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Claytonia serpenticola

T.R. Stoughton

Serpentine Spring Beauty

G3Vulnerable Found in 7 roadless areas NatureServe Explorer →
G3VulnerableGlobal Rank
LowThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.1142492
Element CodePDPOR03140
Record TypeSPECIES
ClassificationSpecies
Classification StatusProvisional
Name CategoryVascular Plant
Endemicendemic to a single nation
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderCaryophyllales
FamilyMontiaceae
GenusClaytonia
Concept Reference
Stoughton, T.R., D.D. Jolles, and R.L. O'Quinn. 2017. The western spring beauties, Claytonia lanceolata (Montiaceae): a review and revised taxonomy for California. Systematic Botany 42(2): 283-300.
Taxonomic Comments
Claytonia serpenticola is described as distinct from the C. lanceolata species complex by Stoughton et al. (2017).
Conservation Status
Rank MethodLegacy Rank calculation - Biotics v1
Review Date2020-02-12
Change Date2020-02-04
Edition Date2020-02-12
Edition AuthorsTreher (2020)
Threat ImpactLow
Range Extent5000-20,000 square km (about 2000-8000 square miles)
Number of Occurrences21 - 80
Rank Reasons
Claytonia serpenticola occurs in northwestern California in the North Coast Ranges up to the Siskiyou Mountains in southern Oregon. It is associated with mafic substrates and occurs in dry, stony areas of mixed conifer forest. There are around 21 known occurrences. Surveys of historic occurrences and potential habitat will provide valuable information that will better inform the conservation status of this species. Trends are unknown. Given that all occurrences are on Forest Service Land at remote locations, implies that threats to this species are low.
Range Extent Comments
Claytonia serpenticola occurs in Klamath-Siskiyou region of northwestern California in the North Coast Ranges up to the Siskiyou Mountains in southern Oregon (Jackson County) (Stoughton et al. 2017). Range extent is calculated around 7,000 to 10,000 sq km based on recent herbarium and photo observations (iNaturalist.org 2020).
Occurrences Comments
There are 21 occurrences in California and occurs on 2 peaks in Oregon. Most occurrences have not been seen within 20 years, but due to their remoteness and unchanged land use, are expected to be extant; more occurrences are expected to be found (Sims and Bittman 2019). There are eleven recent observations of the Serpentine Spring Beauty in iNaturalist (2020).
Threat Impact Comments
All occurrences are on U.S. Forest Service lands and there are no known direct threats according to Sims and Bittman (2017).
Ecology & Habitat

Habitat

Claytonia serpenticola occurs on "xeric, stony slopes (generally north-facing) comprised of mafic substrates (e.g. gabbro, peridotite, serpentinite), sometimes mixed with sedimentary rocks (e.g. shale), and in soils derived from these parent materials. Most often found in openings of mixed-conifer and subalpine forest habitats (Stoughton et al. 2017)."
Terrestrial Habitats
Forest/WoodlandForest - ConiferForest - Mixed
Other Nations (1)
United StatesN3
ProvinceRankNative
CaliforniaS3Yes
OregonSNRYes
Threat Assessments
ThreatScopeSeverityTiming
No known threats———

—

Plant Characteristics
DurationPERENNIAL, SPRING-FLOWERING
Economic Value (Genus)No
Roadless Areas (7)
California (7)
AreaForestAcres
Blue Creek Rare ISix Rivers National Forest12,134
Castle Crags AShasta-Trinity National Forest113
Castle Crags BShasta-Trinity National Forest1,619
Lake EleanorShasta-Trinity National Forest397
Mt. EddyShasta-Trinity National Forest7,232
Mt. LassicSix Rivers National Forest6,643
Orleans Mtn.Klamath National Forest49,090
References (3)
  1. iNaturalist. 2020. Online. Available: http://www.inaturalist.org (accessed 2020).
  2. Sims, A. and R. Bittman. 2019. Rare plant status review: <i>Claytonia serpenticola</i>. Proposed addition to California Rare Plant Rank 4.3, G3 / S3. October 15, 2019.
  3. Stoughton, T.R., D.D. Jolles, and R.L. O'Quinn. 2017. The western spring beauties, <i>Claytonia lanceolata</i> (Montiaceae): a review and revised taxonomy for California. Systematic Botany 42(2): 283-300.