(uhl. ex Willd.) Nesom
Identity
Unique IDELEMENT_GLOBAL.2.137173
Element CodePDASTE8170
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicoccurs (regularly, as a native taxon) in multiple nations
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderAsterales
FamilyAsteraceae
GenusSymphyotrichum
SynonymsAster prenanthoidesMuhl. ex Willd.
Other Common NamesAster fausse-prenanthe (FR) Crooked-stem American-aster (EN) crookedstem aster (EN)
Concept ReferenceKartesz, 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.
Conservation Status
Rank Method Rank calculation - Biotics v2
Review Date2024-08-21
Change Date2024-08-21
Edition Date2024-08-21
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 ReasonsSymphyotrichum prenanthoides is a perennial forb occurring in damp, marshy areas, wooded regions, grassy fields, and roadsides of eastern North America, from Ontario, Canada, and Massachusetts and New York south to Georgia, west to Iowa, and north to Minnesota in the United States. There are over 650 occurrences of this species, which are threatened by development, rights-of-way maintenance, invasive species, and succession. Although it is considered rare in portions of its range and little is known about trends, with a large range extent, a high number of occurrences, abundant habitat, broad habitat preferences, and no obvious intrinsic vulnerabilities, Symphyotrichum prenanthoides is considered secure.
Range Extent CommentsSymphyotrichum prenanthoides occurs in eastern North America from Ontario, Canada, and Massachusetts and New York south to Georgia, west to Iowa, and north to Minnesota in the United States (FNA 2006, Weakley and the Southeastern Flora Team 2024). Range extent was estimated to be 1.4 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 650 occurrences rangewide (GBIF 2024, iNaturalist 2024, NatureServe 2024, SEINet 2024).
Threat Impact CommentsSymphyotrichum prenanthoides is threatened by habitat loss due to conversion of land for agriculture, invasive species, recreational activities, succession, development, logging, rights-of-way maintenance, and other threats in some places (NatureServe 2024). However, their overall impact is likely negligible given the species' broad range, large number of occurrences, tolerance of light disturbance, and affinity for typically abundant habitats, as well as no obvious intrinsic vulnerabilities.