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Diplacus congdonii

(B.L. Rob.) G.L. Nesom

Southern Bog Clubmoss

G4Apparently Secure Found in 2 roadless areas NatureServe Explorer →
G4Apparently SecureGlobal Rank
UnknownThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.139906
Element CodePDSCR1B0U0
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single nation
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderLamiales
FamilyPhrymaceae
GenusDiplacus
Synonyms
Mimulus congdoniiB.L. Robins.
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
The Flora of North America (vol. 17 2019) transfers Mimulus congdonii to Diplacus congdonii; these represent the same concept for the element.
Conservation Status
Rank Method Rank calculation - Biotics v2
Review Date2024-06-04
Change Date2024-06-04
Edition Date2024-06-04
Edition AuthorsSoteropoulos (2024)
Threat ImpactUnknown
Range Extent20,000-200,000 square km (about 8000-80,000 square miles)
Number of Occurrences81 - 300
Rank Reasons
Diplacus congdonii is a wide-ranging annual herb in mountain ranges along the coast and the Sierra Nevada Foothills in southern Oregon and California in the western United States. Little is known about threats or trends, but with a large range extent and large number of occurrences, this species is considered secure.
Range Extent Comments
Diplacus congdonii occurs in the western United States in mountain ranges along the coast in southern Oregon and in California and the Sierra Nevada Foothills. Range extent was estimated to be almost 190,000 square kilometers using herbarium specimens, photo-based observations, and NatureServe Network occurrence data documented between 1983 and 2024 (GBIF 2024, iNaturalist 2024, NatureServe 2024, SEINet 2024).
Occurrences Comments
By applying a 1 km separation distance to herbarium specimens, photo-based observations, and NatureServe Network occurrence data documented between 1983 and 2024, it is estimated that there are almost 100 occurrences rangewide (GBIF 2024, iNaturalist 2024, NatureServe 2024, SEINet 2024).
Threat Impact Comments
Although threats are not widely documented, this species is potentially threatened by development, invasive species, and other threats in some places. However, their overall impact is likely negligible given the species' broad range, large number of occurrences, tolerance of light disturbance, and no obvious intrinsic vulnerabilities.
Ecology & Habitat

Habitat

Diplacus congdonii grows in "serpentine soils, periphery of granite outcrops, disturbed hillsides, soil from decomposed granite, near water runoff areas, away from seeps or other areas with prolonged surface moisture" (FNA 2019).
Terrestrial Habitats
Forest/WoodlandGrassland/herbaceous
Palustrine Habitats
Riparian
Other Nations (1)
United StatesN4
ProvinceRankNative
OregonS1Yes
CaliforniaSNRYes
Threat Assessments
ThreatScopeSeverityTiming
Unknown/undetermined———

—

Plant Characteristics
DurationANNUAL
Economic Value (Genus)No
Roadless Areas (2)
California (2)
AreaForestAcres
Black Mtn.Sequoia National Forest15,102
MosesSequoia National Forest22,077
References (7)
  1. 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.
  2. Global Biodiversity Information Facility (GBIF). 2024. Global Biodiversity Information Facility (GBIF) data portal. Online. Available: https://www.gbif.org/ (accessed 2024).
  3. iNaturalist. 2024. Online. Available: https://www.inaturalist.org (accessed 2024).
  4. 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.
  5. Munz, P.A., with D.D. Keck. 1959. A California flora. Univ. California Press, Berkeley. 1681 pp.
  6. NatureServe. 2024. NatureServe Network Biodiversity Location Data. NatureServe, Arlington, Virginia.
  7. Southwest Environmental Information Network (SEINet). 2024. Collections Databases. Online. Available: https://swbiodiversity.org/seinet/collections/index.php (accessed 2024).