Roadless Areas
Home/Species/ Robust Daisy

Erigeron robustior

(Cronq.) Nesom

Robust Daisy

G3Vulnerable Found in 1 roadless area NatureServe Explorer →
G3VulnerableGlobal Rank
LowThreat Impact
Identity
Unique IDELEMENT_GLOBAL.2.159814
Element CodePDAST3M134
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single state or province
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderAsterales
FamilyAsteraceae
GenusErigeron
Synonyms
Erigeron decumbens ssp. robustiorCronq.Erigeron decumbens var. robustior(Cronq.) Cronq.
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
Nesom (2004) elevates Erigeron decumbens var. robustior to the full species E. robustior, stating that the two taxa are disjunct, as well as "separated by consistent morphological differences... the magnitude of difference between them is consistent with other accepted species of Erigeron, particularly within the 'Erigeron eatonii A. Gray group,' of which they are a part." This is the view he presents in Flora of North America (2006b) as well.
Conservation Status
Rank MethodLegacy Rank calculation - Excel v3.1x
Review Date2014-10-14
Change Date1997-03-14
Edition Date2014-10-14
Edition AuthorsBittman, R.
Threat ImpactLow
Range Extent1000-5000 square km (about 400-2000 square miles)
Number of Occurrences21 - 80
Ecology & Habitat
Other Nations (1)
United StatesN3
ProvinceRankNative
CaliforniaS3Yes
Plant Characteristics
Economic Value (Genus)No
Roadless Areas (1)
California (1)
AreaForestAcres
Pilot CreekSix Rivers National Forest9,192
References (3)
  1. Flora of North America Editorial Committee (FNA). 2006b. Flora of North America north of Mexico. Vol. 20. Magnoliophyta: Asteridae, part 7: Asteraceae, part 2. Oxford Univ. Press, New York. xxii + 666 pp.
  2. 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.
  3. Nesom, G.L. 2004d. Taxonomic reevaluations in North American <i>Erigeron</i> (Asteraceae: Astereae). Sida 21(1):19-39.