Griseb.
Identity
Unique IDELEMENT_GLOBAL.2.144353
Element CodePDGEN06040
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
Endemicoccurs (regularly, as a native taxon) in multiple nations
KingdomPlantae
PhylumAnthophyta
ClassDicotyledoneae
OrderGentianales
FamilyGentianaceae
GenusGentiana
Other Common Namesclosed bottle gentian (EN) Closed Bottle Gentian (EN) Gentiane d'Andrews (FR)
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 Date2024-06-17
Change Date2024-06-17
Edition Date2024-06-17
Edition AuthorsN. Ventrella (2024)
Threat ImpactUnknown
Range Extent>2,500,000 square km (greater than 1,000,000 square miles)
Number of Occurrences> 300
Rank ReasonsGentiana andrewsii is a widespread perennial herb occurring on calcareous soils in open woods, swamps, prairies, and savannas of eastern North America from Saskatchewan, east to Quebec, Canada; and Vermont west to North Dakota, south to Colorado, and east to Delaware, United States. There are over 1,000 occurrences of this species, though some of these may be from misidentified records of G. clausa and G. saponaria. Threats are not well documented but include development, road maintenance, invasive species, recreation, deer browse, and woody plant encroachment and shading into open habitat. Little is known about trends, but with a large range extent, large number of occurrences, and no obvious intrinsic vulnerabilities, this species is considered secure.
Range Extent CommentsGentiana andrewsii occurs in eastern North America from Saskatchewan, east to Quebec, Canada and Vermont west to North Dakota, south to Colorado, and east to Delaware, United States (Flora of North America Editorial Committee 2023, Weakley and the Southeastern Flora Team 2024). Range extent was estimated to be just under 4 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). See individual entries for distribution details about the two varieties.
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). However, this may be an over-estimation, given that G. andrewsii has often been confused with G. clausa and G. saponaria in its southern range (Flora of North America Editorial Committee 2023).
Threat Impact CommentsAlthough threats are not widely documented, Gentiana andrewsii is potentially threatened by development, road maintenance, invasive species, recreation, deer browse, woody plant encroachment and shading into open habitat, and other threats in some places (NatureServe 2024). However, they are considered negligible given the broad range and large number of occurrences of the species, and its somewhat flexible and abundant habitat, as well as no obvious intrinsic vulnerabilities.