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Lomatium lithosolamans

J.F. Sm. & Feist

Hoover's Tauschia

G2Imperiled (G2G3) Found in 2 roadless areas NatureServe Explorer →
G2ImperiledGlobal Rank
Identity
Unique IDELEMENT_GLOBAL.2.129388
Element CodePDAPI27040
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single state or province
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderApiales
FamilyApiaceae
GenusLomatium
Synonyms
Tauschia hooveriMathias & Constance
Other Common Names
Hoover's umbrellawort (EN) Hoover's Umbrella-wort (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.
Taxonomic Comments
Feist et al. (2017) found that all species of Tauschia north of Mexico will need to be transferred to other genera. The combination for Tauschia hooveri in Lomatium is already occupied necessitating a replacement name, Lomatium lithosolamans (Feist et al. 2017).
Conservation Status
Rank MethodExpertise without calculation
Review Date2018-06-28
Change Date2018-06-28
Edition Date1992-02-10
Edition AuthorsGamon, John G., rev. Gamon/Maybury (1996)
Range Extent250-20,000 square km (about 100-8000 square miles)
Number of Occurrences21 - 80
Rank Reasons
A local endemic of Yakima and Kittitas counties in central Washington. Restricted to microsites with basalt lithosols. There are currently 28 known occurrences. Military training activities may pose a threat and grazing may constitute a minor threat, although cattle generally avoid the lithosols, which are hard to walk on and have little forage.
Range Extent Comments
The range extends from Toppenish Ridge in southcentral Yakima county, northward to the southeastern foothills of the Wenatchee Mtns. in east-central Kittitas County, Washington, encompassing an area of ca. 65 miles x 15 miles.
Occurrences Comments
There are currently 28 known extant EOs. There are also 7 sightings within the Yakima Indian Reservation which have not been visited recently. The 17 extant sites could be characterized as occurring within 4 phsyiotopographic areas.
Threat Impact Comments
Conversion of the habitat, grazing, off-road vehicle use, weed invasion, etc. are all threats.
Ecology & Habitat

Habitat

Basalt lithosols within shrub-steppe habitats. Total vegetative cover is low: 10-50% bare rocks and gravel. Sites are well-drained and flat.
Terrestrial Habitats
Shrubland/chaparral
Other Nations (1)
United StatesN2
ProvinceRankNative
WashingtonS2Yes
Plant Characteristics
DurationPERENNIAL
Economic Value (Genus)Yes
Roadless Areas (2)
Washington (2)
AreaForestAcres
Blue SlideWenatchee National Forest17,505
ManastashWenatchee National Forest11,155
References (7)
  1. Abrams, L. 1951. Illustrated flora of the Pacific states: Washington, Oregon, and California. Vol. 3. Geraniaceae to Scrophulariaceae. Stanford Univ. Press, Stanford, California. 866 pp.
  2. Feist, M., J.F. Smith, D.H. Mansfield, M. Darrach, R.P. McNeill, S.R. Downie, G.M. Plunkett, and B.L. Wilson. 2017. New combinations in <i>Lomatium </i>(Apiaceae, subfamily apioideae). Phytotaxa 316(1): 95-98
  3. Flora of North America Editorial Committee (FNA). 2024. Flora of North America north of Mexico. Vol. 13. Magnoliophyta: Geraniaceae to Apiaceae. Oxford Univ. Press, New York. xxiv + 566 pp.
  4. Hitchcock, C.L., and A. Cronquist. 1973. Flora of the Pacific Northwest: An Illustrated Manual. University of Washington Press, Seattle, Washington. 730 pp.
  5. 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.
  6. Washington Natural Heritage Program. 1981. An illustrated guide to the endangered, threatened and sensitive vascular plants of Washington. Washington Natural Heritage Program, Olympia. 328 pp.
  7. Washington Natural Heritage Program. 1994. Endangered, threatened and sensitive vascular plants of Washington. Dept. of Natural Resources, Olympia, Washington. 52 pp.