Neviusia cliftonii - Shevock, Ertter & Taylor
Shasta Snow-wreath
Taxonomic Status: Accepted
Related ITIS Name(s): Neviusia cliftonii Shevock, Ertter & Taylor (TSN 507435)
Unique Identifier: ELEMENT_GLOBAL.2.145922
Element Code: PDROS14020
Informal Taxonomy: Plants, Vascular - Flowering Plants - Rose Family
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Dicotyledoneae Rosales Rosaceae Neviusia
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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: Neviusia cliftonii
Conservation Status
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NatureServe Status

Global Status: G2
Global Status Last Reviewed: 18Aug2015
Global Status Last Changed: 22Nov2005
Rounded Global Status: G2 - Imperiled
Reasons: Endemic to California, Neviusia cliftonii is known from 15-25 occurrences near Lake Shasta in Shasta County. Threats are logging and mining. Most sites occur on USFS lands but none are fully protected. The habitat of this plant needs to be better understood.
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, occurs near Lake Shasta in Shasta County. The total range covers about 250 sq mi.

Area of Occupancy: 1-25 4-km2 grid cells
Area of Occupancy Comments: The current known populations cover about 400 acres.

Number of Occurrences: 21 - 80
Number of Occurrences Comments: Known from 15 occurrences plus there are 10 new field forms in the backlog. Some of the new forms may represent updates.

Population Size Comments: Thousands of plants (Bittman 1998).

Number of Occurrences with Good Viability/Integrity: Few (4-12)
Viability/Integrity Comments: 11 EO's are currently ranked good or better.

Overall Threat Impact: High
Overall Threat Impact Comments: Potentially threatened by logging and mining.

Short-term Trend: Unknown
Short-term Trend Comments: This plant was fairly recently discovered so we do not have trend information yet.

Long-term Trend: Unknown

Intrinsic Vulnerability Comments: Reasonably fragile due to narrow distribution and habitat (Bittman 1998).

Environmental Specificity: Very narrow. Specialist or community with key requirements scarce.
Environmental Specificity Comments: Occurs on and off of limestone but distribution is quite restricted.

Other NatureServe Conservation Status Information

Distribution
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Global Range: California endemic, occurs near Lake Shasta in Shasta County. The total range covers about 250 sq mi.

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 Shasta (06089)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
18 Lower Pit (18020003)+, Mccloud (18020004)+, Sacramento headwaters (18020005)+, Cow Creek (18020151)+, Clear Creek-Sacramento River (18020154)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Basic Description: Shrub, to 25dm. Leaves alternate, deciduous; blade ovate to cordate, lobes sharply toothed, sparsely strigose. Inflorescence umbel-like, flowers generally 3-5, petals clawed, white. Fruit an achene.
Palustrine Habitat(s): Riparian
Terrestrial Habitat(s): Forest/Woodland
Habitat Comments: Lower montane coniferous forest, riparian woodland; carbonate soils (Skinner, 1997).
Economic Attributes Not yet assessed
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Management Summary Not yet assessed
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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: 22Nov2005
NatureServe Conservation Status Factors Author: D. Gries, rev. R. Bittman (7/98), rev. R. Bittman 2005

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
  • Flora of North America Editorial Committee. 2014b. Flora of North America North of Mexico. Vol. 9. Magnoliophyta: Picramniaceae to Rosaceae. Oxford University Press, New York. xxiv + 713 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.

  • 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.

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