Home/Species/ Tracy's Eriastrum

Eriastrum tracyi

Mason

Tracy's Eriastrum

G3Vulnerable (G3Q) Found in 7 roadless areas NatureServe Explorer →

G3VulnerableGlobal Rank

Very high - highThreat Impact

Identity

Unique IDELEMENT_GLOBAL.2.149273

Element CodePDPLM030C0

Record TypeSPECIES

ClassificationSpecies

Classification StatusStandard

Name CategoryVascular Plant

Endemicendemic to a single state or province

KingdomPlantae

PhylumAnthophyta

ClassDicotyledoneae

OrderSolanales

FamilyPolemoniaceae

GenusEriastrum

Concept Reference

Baldwin, B. G., D. H. Goldman, D. J. Keil, R. Patterson, T. J. Rosatti, and D. H. Wilken, eds. 2012. The Jepson manual: vascular plants of California. 2nd edition. University of California Press, Berkeley, CA. 1568 pp.

Taxonomic Comments

Recognized as distinct by Kartesz in 1994 checklist, but he includes it in E. brangegeeae in his 1999 synthesis. The 2nd edition of The Jepson Manual (Baldwin et al. 2012) treats these taxa as distinct. The California Native Plant Society Rare Plant Inventory website notes suggest that some populations may belong to other species (Aug. 2013).

Conservation Status

Rank Method Rank calculation - Biotics v2

Review Date2022-05-25

Change Date2013-08-19

Edition Date2022-05-25

Edition AuthorsD. Gries (1997), rev. L. Morse (1998), rev. Treher (2022)

Threat ImpactVery high - high

Range Extent20,000-200,000 square km (about 8000-80,000 square miles)

Number of Occurrences81 - 300

Rank Reasons

Eriastrum tracyi is an annual herb that is endemic to California, U.S.A. Threats include habitat loss due to conversion of lands for agriculture, development and road expansion projects and direct mortality due to off-road vehicle use and trampling by cattle and hikers. Further taxonomic research may be needed to clarify relationships in this species complex.

Range Extent Comments

Eriastrum tracyi is endemic to California, U.S.A. This species is similar to Eriastrum brandegeeae, and can be difficult to differentiate due to variability in characters.

Threat Impact Comments

Threats include habitat loss due to conversion of lands for agriculture, development and road expansion projects and direct mortality due to off-road vehicle use and grazing and trampling by cattle, and trampling by hikers (CNDDB 2022, Groot et al. 2015).

Ecology & Habitat

Habitat

This species grows in on gravelly shale or alluvium (clay) with little to no canopy within valley and foothill grasslands, cismontane woodlands, and chaparral (CNDDB 2022, Groots et al. 2015).

Terrestrial Habitats

Forest/WoodlandWoodland - MixedShrubland/chaparralGrassland/herbaceous

Other Nations (1)

United StatesN3

Province	Rank	Native
California	S3	Yes

Threat Assessments

Threat	Scope	Severity	Timing
1 - Residential & commercial development	Large (31-70%)	Extreme - serious	High (continuing)
2 - Agriculture & aquaculture	Large - restricted	Moderate - slight	High (continuing)
2.3 - Livestock farming & ranching	Large - restricted	Moderate - slight	High (continuing)
2.3.4 - Scale unknown/unrecorded	Large - restricted	Moderate - slight	High (continuing)
4 - Transportation & service corridors	Large - restricted	Serious - slight	High (continuing)
4.1 - Roads & railroads	Large - restricted	Serious - slight	High (continuing)
6 - Human intrusions & disturbance	Small (1-10%)	Unknown	High (continuing)
6.1 - Recreational activities	Small (1-10%)	Unknown	High (continuing)

Plant Characteristics

DurationANNUAL

Economic Value (Genus)No

Roadless Areas (7)

California (7)

Area	Forest	Acres
Channell	Sequoia National Forest	45,429
Chico	Sequoia National Forest	39,836
Greenhorn Creek	Sequoia National Forest	28,226
Rincon	Sequoia National Forest	54,610
Snow Mountain	Mendocino National Forest	14,457
Timbered Crater	Lassen National Forest	4,096
Woolstaff	Sequoia National Forest	41,445

References (7)

Baldwin, B. G., D. H. Goldman, D. J. Keil, R. Patterson, T. J. Rosatti, and D. H. Wilken, eds. 2012. The Jepson manual: vascular plants of California. 2nd edition. University of California Press, Berkeley, CA. 1568 pp.
California Natural Diversity Database (CNDDB). 2022. RareFind Version 5.2.14. California Department of Fish and Game, Sacramento.
Groot, S.D., D. Gowen, and R.W. Patterson. 2015. <i>Eriastrum</i>, in Jepson Flora Project (eds.), Jepson eFlora, Revision 3. Online. Available: https://ucjeps.berkeley.edu/eflora/eflora_display.php?tid=24598 (accessed 25 May 2022).
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., and C. Meacham. 1998c. Unpublished review draft of Floristic Synthesis, 17 Aug 1998. North Carolina Botanical Garden, Chapel Hill, NC.
NatureServe. Unpublished. Concept reference for taxa for which no reference which describes the circumscription has been recorded; to be used as a placeholder until such a citation is identified.
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.

Eriastrum tracyi

Habitat

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