Home/Species/ Muir's Tarplant

Carlquistia muirii

(A. Gray) B.G. Baldwin

Muir's Tarplant

G2Imperiled Found in 4 roadless areas NatureServe Explorer →

G2ImperiledGlobal Rank

UnknownThreat Impact

Identity

Unique IDELEMENT_GLOBAL.2.155574

Element CodePDASTDU010

Record TypeSPECIES

ClassificationSpecies

Classification StatusStandard

Name CategoryVascular Plant

Endemicendemic to a single state or province

KingdomPlantae

PhylumAnthophyta

ClassDicotyledoneae

OrderAsterales

FamilyAsteraceae

GenusCarlquistia

Synonyms

Raillardella muiriiGrayRaillardiopsis muirii(Gray) Rydb.

Other Common Names

Muir's raillardiopsis (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 Method Rank calculation - Biotics v2

Review Date2023-05-22

Change Date1985-11-13

Edition Date2023-09-11

Edition AuthorsD. Gries (1998), rev. Eberly (2023)

Threat ImpactUnknown

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

Number of Occurrences6 - 20

Rank Reasons

Endemic to the southern Sierra Nevada in California, Carlquistia muirii is known from twenty-one occurrences in Fresno, Kern, Monterey, and Tulare Counties. Some occurrences are threatened by road maintenance, recreational activities and related maintenance, and timber harvesting. Most occurrences are historical and require a site revisit to better understand how the species is doing.

Range Extent Comments

Carlquistia muirii is endemic to the southern Sierra Nevada in California, USA, where it occurs in Fresno, Kern, Monterey, and Tulare Counties (Baldwin and Kyhos 1990, Skinner 1997).

Occurrences Comments

There are twenty-one occurrences (CNDDB 2023) but eighteen haven't been seen for over 20 years.

Threat Impact Comments

Threats to this species include trails and trail maintenance and foot traffic.

Ecology & Habitat

Habitat

This species grows in chaparral (montane), lower montane coniferous forest, upper montane coniferous forest on crevices of granite ledges and dry sandy soils at elevations of 1,185 to 2,500 m above sea level (CNDDB 2023).

Terrestrial Habitats

Forest/WoodlandForest - ConiferShrubland/chaparralCliff

Other Nations (1)

United StatesN2

Province	Rank	Native
California	S2	Yes

Threat Assessments

Threat	Scope	Severity	Timing
1 - Residential & commercial development	Small (1-10%)	Unknown	High (continuing)
5 - Biological resource use	Small (1-10%)	Unknown	High (continuing)
5.3 - Logging & wood harvesting	Small (1-10%)	Unknown	High (continuing)
5.3.4 - Unintentional effects: large scale (species being assessed is not the target) [harvest]	Small (1-10%)	Unknown	High (continuing)
6 - Human intrusions & disturbance	Large - restricted	Unknown	High (continuing)
6.1 - Recreational activities	Large - restricted	Unknown	High (continuing)
9 - Pollution	Unknown	Unknown	High (continuing)
9.3 - Agricultural & forestry effluents	Unknown	Unknown	High (continuing)
9.3.2 - Soil erosion, sedimentation	Unknown	Unknown	High (continuing)

Plant Characteristics

DurationPERENNIAL

Economic Value (Genus)No

Roadless Areas (4)

California (4)

Area	Forest	Acres
Domeland Add.	Sequoia National Forest	3,046
Kings River	Sierra National Forest	52,999
Oat Mtn.	Sequoia National Forest	12,223
Woodpecker	Sequoia National Forest	11,936

References (5)

Baldwin, B.G., and D.W. Kyhos. 1990. Systematic and biogeographic review of <i>Raillardiopsis (Raillardella) muirii</i> (Asteraceae: Madiinae), with special reference to a disjunct California Coast Range population. Madrono 37(1):43-54.
California Natural Diversity Database (CNDDB). 2023. RareFind Version 5.2.14. California Department of Fish and Game, Sacramento.
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.
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.

Carlquistia muirii

Habitat

—