Monolopia congdonii
(A. Gray) B.G Baldwin
San Joaquin Woollythread
G2ImperiledGlobal Rank
Very highThreat Impact
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Mike Butler, CC BY 4.0
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Melanie J. Davis, CC BY 4.0
Arvel Hernandez, CC BY 4.0
Ken-ichi Ueda, CC BY 4.0
Identity
Unique IDELEMENT_GLOBAL.2.153488
Element CodePDASTA8010
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single state or province
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderAsterales
FamilyAsteraceae
GenusMonolopia
Synonyms
Eatonella congdoniiGrayLembertia congdonii(Gray) Greene
Other Common Names
San Joaquin woollythread (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.
Conservation Status
Rank MethodLegacy Rank calculation - Excel v3.1x
Review Date2016-04-12
Change Date2016-04-12
Edition Date2016-04-12
Edition AuthorsD. Gries, rev. R. Bittman (1998, 2016), rev. Treher (2018)
Threat ImpactVery high
Range Extent5000-20,000 square km (about 2000-8000 square miles)
Number of Occurrences21 - 80
Rank Reasons
Endemic to California, Monolopia congdonii is known from about 77 occurrences in six counties . However, a large number are historic and need to be surveyed for up to date information. Threats to this taxon are agricultural conversion, energy development, urbanization, grazing, trampling, vehicles, gravel and sand extraction, and oil and gas development. The species has declined as evidenced by the 23 extirpated occurrences.
Range Extent Comments
Monolopia congdonii is endemic to California, USA, in Fresno, King, Kern, Santa Barbara, San Benito, and San Luis Obispo Counties (extirpated in Tulare County) (Skinner 1997).
Occurrences Comments
This species is known from approximately 100 occurrences but about 63 are historical (last surveyed over 20 years ago).
Threat Impact Comments
Agricultural conversion, energy development, urbanization, grazing, trampling, and vehicles (Skinner, 1997). Also threatened by gravel and sand extraction, and oil and gas development (FWS, 1990).
Ecology & Habitat
Habitat
Chenopod scrub, valley and foothill grassland; sandy soils (Skinner, 1997). Grassland, sandy soils; Elevation: 90-700 m (Jepson FloraProject 2017).
Terrestrial Habitats
Grassland/herbaceous
Other Nations (1)
United StatesN2
| Province | Rank | Native |
|---|---|---|
| California | S2 | Yes |
Threat Assessments
| Threat | Scope | Severity | Timing |
|---|---|---|---|
| 1 - Residential & commercial development | Large - restricted | Moderate or 11-30% pop. decline | High - moderate |
| 1.1 - Housing & urban areas | Large - restricted | Moderate or 11-30% pop. decline | High - moderate |
| 2 - Agriculture & aquaculture | Large - restricted | Moderate or 11-30% pop. decline | High - moderate |
| 2.1 - Annual & perennial non-timber crops | Large - restricted | Moderate or 11-30% pop. decline | High - moderate |
| 2.3 - Livestock farming & ranching | Large - restricted | Moderate or 11-30% pop. decline | High - moderate |
| 3 - Energy production & mining | Large - restricted | Moderate or 11-30% pop. decline | High - moderate |
| 3.1 - Oil & gas drilling | Large - restricted | Moderate or 11-30% pop. decline | High - moderate |
| 3.2 - Mining & quarrying | Large - restricted | Moderate or 11-30% pop. decline | High - moderate |
| 6 - Human intrusions & disturbance | Large - restricted | Moderate or 11-30% pop. decline | High (continuing) |
| 6.1 - Recreational activities | Large - restricted | Moderate or 11-30% pop. decline | High (continuing) |
Plant Characteristics
Economic Value (Genus)No
Roadless Areas (3)
California (3)
| Area | Forest | Acres |
|---|---|---|
| Cuyama | Los Padres National Forest | 19,631 |
| Fox Mountain | Los Padres National Forest | 52,072 |
| Lpoor Canyon | Los Padres National Forest | 13,762 |
References (7)
- Bittman, R. 1998. Lead Botanist, California Natural Diversity Database. Unpublished notes on fifty rare plants of California for purposes of updating Element Global Ranking (EGR) forms. California Natural Heritage Division, Dep. of Fish & Game, Sacramento, California, U.S.A.
- Flora of North America Editorial Committee (FNA). 2006c. Flora of North America north of Mexico. Vol. 21. Magnoliophyta: Asteridae, part 8: Asteraceae, part 3. Oxford Univ. Press, New York. xxii + 616 pp.
- Hickman, J. C., ed. 1993. The Jepson manual: Higher plants of California. University of California Press, Berkeley, CA. 1400 pp.
- Jepson Flora Project (eds.) 2015. Jepson Online Interchange for California Floristics. Accessed online: http://ucjeps.berkeley.edu/interchange/
- 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.
- U.S. Fish and Wildlife Service (USFWS). 1990. Determination of Endangered or Threatened Status for Five Plants from the Southern San Joaquin Valley. Federal Register 55(139): 29361-29370.