(Pursh) Lindl.
Identity
Unique IDELEMENT_GLOBAL.2.156473
Element CodePMORC1Y0K0
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
CITESAppendix II
Endemicoccurs (regularly, as a native taxon) in multiple nations
KingdomPlantae
PhylumAnthophyta
ClassMonocotyledoneae
OrderOrchidales
FamilyOrchidaceae
GenusPlatanthera
SynonymsHabenaria orbiculata(Pursh) Torr.
Other Common NamesDessert-plate Orchid (EN) lesser roundleaf orchid (EN) Platanthère à feuilles orbiculaires (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.
Taxonomic CommentsKartesz (1999) and FNA (vol. 26, 2002) elevate Platanthera orbiculata var. macrophylla (= P. macrophylla) to full species, therefore according to FNA, Kartesz's (1994) P. orbiculata var. orbiculata is equivalent to P. orbiculata.
Conservation Status
Rank Method Rank calculation - Biotics v2
Review Date2023-07-17
Change Date2002-11-26
Edition Date2023-07-17
Edition AuthorsFlorence Caplow, Washington Natural heritage Program (2002), rev. Eberly (2023)
Threat ImpactUnknown
Range Extent>2,500,000 square km (greater than 1,000,000 square miles)
Number of Occurrences> 300
Rank ReasonsPlatanthera orbiculata is a wide ranging perennial herb in North America and Canada. It is common in several states and provinces. It is, however, rare throughout a large portion of its range, particularly near its southern limits.
Range Extent CommentsThe taxon occurs throughout Canada, south along the Appalachians to South Carolina and Tennessee in the east and south to Washington (and formerly to Oregon) and to Wyoming in the west.
Threat Impact CommentsIn the southern Appalachians, at the southeastern limit of its range, considered to be somewhat threatened by land-use conversion, habitat fragmentation, and to a lesser extent by forest-management practices (Southern Appalachian Species Viability Project, 2002), but pattern of threats not known for primary (Canadian) portion of range, where the species is generally not considered of conservation concern.