L.
Identity
Unique IDELEMENT_GLOBAL.2.131085
Element CodePDAST3P0U0
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicendemic to a single nation
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderAsterales
FamilyAsteraceae
GenusEupatorium
Other Common Nameshyssopleaf thoroughwort (EN)
Concept ReferenceKartesz, 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 Date2024-06-13
Change Date1984-04-24
Edition Date2024-06-13
Edition AuthorsN. Ventrella (2024)
Threat ImpactUnknown
Range Extent200,000-2,500,000 square km (about 80,000-1,000,000 square miles)
Number of Occurrences> 300
Rank ReasonsEupatorium hyssopifolium occurs in the eastern United States, from New York and Massachusetts south to Florida and west to Texas. It is estimated that there are well over 1,000 occurrences rangewide. It occurs in wet sandy soils in woodlands and oak savannas, roadbanks, pastures, fields, disturbed areas, and along forest edges, where threats include woody plant encroachment and shading of open habitats due to the absence of fire and mowing and maintenance activities in rights-of-ways. However, these threats are considered negligible given the species' broad range, preference for disturbance, and large number of occurrences.
Range Extent CommentsEupatorium hyssopifolium occurs in the eastern United States, from New York and Massachusetts south to Florida and west to Texas (FNA 2006). Range extent was estimated to be 1.9 million square kilometers, using herbarium specimens, photo-based observations, and NatureServe Network occurrence data collected between 1993 and 2024 (GBIF 2024, iNaturalist 2024, NatureServe 2024, SEINet 2024).
Occurrences CommentsBy applying a 1 km separation distance to herbarium specimens, photo-based observations, and NatureServe Network occurrence data documented between 1993 and 2024, it is estimated that there are over 1,000 occurrences rangewide (GBIF 2024, iNaturalist 2024, NatureServe 2024, SEINet 2024).
Threat Impact CommentsThreats to Eupatorium hyssopifolium are not well documented, but include woody plant encroachment and closure of canopy gaps due to the absence of fire, and mowing and maintenance activities in rights-of-ways (NatureServe 2024). However, their overall impact is likely negligible given species' broad range, large number of occurrences, tolerance of disturbance, and affinity for typically abundant habitats, as well as no obvious intrinsic vulnerabilities.