Home/Species/ Shasta Pincushion

Chaenactis suffrutescens

A. Gray

Shasta Pincushion

G3Vulnerable Found in 10 roadless areas NatureServe Explorer →

G3VulnerableGlobal Rank

LowThreat Impact

Identity

Unique IDELEMENT_GLOBAL.2.151855

Element CodePDAST200H0

Record TypeSPECIES

ClassificationSpecies

Classification StatusStandard

Name CategoryVascular Plant

Endemicendemic to a single nation

KingdomPlantae

PhylumAnthophyta

ClassDicotyledoneae

OrderAsterales

FamilyAsteraceae

GenusChaenactis

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

Review Date2015-01-20

Change Date1993-07-06

Edition Date2002-06-24

Edition AuthorsOliver, L., rev. K. Gravuer (2009)

Threat ImpactLow

Range Extent1000-5000 square km (about 400-2000 square miles)

Number of Occurrences6 - 20

Rank Reasons

Chaenactis suffrutescens is known from the southern and eastern Klamath Ranges and the Cascade Range (High Range and Foothills) in Trinity and Siskiyou counties, California. 25 occurrences have been recorded, although 18 of these are considered historical. Occurrences are found on U.S. Forest Service (Shasta-Trinity NF), BLM, and private lands. Threats appear low at this time and possibly include road construction/maintenance, recreation, grazing, development, and non-native plants at some sites.

Range Extent Comments

Known from the southern and eastern Klamath Ranges and the Cascade Range (High Range and Foothills) in Trinity and Siskiyou counties, California (Hickman 1993, Flora of North America Editorical Committee 2006).

Occurrences Comments

25 occurrences are known, although 18 of these are considered historical.

Threat Impact Comments

Threats to this species appear low at this time. Possible threats include road construction/maintenance, recreation, grazing, development, and non-native plants (CNPS 2009).

Ecology & Habitat

Habitat

Dry, open, sandy to rocky sites, including rocky open slopes, gravelly to cobbly river terraces, loose scree and occasionally rocky road cuts. Usually on serpentine or other ultramafic deposits; classified as a strict serpentine endemic (≥ 95% of occurrences on ultramafics) by Safford et al. (2005). Sites are located within lower and upper montane coniferous forest communities. 700 - 2800 m.

Terrestrial Habitats

Forest/WoodlandForest - ConiferBarrensBare rock/talus/scree

Other Nations (1)

United StatesN3

Province	Rank	Native
California	S2	Yes
Oregon	S1	Yes

Plant Characteristics

Economic Value (Genus)No

Roadless Areas (10)

California (10)

Area	Forest	Acres
Bonanza King	Shasta-Trinity National Forest	16,402
Castle Crags A	Shasta-Trinity National Forest	113
Castle Crags B	Shasta-Trinity National Forest	1,619
Cow Creek	Shasta-Trinity National Forest	22,627
Lake Eleanor	Shasta-Trinity National Forest	397
Mt. Shasta A	Shasta-Trinity National Forest	676
Mt. Shasta B	Shasta-Trinity National Forest	2,809
Orleans Mtn.	Klamath National Forest	49,090
Snoozer	Klamath National Forest	23,414
Weaver Bally	Shasta-Trinity National Forest	829

References (6)

Bureau of Land Management (BLM). 2009 last update. BLM California Special Status Plants Guide. U.S. Department of the Interior Bureau of Land Management. Online. Available: http://www.blm.gov/ca/st/en/prog/ssp.html (Accessed 2009)
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).
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.
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.
Safford, H. D., J. H. Viers, and S. P. Harrison. 2005. Serpentine endemism in the California flora: A database of serpentine affinity. Madroño 52(4): 222-257.