Roadless Areas
Home/Species/ Romona Horkelia

Horkelia truncata

Rydb.

Romona Horkelia

G3Vulnerable Found in 1 roadless area NatureServe Explorer →
G3VulnerableGlobal Rank
Identity
Unique IDELEMENT_GLOBAL.2.154628
Element CodePDROS0W0G0
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicoccurs (regularly, as a native taxon) in multiple nations
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderRosales
FamilyRosaceae
GenusHorkelia
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 Date1999-06-10
Change Date1989-05-01
Edition Date1999-06-10
Edition AuthorsGries, D.
Rank Reasons
Horkelia truncata is known from eight occurrences in San Diego County, California, and also occurs in Baja California, Mexico. In California, the species is known from perhaps as few as 500 individuals and is threatened by road maintenance.
Range Extent Comments
Known only from San Diego County, California, and Baja California, Mexico (California Department of Fish and Game 1997).
Occurrences Comments
Known from eight occurrences in California (California Department of Fish and Game 1997).
Threat Impact Comments
Threatened by road maintenance (California Department of Fish and Game 1997).
Ecology & Habitat

Habitat

In California, found in mixed chaparral, vernal streams, and disturbed areas near roads; clay soil. 400-1300 m (California Department of Fish and Game 1997).
Terrestrial Habitats
Shrubland/chaparral
Other Nations (1)
United StatesN2
ProvinceRankNative
CaliforniaS3Yes
Plant Characteristics
Economic Value (Genus)No
Roadless Areas (1)
California (1)
AreaForestAcres
Pine CreekCleveland National Forest503
References (4)
  1. California Department of Fish and Game. 1997. RareFind 2 personal computer program. Information dated March 1999. Sacramento, California.
  2. Flora of North America Editorial Committee (FNA). 2014b. Flora of North America north of Mexico. Vol. 9. Magnoliophyta: Picramniaceae to Rosaceae. Oxford University Press, New York. xxiv + 713 pp.
  3. 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.
  4. 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.