.
Nation: United States
National Status: N2

U.S. & Canada State/Province Status
Due to latency between updates made in state, provincial or other NatureServe Network databases and when they appear on NatureServe Explorer, for state or provincial information you may wish to contact the data steward in your jurisdiction to obtain the most current data. Please refer to our Distribution Data Sources to find contact information for your jurisdiction.
United States California (S2)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent Comments: California endemic from Madera county and calculated at 5 sq km (CNDDB 2008).

Area of Occupancy: 26-500 4-km2 grid cells
Area of Occupancy Comments: There are 8, 2 x2 sq km grid cells that make up the area of occupancy for this species (CNDDB 2008).

Number of Occurrences: 6 - 20
Number of Occurrences Comments: Six presumed extant occurrences, three described as in "excellent" condition, two as "good", and one "fair" (California Natural Diversity Database, 1997, 2010).

Population Size Comments: In the late 1980's at least two of the populations had millions of plants, but these numbers seem to have declined by 1990 in at least one of the sites. Other populations report hundreds of individuals, but no surveys have been conducted. As of 2010, it is difficult to say what the population size is, since it appears that surveys have not been completed since the late 1980s/early 1990s. The original description of this species describes it as locally abundant, reporting two of the populations with millions of individuals (Shevock et al. 1990).

Number of Occurrences with Good Viability/Integrity: Few (4-12)
Viability/Integrity Comments: Of the six occurrences 5 are either considered of 'good' or 'excellent' viability (CNDDB element occurrence data 2010).

Overall Threat Impact Comments: One population is threatened by people camping, but there are no recorded threats for other occurrences (California Department of Fish and Game, 1997, 2010). Given that this species is highly restricted in its range, and occurs in a subalpine habitat, makes it vulnerable to climate change. Further, Shevock et al. (1990) mention that a shift to a warmer and drier climate could lead to a smaller area of available habitat and an increase in fragmented habitat. Fragmented habitat can have adverse affects not only in available habitat, but also in increasing the distance by which pollination is to take place.

Short-term Trend: Decline of <30% to relatively stable
Short-term Trend Comments: The short term trend for this species is likely either stable or slightly declining. It occurs in a remote area in the Sierra Nevadas with few threats, except camping at one occurrence and possibly climate change given its subalpine habitat requirement.

Long-term Trend: Unknown

Environmental Specificity: Very narrow. Specialist or community with key requirements scarce.
Environmental Specificity Comments: The habitat requirements of this species are highly specific, including a very small area of subalpine Sierra Nevadas in California.

Other NatureServe Conservation Status Information

Distribution
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Global Range: California endemic from Madera county and calculated at 5 sq km (CNDDB 2008).

U.S. States and Canadian Provinces

Due to latency between updates made in state, provincial or other NatureServe Network databases and when they appear on NatureServe Explorer, for state or provincial information you may wish to contact the data steward in your jurisdiction to obtain the most current data. Please refer to our Distribution Data Sources to find contact information for your jurisdiction.
Color legend for Distribution Map

U.S. & Canada State/Province Distribution
United States CA

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
CA Madera (06039)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
18 Upper San Joaquin (18040006)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Basic Description: Perennial herb from an elongate bulb of one fleshy scale; oblanceolate to elliptic leaves, 7-30 cm, more or less wavy-margined, green; yellow to aging-bronze flowers (Hickman, 1993).
Terrestrial Habitat(s): Bare rock/talus/scree, Forest - Conifer, Forest/Woodland, Grassland/herbaceous, Savanna, Woodland - Conifer
Habitat Comments: In upper montane coniferous forest, meadows, subalpine coniferous forest. Growing on rocky graitic outcrops and slopes; 2060 - 2550 m altitude (California Department of Fish and Game, 1997).
Economic Attributes Not yet assessed
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Management Summary
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Stewardship Overview: There is only one occurrence that is threatened by camping, and at this site designated camping areas may reduce the impact of campers simply by helping them to avoid the species. The greatest threat to this species is climate change, which could significantly reduce the amount of favorable habitat. Fragmentation of the landscape with appropriate habitat is a likely result of climate change. Even though climate change is certainly accelerated by human activities, it is difficult to predict what management actions could be taken to either prevent or mitigate this threat. If habitat fragmentation and/or reduction were to take place, one possible management action would be relocation of the populations to more suitable habitat, probably at a higher elevation.
Population/Occurrence Delineation Not yet assessed
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Population/Occurrence Viability
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U.S. Invasive Species Impact Rank (I-Rank) Not yet assessed
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Authors/Contributors
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NatureServe Conservation Status Factors Edition Date: 22Mar2010
NatureServe Conservation Status Factors Author: Oliver, L.
Management Information Edition Date: 02Apr2010
Management Information Edition Author: Oliver, L.

Botanical data developed by NatureServe and its network of natural heritage programs (see Local Programs), The North Carolina Botanical Garden, and other contributors and cooperators (see Sources).

References
Help
  • California Department of Fish and Game. 1997. RareFind 2 personal computer program. Information dated March 1999. Sacramento, California.

  • Flora of North America Editorial Committee. 2002a. Flora of North America North of Mexico. Vol. 26. Magnoliophyta: Liliidae: Liliales and Orchidales. Oxford Univ. Press, New York. xxvi + 723 pp.

  • Hickman, J. C., ed. 1993. The Jepson manual: Higher plants of California. University of California Press, Berkeley, CA. 1400 pp.

  • 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.

  • Shevock, J., J. Bartel, and G. Allen. 1990. Distribution, ecology, and taxonomy of Erythronium (Liliaceae) in the Sierra Nevada of California. Madrono 37(4): 261-273.

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