Thermopsis macrophylla - Hook. & Arn.
California Golden-banner
Taxonomic Status: Accepted
Related ITIS Name(s): Thermopsis macrophylla Hook. & Arn. (TSN 27001)
Unique Identifier: ELEMENT_GLOBAL.2.150279
Element Code: PDFAB3Z0E0
Informal Taxonomy: Plants, Vascular - Flowering Plants - Pea Family
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Dicotyledoneae Fabales Fabaceae Thermopsis
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Concept Reference
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Concept Reference: Kartesz, J.T. 1999. A synonymized checklist and atlas with biological attributes for the vascular flora of the United States, Canada, and Greenland. First edition. In: Kartesz, J.T., and C.A. Meacham. Synthesis of the North American Flora, Version 1.0. North Carolina Botanical Garden, Chapel Hill, N.C.
Concept Reference Code: B99KAR01HQUS
Name Used in Concept Reference: Thermopsis macrophylla
Taxonomic Comments: As presently treated by Kartesz (1999), Thermopsis macrophylla has no varieties and it is considered a California endemic; various former varieties are treated by Kartesz as other species. The Jepson Manual (Hickman, 1993) includes 4 varieties within a broader T. macrophylla, but states that it is a regionally diverse complex that has been classified variously.
Conservation Status
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NatureServe Status

Global Status: G1
Global Status Last Reviewed: 18May2016
Global Status Last Changed: 24Jun1998
Ranking Methodology Used: Ranked by calculator
Rounded Global Status: G1 - Critically Imperiled
Reasons: Endemic to Santa Barbara County, California and known from fewer than 7 occurrences. Although seven sites are documented, only one is confirmed extant. Apparently disturbance dependent and fire suppression is the primary threat. Historic sites need to be surveyed.
Nation: United States
National Status: N1

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 (S1)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent Comments: California endemic from Santa Barbara County (California Department of Fish and Game, 1997).

Area of Occupancy: 6-25 4-km2 grid cells
Area of Occupancy Comments:  

Number of Occurrences: 1 - 5
Number of Occurrences Comments: Seven occurrences, three of which are extirpated or possibly extirpated. Only one site has been seen in the last 20 years. However, this is a fire follower and fire suppression has been the rule for decades in California. The seed bank may hold many more occurrences than we currently know about.

Number of Occurrences with Good Viability/Integrity: Very few (1-3)

Overall Threat Impact: Very high - medium
Overall Threat Impact Comments: Fire suppression is noted as a threat but the species is ranked "not endangered" by the California Native Plant Society (CNPS 2001). It should be noted that continued fire suppression is a real threat. The seed bank may or may not be very long-lived, but at some point the seed will start to disappear. Additional threats are invasive species, ORVs, and road grading.

Short-term Trend: Decline of 30-50%
Short-term Trend Comments: Three sites are extirpated.

Long-term Trend: Decline of 50-70%
Long-term Trend Comments: The long term, or 200 year, trend is showing large decline, perhaps as much as 75%. We may not know the full extent of this taxon in the Santa Ynez Mountains, but basing this on existing data suggests large decline.

Intrinsic Vulnerability Comments: Since this is a fire follower and fires are generally suppressed, this plant has vulnerability.

Environmental Specificity: Moderate. Generalist or community with some key requirements scarce.
Environmental Specificity Comments: Thermopsis macrophylla occurs on granitic, sandy soils in disturbed areas in chaparral between 425-1400m.

Other NatureServe Conservation Status Information

Distribution
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Global Range: California endemic from Santa Barbara County (California Department of Fish and Game, 1997).

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 Santa Barbara (06083)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
18 Santa Ynez (18060010)+, Santa Barbara Coastal (18060013)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Basic Description: A shrubby, stout perennial herb. To 2 dm tall; stems erect and clustered. Stems and leaves long, tomentose, with curled, spreading hairs. Leaves 3-foliate, with free, leaf-like stipules; stipules ovate-cordate; leaflets obovate-cuneate and 4-7cm long, villous. Inflorescence a spike, 1.5-2.5dm long; corolla 17-19mm long; stamens 10, distinct; pod 6-8cm long, few-seeded, appressed-pubescent, separating into two valves. Blooms April-June.
Duration: PERENNIAL
Terrestrial Habitat(s): Shrubland/chaparral
Habitat Comments: In chaparral. It is found in open areas such as fuel breaks, after burns; on sandstone; 420-2050 m altitude (California Department of Fish and Game, 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: 18May2016
NatureServe Conservation Status Factors Author: K. Maybury (2003); rev. R. Bittman (2005), rev. Bittman and Treher (2016)

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

  • California Department of Fish and Game. 2000. Natural Diversity Database (RareFind 2), Version 2.1.2, January 25, 2000. Downloaded in 2003.

  • California Native Plant Society (CNPS). 2001. Inventory of Rare and Endangered Plants of California (sixth edition). Rare Plant Scientific Advisory Committee, David P. Tibor, Convening Editor. California Native Plant Society. Sacramento, CA. x + 388pp.

  • Kartesz, J.T. 1999. A synonymized checklist and atlas with biological attributes for the vascular flora of the United States, Canada, and Greenland. First edition. In: Kartesz, J.T., and C.A. Meacham. Synthesis of the North American Flora, Version 1.0. North Carolina Botanical Garden, Chapel Hill, N.C.

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