Pentachaeta aurea - Nutt.
Golden Leastdaisy
Synonym(s): Chaetopappa aurea (Nutt.) Keck
Taxonomic Status: Accepted
Related ITIS Name(s): Pentachaeta aurea Nutt. (TSN 504230)
Unique Identifier: ELEMENT_GLOBAL.2.127914
Element Code: PDAST6X020
Informal Taxonomy: Plants, Vascular - Flowering Plants - Aster Family
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Dicotyledoneae Asterales Asteraceae Pentachaeta
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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: Pentachaeta aurea
Conservation Status
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NatureServe Status

Global Status: G4
Global Status Last Reviewed: 14May2012
Global Status Last Changed: 14May2012
Rounded Global Status: G4 - Apparently Secure
Reasons: Pentachaeta aurea is known from southwestern California and northwestern Baja California, where it occurs from the coast to lower elevations of the Transverse and Peninsular Ranges. Occurrences of this species have not been mapped; approximately 225 distinct herbarium specimens are known to have been collected in California to date (about 53 of these collected after 1989) and at least 8, and probably more, specimens have been collected in Baja California. This species has likely been reduced somewhat from its historical abundance, particularly along the southern California coast. Non-native plants are the most frequent rangewide threat; other threats include development, habitat alteration, and vehicles.
Nation: United States
National Status: NNR

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 (SNR)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent Comments: Southwestern California and northwestern Baja California; occurs from the coast to lower elevations of the Transverse and Peninsular Ranges, including the San Gabriel, San Bernardino, and San Jacinto Mountains (Hickman 1993, Keil 2007). In California, occurs from southeastern Los Angeles County and southwestern San Bernardino County south through Orange, western Riverside, and San Diego Counties (Keil 2007). In Baja California, it occurs on the northwest peninsula (Wiggins 1980).

Number of Occurrences:  
Number of Occurrences Comments: Occurrences of this species have not been mapped. Approximately 225 distinct herbarium specimens are present in the Consortium of California Herbaria database (2009), about 53 of which were collected after 1989. Number of collections from Baja California unknown; 8 specimens retrieved through GBIF database (2009), but more may exist.

Overall Threat Impact Comments: On the whole, this species is considered "fairly endangered" in California, with non-native plants being the most prominent rangewide threat (CNPS 2009). P. aurea ssp. allenii (restricted to southwestern Orange County) (Keil 2007) is considered "seriously threatened", with threats including development, habitat alteration, and vehicles (CNPS 2009).

Long-term Trend:  
Long-term Trend Comments: Once a common plant on the mesas around the City of San Diego, this species now has a more limited distribution in San Diego County (Reiser 2001). Trends in other parts of the range are unknown, but declines from historical levels are likely, especially along the coast.

Other NatureServe Conservation Status Information

Distribution
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Global Range: Southwestern California and northwestern Baja California; occurs from the coast to lower elevations of the Transverse and Peninsular Ranges, including the San Gabriel, San Bernardino, and San Jacinto Mountains (Hickman 1993, Keil 2007). In California, occurs from southeastern Los Angeles County and southwestern San Bernardino County south through Orange, western Riverside, and San Diego Counties (Keil 2007). In Baja California, it occurs on the northwest peninsula (Wiggins 1980).

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 Orange (06059)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
18 Santa Ana (18070203)+, Newport Bay (18070204)+, Aliso-San Onofre (18070301)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Basic Description: Annual herb 5-36 cm tall with flexible, branched stems and linear leaves. Flower heads are solitary at the end of the stem. Ray florets (the "petals" of the complex flower head) number 14-52 and are yellow to brownish orange, rarely white. Disc florets (forming the "center" of the complex flower head) numer 30-90 and are yellow.Flowering March-July.
Palustrine Habitat(s): Riparian
Terrestrial Habitat(s): Cliff, Forest - Conifer, Forest/Woodland, Grassland/herbaceous, Shrubland/chaparral, Woodland - Mixed
Habitat Comments: Grassy or shrubby areas including hillsides, bluffs, and coastal plains; within coastal scrub, chaparral, cismontane woodland, lower montane coniferous forest, riparian woodland, and valley and foothill grassland communities. 30-2000 m.
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: 12May2009
NatureServe Conservation Status Factors Author: Gravuer, K.

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
  • California Native Plant Society (CNPS). 2009. Inventory of Rare and Endangered Plants. California Native Plant Society. Sacramento, CA. Online. Available: http://www.cnps.org/inventory (accessed 2009).

  • Consortium of California Herbaria. 2009. Online database of vascular plant specimens in California herbaria. Online. Available: http://ucjeps.berkeley.edu/consortium/ (accessed 2009).

  • Flora of North America Editorial Committee. 2006b. Flora of North America North of Mexico. Vol. 20. Magnoliophyta: Asteridae, part 7: Asteraceae, part 2. Oxford Univ. Press, New York. xxii + 666 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.

  • 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.

  • Keil, D. J. 2007. Pentachaeta aurea ssp. allenii (Asteraceae), a new subspecies from Orange County, California. Madroņo 54(4): 343-344.

  • Munz, P.A., with D.D. Keck. 1959. A California flora. Univ. California Press, Berkeley. 1681 pp.

  • Reiser, C. 1994. Rare plants of San Diego County. http://sandiego.sierraclub.org/rareplants/. Site updated October 6, 2001 by E. Kanner and B. Buffett. Site accessed 2003.

  • Wiggins, I.L. 1980. Flora of Baja California. Stanford Univ. Press, Stanford, California. 1025 pp.

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