Trillium flexipes - Raf.
Drooping Trillium
Other English Common Names: Nodding Wakerobin
Other Common Names: nodding wakerobin
Synonym(s): Trillium gleasonii Fern.
Taxonomic Status: Accepted
Related ITIS Name(s): Trillium flexipes Raf. (TSN 43071)
French Common Names: trille à pédoncule incliné
Unique Identifier: ELEMENT_GLOBAL.2.146626
Element Code: PMLIL200B0
Informal Taxonomy: Plants, Vascular - Flowering Plants - Lily Family
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Monocotyledoneae Liliales Liliaceae Trillium
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Concept Reference
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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.
Concept Reference Code: B94KAR01HQUS
Name Used in Concept Reference: Trillium flexipes
Conservation Status
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NatureServe Status

Global Status: G5
Global Status Last Reviewed: 13Aug2015
Global Status Last Changed: 08Apr1986
Ranking Methodology Used: Ranked by inspection
Rounded Global Status: G5 - Secure
Nation: United States
National Status: N5
Nation: Canada
National Status: N1 (14Oct2017)

U.S. & Canada State/Province Status
Due to latency between updates made in state, provincial or other NatureServe Network databases and when they appear on NatureServe Explorer, for state or provincial information you may wish to contact the data steward in your jurisdiction to obtain the most current data. Please refer to our Distribution Data Sources to find contact information for your jurisdiction.
United States Alabama (S2S3), Arkansas (S1), Delaware (SNR), Georgia (S1), Illinois (S3S4), Indiana (SNR), Iowa (S3), Kentucky (SNR), Maryland (S1), Michigan (SNR), Minnesota (SNR), Mississippi (S1), Missouri (SNR), New York (S1), North Carolina (S1), Ohio (SNR), Pennsylvania (S2), Tennessee (SNR), Virginia (SH), West Virginia (S2), Wisconsin (SNR)
Canada Ontario (S1)

Other Statuses

Canadian Species at Risk Act (SARA) Schedule 1/Annexe 1 Status: E (05Jun2003)
Committee on the Status of Endangered Wildlife in Canada (COSEWIC): Endangered (26Apr2009)
Comments on COSEWIC: Reason for designation: A showy perennial species currently present at only two small locations in southern Ontario. It has not been found at five additional sites where it was documented historically. This riparian species is at on-going risk of habitat degradation from the invasion of exotic plants. It is also at risk from recreational activities and the effects of stochastic events due to its small population size.

Status history: Designated Endangered in April 1996. Status re-assessed and confirmed in May 2000 and in April 2009.

NatureServe Global Conservation Status Factors

Range Extent Comments: Arkansas and Missouri to Minnesota and to the east coast. In Canada it is found in Ontario.

Number of Occurrences: 21 to >300

Overall Threat Impact Comments: Highly threatened by land-use conversion, habitat fragmentation, and forest management practices (Southern Appalachian Species Viability Project 2002).

Other NatureServe Conservation Status Information

Distribution
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Global Range: Arkansas and Missouri to Minnesota and to the east coast. In Canada it is found in Ontario.

U.S. States and Canadian Provinces

Due to latency between updates made in state, provincial or other NatureServe Network databases and when they appear on NatureServe Explorer, for state or provincial information you may wish to contact the data steward in your jurisdiction to obtain the most current data. Please refer to our Distribution Data Sources to find contact information for your jurisdiction.
Color legend for Distribution Map

U.S. & Canada State/Province Distribution
United States AL, AR, DE, GA, IA, IL, IN, KY, MD, MI, MN, MO, MS, NC, NY, OH, PA, TN, VA, WI, WV
Canada ON

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
AL Etowah (01055), Jackson (01071), Lawrence (01079), Marshall (01095), Morgan (01103), Winston (01133)
AR Stone (05137)
GA Walker (13295)
MD Cecil (24015)*, Harford (24025)*, Howard (24027)
MS Tishomingo (28141)
NC Cherokee (37039), Henderson (37089), Swain (37173)*
NY Chenango (36017)*, Genesee (36037), Livingston (36051)*, Monroe (36055), Ontario (36069)*, Seneca (36099)*, Wayne (36117)*
PA Allegheny (42003)*, Armstrong (42005), Beaver (42007)*, Crawford (42039)*, Erie (42049)*, Indiana (42063), Lancaster (42071), Mercer (42085)*, Washington (42125), Westmoreland (42129)*, York (42133)
VA Buchanan (51027)*, Dickenson (51051)*, Lee (51105)*, Scott (51169)*
WV Kanawha (54039)*, Pleasants (54073)*, Wetzel (54103)*, Wood (54107)
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
02 Chenango (02050102)+*, Lower Susquehanna (02050306)+, Gunpowder-Patapsco (02060003)+
03 Upper Broad (03050105)+, Upper Coosa (03150105)+, Middle Coosa (03150106)+, Sipsey Fork (03160110)+
04 Niagara (04120104)+, Lower Genesee (04130003)+, Irondequoit-Ninemile (04140101)+*, Seneca (04140201)+*
05 French (05010004)+*, Middle Allegheny-Redbank (05010006)+, Conemaugh (05010007)+, Lower Allegheny (05010009)+*, Lower Monongahela (05020005)+, Upper Ohio (05030101)+*, Shenango (05030102)+*, Little Muskingum-Middle Island (05030201)+*, Little Kanawha (05030203)+, Lower Kanawha (05050008)+*, Upper Levisa (05070202)+*
06 South Fork Holston (06010102)+*, Tuckasegee (06010203)+*, Powell (06010206)+*, Middle Tennessee-Chickamauga (06020001)+, Hiwassee (06020002)+, Wheeler Lake (06030002)+, Pickwick Lake (06030005)+
11 Middle White (11010004)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History Not yet assessed
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Economic Attributes
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Economically Important Genus: Y
Management Summary Not yet assessed
Help
Population/Occurrence Delineation Not yet assessed
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Population/Occurrence Viability
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U.S. Invasive Species Impact Rank (I-Rank) Not yet assessed
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Authors/Contributors
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NatureServe Conservation Status Factors Edition Date: 21Mar1996
NatureServe Conservation Status Factors Author: Logan, John.

Botanical data developed by NatureServe and its network of natural heritage programs (see Local Programs), The North Carolina Botanical Garden, and other contributors and cooperators (see Sources).

References
Help
  • Ambrose, J. D., and J. V. Jalava. 2007. Recovery Strategy for Drooping Trillium (Trillium flexipes) in Canada. In Species at Risk Act Recovery Strategy Series. Environment Canada. Ottawa [Draft] v + xx pp.

  • Argus, G.W., K.M. Pryer, D.J. White and C.J. Keddy (eds.). 1982-1987. Atlas of the Rare Vascular Plants of Ontario.. Botany Division, National Museum of National Sciences, Ottawa.

  • Case, F.W., Jr., and G.L. Burrows. 1962. The genus Trillium in Michigan: some problems of distribution and taxonomy. Papers of the Michigan Academy of Science, Arts, and Letters 47:189-200.

  • Case, Jr., Frederick W., and Roberta B. Case. 1997. Trilliums. Timber Press, Portland.

  • Flora of North America Editorial Committee. 2002a. Flora of North America North of Mexico. Vol. 26. Magnoliophyta: Liliidae: Liliales and Orchidales. Oxford Univ. Press, New York. xxvi + 723 pp.

  • Foster, R.F. and A.G. Harris. 2007. Update - COSEWIC Status Report on Drooping Trillium Trillium flexipes. COSEWIC, 32 pp. Draft.

  • Gleason, Henry A. and A. Cronquist. 1991. Manual of Vascular Plants of Northeastern United States and Adjacent Canada. The New York Botanical Garden, Bronx, New York. 910 pp.

  • Harris, A.G. and R.F. Foster. 2007. Summary of 2007 Field Surveys for Drooping Trillium (Trillium flexipes). Environment Canada, 13 pp., Draft.

  • Holmgren, Noel. 1998. The Illustrated Companion to Gleason and Cronquist's Manual. Illustrations of the Vascular Plants of Northeastern United States and Adjacent Canada. The New York Botanical Garden, Bronx, New York.

  • Kartesz, J. T. 1991. Synonym names from 1991 checklist, as extracted by Larry Morse, TNC, June 1991.

  • 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.

  • McLeod, D. 1995. Status report on drooping trillium (TRILLIUM FLEXIPES Raf.) in Canada. Committee on the Status of Endangered Wildlife in Canada (COSEWIC), Ottawa, Ontario. 49 pp.

  • Mcleod, David. 1996. Status Report on the Drooping Trillium Trillium flexipes in Canada. COSEWIC. 49 pp.

  • Mitchell, Richard S. and Gordon C. Tucker. 1997. Revised Checklist of New York State Plants. Contributions to a Flora of New York State. Checklist IV. Bulletin No. 490. New York State Museum. Albany, NY. 400 pp.

  • Oldham, M.J. 1992. Some recent Middlesex County plant discoveries. The Cardinal 146: 24-27.

  • Oldham, M.J. 1995. COSSARO Candidate V,T,E Species Evaluation Form for Drooping Trillium (Trillium flexipes). Unpublished report prepared by Natural Heritage Information Centre for Committee on the Status of Species at Risk in Ontario (COSSARO), Ontario Ministry of Natural Resources. 6 pp.

  • Oldham, M.J. 1996. COSSARO Candidate V,T,E, Species Evaluation Form - Feb. 1996. Drooping Trillium (Trillium flexipes). Natural Heritage Information Centre. 5 pp.

  • REED C.F. 1956. CONTRIBUTIONS TO THE FLORA OF MARYLAND, 2, THE GENUS TRILLIUM. CASTANEA 21:145-151.

  • Southern Appalachian Species Viability Project. 2002. A partnership between the U.S. Forest Service-Region 8, Natural Heritage Programs in the Southeast, NatureServe, and independent scientists to develop and review data on 1300+ regionally and locally rare species in the Southern Appalachian and Alabama region. Database (Access 97) provided to the U.S. Forest Service by NatureServe, Durham, North Carolina.

  • Stewart, W.G. and M.J. Oldham. 1995. Additions to "A Guide to the Flora of Elgin County, Ontario" for 1994. The Cardinal 158:22-23.

  • Trillium flexipes: Baltars, E. 2004 (Cylburn) 1958-05-18; Harford County, "along Stafford Road near mouth of Dear Creek."

  • Trillium flexipes: Baltars, E. 3504 (Cylburn) 1964-04-19; Harford County, "along Stafford Road near mouth of Dear Creek."

  • Trillium flexipes: Bartgis, R. 1993-05-21. 930521.026 (TAWES); Howard County, "Avalon Woods, Patapscso State Park."

  • Trillium flexipes: Boone, D.D. 1984-05-15 SN (TAWES); Howard County, "Patapsco State Park."

  • Trillium flexipes: Butler, James. SN (MARY) Pre-1968; Baltimore County, "woods, Towson, MD." Collected as T. declinatum; determined by Thomas S. Patrick 1980 (TENN) and earlier by Robert G. Johnson 1968 (WVU).

  • Trillium flexipes: Tidestrom, I. 11777 (US); Harford County, "Harve de Grace." Det. by C. Reed.

  • Weldy, T. and D. Werier. 2010. New York flora atlas. [S.M. Landry, K.N. Campbell, and L.D. Mabe (original application development), Florida Center for Community Design and Research http://www.fccdr.usf.edu/. University of South Florida http://www.usf.edu/]. New York Flora Association http://wwws.nyflora.org/, Albany, New York

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