Roadless Areas
Home/Species/ Yuba Pass Willowherb

Epilobium howellii

P. Hoch

Yuba Pass Willowherb

G4Apparently Secure Found in 1 roadless area NatureServe Explorer →
G4Apparently SecureGlobal Rank
LowThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.136856
Element CodePDONA06180
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single state or province
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderMyrtales
FamilyOnagraceae
GenusEpilobium
Other Common Names
Yuba Pass willowherb (EN)
Concept Reference
Kartesz, J.T. 1999. A synonymized checklist and atlas with biological attributes for the vascular flora of the United States, Canada, and Greenland. First edition. In: Kartesz, J.T., and C.A. Meacham. Synthesis of the North American Flora, Version 1.0. North Carolina Botanical Garden, Chapel Hill, N.C.
Taxonomic Comments
Epilobium howellii is accepted by Kartesz (1999), but had not been treated in Kartesz (1994) as either a recognized taxon or in synonymy. It is also recognized by Hickman (1993) as a distinct species.
Conservation Status
Review Date2015-02-09
Change Date2009-07-30
Edition Date1999-08-03
Edition AuthorsMartinez, M., rev. R. Bittman 2006, rev. R. Bittman and K. Gravuer (2009)
Threat ImpactLow
Number of Occurrences81 - 300
Rank Reasons
Endemic to the northern and central High Sierra Nevada of California, this species is known from approximately 98 occurrences, over half of which are believed to have excellent or good viability. Millions of plants are known. Known threats are few.
Range Extent Comments
Endemic to California in the northern and central High Sierra Nevada; Fresno, Sierra, Mono, Nevada and Madera counties.
Occurrences Comments
Approximately 98 occurrences are currently known (R. Bittman, pers. comm. 2009).
Threat Impact Comments
No recorded threats for occurrences of this species (California Department of Fish and Game, 1997).
Ecology & Habitat

Habitat

In meadows and subalpine coniferous forest. It grows in wet areas and mossy seeps; 1970 - 2700 m altitude (California Department of Fish and Game, 1997).
Terrestrial Habitats
Forest/WoodlandForest - ConiferGrassland/herbaceous
Other Nations (1)
United StatesN4
ProvinceRankNative
CaliforniaS4Yes
Plant Characteristics
Economic Value (Genus)No
Roadless Areas (1)
California (1)
AreaForestAcres
San JoaquinSierra National Forest22,474
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). 2021. Flora of North America north of Mexico. Vol. 10. Magnoliophyta: Proteaceae to Elaeagnaceae. Oxford Univ. Press, New York. xxiv + 456 pp.
  3. Hickman, J. C., ed. 1993. The Jepson manual: Higher plants of California. University of California Press, Berkeley, CA. 1400 pp.
  4. Kartesz, J.T. 1999. A synonymized checklist and atlas with biological attributes for the vascular flora of the United States, Canada, and Greenland. First edition. In: Kartesz, J.T., and C.A. Meacham. Synthesis of the North American Flora, Version 1.0. North Carolina Botanical Garden, Chapel Hill, N.C.