(L.) L.
Identity
Unique IDELEMENT_GLOBAL.2.147677
Element CodePDMAG02090
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
IUCNLeast concern
Endemicendemic to a single nation
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderMagnoliales
FamilyMagnoliaceae
GenusMagnolia
Other Common NamesUmbrella-tree (EN) umbrella-tree (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 Date2024-11-20
Change Date1991-05-07
Edition Date2024-11-20
Edition AuthorsBroaddus, Lynn (1991), Soteropoulos (2024)
Threat ImpactUnknown
Range Extent200,000-2,500,000 square km (about 80,000-1,000,000 square miles)
Number of Occurrences> 300
Rank ReasonsMagnolia tripetala is a tree in forests and ravines endemic to the southeastern United States from southern Pennsylvania, Ohio, and Indiana south to South Carolina west to the Florida panhandle and Mississippi, disjunct in the Interior Highlands of Arkansas and Oklahoma. There are an estimated 1,000 occurrences which potentially face threats from development, rights-of-way maintenance and pipeline development, silviculture, recreational activities, wildfires, and invasive species. Little is known about trends, but with a large range extent and large number of occurrences, abundant habitat, and no obvious intrinsic vulnerabilities, this species is considered secure.
Range Extent CommentsMagnolia tripetala is endemic to the southeastern United States, centered in the Southern Appalachians though not typically found at higher elevations, ranging from south-central and southwestern Pennsylvania, southern Ohio, and southern Indiana south to South Carolina west to the Florida panhandle and Mississippi, disjunct in the Ouachita Mountains and Ozark Highlands in Arkansas and Oklahoma (Weakley and the Southeastern Flora Team 2024). It is naturalizing from plantings in Delaware, New Jersey, New York, and New England. Range extent was estimated to be approximately 1.25 million square kilometers using herbarium specimens, photo-based observations, and NatureServe Network occurrence data documented 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 1,000 occurrences rangewide (GBIF 2024, iNaturalist 2024, NatureServe 2024, SEINet 2024). This species is occasionally cultivated (FNA 1997), and iNatualist observations (>6,000) were not evaluated for evidence of cultivation, though observations outside the native range were excluded (iNaturalist 2024).
Threat Impact CommentsAlthough threats are not widely documented, this species is potentially threatened by development, silviculture, rights-of-way maintenance and pipeline development, recreational activities (especially development of multi-use trails) wildfires, invasive species, and other threats in some places (NatureServe 2024). However, their overall impact is likely negligible given the species' broad range, large number of occurrences, and no obvious intrinsic vulnerabilities.