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Spiranthes magnicamporum

Sheviak

Great Plains Ladies'-tresses

G3Vulnerable (G3G4) Found in 2 roadless areas NatureServe Explorer →
G3VulnerableGlobal Rank
Identity
Unique IDELEMENT_GLOBAL.2.128169
Element CodePMORC2B0K0
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
CITESAppendix II
Endemicoccurs (regularly, as a native taxon) in multiple nations
KingdomPlantae
PhylumAnthophyta
ClassMonocotyledoneae
OrderOrchidales
FamilyOrchidaceae
GenusSpiranthes
Other Common Names
Great Plains ladies'-tresses (EN) Spiranthe (FR)
Concept Reference
Kartesz, 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 Comments
Spiranthes magnicamporum, by definition, is a stable diploid species within the S. cernua complex. The Spiranthes cernua complex is notorious for hybridization and, although ecologically isolated within their sympatric ranges, a hybrid race of S.magnicamporum and the sand prairie ecotype of S. cernua occurs in the Chicago region. (Catling, 1982)
Conservation Status
Rank MethodExpertise without calculation
Review Date2016-07-04
Change Date2016-07-04
Edition Date1997-01-10
Edition AuthorsBeckman, J., TNC-HQ; S.L.Neid, MRO.
Range Extent>2,500,000 square km (greater than 1,000,000 square miles)
Number of Occurrences81 to >300
Rank Reasons
Widely distributed in the central United States, and into south eastern Canada, with disjuncts in the southwest and southeast United States. Favors dry grasslands with limestone bedrock near the surface. Locally infrequent in Huron County, Michigan, but individuals are often scattered. There are greater than 100 occurrences across a large range.
Range Extent Comments
Eastern Great Plains, Great Lakes and Midwest regions, with disjunct populations in Utah, Colorado, New Mexico and Alabama-Mississippi (Luer 1975). Also into Ontario and Manitoba (Kartesz unpublished data 1995).
Occurrences Comments
Extant populations of Spiranthes magnicamporum occur in: Alabama (36--3A-ranked, 1C, 1D; 10 counties) Arkansas (1D), Georgia (6), Illinois (43 counties), Iowa (6 records, but listed S3), Kansas (12), Kentucky (13--3A, 7B, 1C, 2D), Louisiana (1), Michigan (approximately 100 occurrences --ranked S3S4-- in 7 counties), Minnesota (25 records in 16 counties), Missouri (2 counties), Ohio (30--1A, 2B, 3C, 7D), South Dakota (10--1A, 1B, 1C, 3D), Wisconsin (14 counties), Ontario (approximately 50). (Ranks listed were assigned to EORs by individual states and all may not align with compiled RANKSPECS.)
Threat Impact Comments
Threats include forest succession, soil disturbance or compaction, loss of habitat to agriculture, overgrazing.
Ecology & Habitat

Habitat

Variable, but often associated with calcareous soils: dry or wet prairie, also limestone glades (Missouri, South Dakota), interdunal soils (Michigan), riverbanks and floodplains (New Mexico, South Dakota).
Other Nations (2)
United StatesN3
ProvinceRankNative
IowaS3Yes
IndianaS2Yes
IllinoisS3Yes
WisconsinS3Yes
MississippiS2Yes
ArkansasS1Yes
AlabamaS3Yes
OhioS3Yes
NebraskaSNRYes
KentuckyS2Yes
New YorkS1Yes
TennesseeS1Yes
South DakotaS3Yes
TexasSNRYes
PennsylvaniaSXYes
LouisianaS2Yes
OklahomaSNRYes
ColoradoSNRYes
UtahSNRYes
GeorgiaS1Yes
KansasS2Yes
North DakotaSNRYes
New MexicoS2Yes
MichiganS3Yes
MinnesotaSNRYes
MissouriSNRYes
VirginiaS1Yes
CanadaN3
ProvinceRankNative
ManitobaS1Yes
OntarioS3Yes
Plant Characteristics
DurationPERENNIAL
Economic Value (Genus)No
Roadless Areas (2)
Arkansas (1)
AreaForestAcres
Clifty CanyonOzark-St. Francis National Forest1,963
Missouri (1)
AreaForestAcres
Big Creek Rare II Study AreaMark Twain National Forest9,277
References (13)
  1. Argus, G.W. and K.M. Pryer. 1990. Rare Vascular Plants of Canada. Our Natural Heritage. Canadian Museum Nature. Ottawa. 191+ pp.
  2. Case, F. W. 1983. The genus <i>Spiranthes</i> in Michigan. The Michigan Botanist 22:79-92.
  3. Case, F. W. 1987. Orchids of the Western Great Lakes Region. Cranbrook Institue of Science.
  4. Catling, P.M. 1982. Breeding systems of northeastern North American <i>Spiranthes</i> (Orchidaceae). Canadian Journal of Botany 60:3017-3039.
  5. Flora of North America Editorial Committee (FNA). 2002a. Flora of North America north of Mexico. Vol. 26. Magnoliophyta: Liliidae: Liliales and Orchidales. Oxford Univ. Press, New York. xxvi + 723 pp.
  6. Kartesz, 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.
  7. Kartesz, J.T. 1995. Species distribution data at county level for vascular plants of the United States, from unpublished data files at the North Carolina Botanical Garden, February, 1995.
  8. Luer, C.A. 1975. The native orchids of the United States and Canada, excluding Florida. New York Botanical Garden. New York.
  9. McCance, R.M., Jr., and J.F. Burns, eds. 1984. Ohio endangered and threatened vascular plants: Abstracts of state-listed taxa. Division Natural Areas and Preserves, Ohio Dept. Natural Resources, Columbus. 635 pp.
  10. Mohlenbrock, R.H., and D.M. Ladd. 1978. Distribution of Illinois vascular plants. Southern Illinois Univ. Press, Carbondale, IL. 282 pp.
  11. Ownbey, G. B., and T. Morley. 1991. Vascular plants of Minnesota: A checklist and atlas. University of Minnesota Press, Minneapolis.
  12. Sheviak, C.J. 1973. A new <i>Spiranthes</i> from the grasslands of central North America. Botanical Museum Leaflets 23(7):285-297.
  13. Summers, B. 1996. Missouri Orchids. Conservation Commission of the State of Missouri. Jefferson City, MO.