Panicum flexile - (Gattinger) Scribn.
Wiry Witch Grass
Other English Common Names: Wiry Panicgrass
Other Common Names: wiry panicgrass
Taxonomic Status: Accepted
Related ITIS Name(s): Panicum flexile (Gatt.) Scribn. (TSN 40918)
Unique Identifier: ELEMENT_GLOBAL.2.139099
Element Code: PMPOA4K0S0
Informal Taxonomy: Plants, Vascular - Flowering Plants - Grass Family
 
Kingdom Phylum Class Order Family Genus
Plantae Anthophyta Monocotyledoneae Cyperales Poaceae Panicum
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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: Panicum flexile
Taxonomic Comments: Panicum flexile is a member of the Panicum capillare complex.
Conservation Status
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NatureServe Status

Global Status: G5
Global Status Last Reviewed: 06Oct1997
Global Status Last Changed: 06Oct1997
Rounded Global Status: G5 - Secure
Reasons: There are more than 150 occurrences of this species in the eastern half of the United States and in southern Ontario. Confusion of Panicum flexile with other members of the Panicum capillare complex may cause it to be overlooked, suggesting even greater abundance. (94-11-14 comments: In Kentucky, widespread and locally abundant in limestone areas, adventive on gravel roads, and widely scattered in old fields, according to Julian Campbell (1994).)
Nation: United States
National Status: N4N5
Nation: Canada
National Status: N4 (13Nov2017)

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 (SNR), Arkansas (SNR), Connecticut (SU), District of Columbia (SX), Florida (SNR), Georgia (S3?), Illinois (S3S4), Indiana (SNR), Iowa (SU), Kansas (SNR), Kentucky (S5), Louisiana (S2), Maine (SNR), Maryland (S1), Massachusetts (SNR), Michigan (SNR), Mississippi (SNR), Missouri (SNR), Nebraska (SNR), New Jersey (S1), New York (S3), North Carolina (S1), North Dakota (SU), Ohio (SNR), Oklahoma (SNR), Pennsylvania (S2S3), South Dakota (SU), Tennessee (SNR), Texas (S1), Utah (SNR), Vermont (S1), Virginia (S4), West Virginia (S1), Wisconsin (SNR)
Canada Ontario (S4), Quebec (S2)

Other Statuses

NatureServe Global Conservation Status Factors

Range Extent Comments: Eastern North America: Florida to Mississippi, northern Louisiana, northeast Texas, north to west New England, southwest Quebec, southern Ontario, and southeast Wisconsin Louisiana.

Number of Occurrences: 81 to >300
Number of Occurrences Comments: County occurrence records: in >10 counties in Illinois, Indiana, Kansas, Michigan, Missouri, Mississippi, Pennsylvania, Virginia, and Ontario; occurrences in <10 counties in Florida, Georgia, Louisiana, Maryland, North Carolina, New Jersey, New York, Oklahoma, Texas, Vermont, Wisconsin, and West Virginia.

Population Size Comments: Three occurrences in New York alone have 10,000-20,000 plants each; sufficiently common throughout range to go un-tracked in most states.

Overall Threat Impact Comments: Succession and loss of habitat to development are threats. Certain habitats for this species are relatively unthreatened, however, other habitat types are threatened, i.e. calcareous fens.

Short-term Trend: Relatively Stable (<=10% change)
Short-term Trend Comments: Many A-ranked sites are stable; many more historical occurrences than extant in New England (Pennsylvania, Maryland, West Virginia), but this is probably more a function of a lack of targetted searching, not decline.

Intrinsic Vulnerability Comments: Occupies a variety of habitat which allows flexibility. It is an annual species requiring disturbance.

Other NatureServe Conservation Status Information

Distribution
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Global Range: Eastern North America: Florida to Mississippi, northern Louisiana, northeast Texas, north to west New England, southwest Quebec, southern Ontario, and southeast Wisconsin Louisiana.

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, CT, DCextirpated, FL, GA, IA, IL, IN, KS, KY, LA, MA, MD, ME, MI, MO, MS, NC, ND, NE, NJ, NY, OH, OK, PA, SD, TN, TX, UT, VA, VT, WI, WV
Canada ON, QC

Range Map
No map available.


U.S. Distribution by County Help
State County Name (FIPS Code)
LA Caddo (22017)*, Grant (22043), Vernon (22115), Winn (22127)
MD Anne Arundel (24003)*, Baltimore (city) (24510)*, Baltimore County (24005)*, Harford (24025), Montgomery (24031)*, Worcester (24047)*
NC Durham (37063), Granville (37077), Henderson (37089), Orange (37135)*
NJ Sussex (34037), Warren (34041)
NY Erie (36029), Genesee (36037), Jefferson (36045), St. Lawrence (36089), Washington (36115)
PA Bedford (42009)*, Berks (42011)*, Blair (42013), Bucks (42017)*, Chester (42029)*, Delaware (42045)*, Lancaster (42071)*, Lehigh (42077)*, Montgomery (42091)*, Northampton (42095), Schuylkill (42107)*
VT Chittenden (50007), Rutland (50021)
WV Hardy (54031), Jefferson (54037), Monongalia (54061)*, Monroe (54063)*
* Extirpated/possibly extirpated
U.S. Distribution by Watershed Help
Watershed Region Help Watershed Name (Watershed Code)
02 Rondout (02020007)+*, Middle Delaware-Musconetcong (02040105)+, Lehigh (02040106)+*, Lower Delaware (02040202)+*, Schuylkill (02040203)+*, Chincoteague (02040303)+*, Upper Juniata (02050302)+, Raystown (02050303)+*, Lower Susquehanna (02050306)+, Upper Chesapeake Bay (02060001)+*, Gunpowder-Patapsco (02060003)+*, South Branch Potomac (02070001)+, North Branch Potomac (02070002)+*, Shenandoah (02070007)+, Middle Potomac-Catoctin (02070008)+*, Upper James (02080201)+*
03 Middle Roanoke (03010102)+*, Upper Tar (03020101)+*, Upper Neuse (03020201)+, Haw (03030002)+*
04 Niagara (04120104)+, Lower Genesee (04130003)+, Chaumont-Perch (04150102)+, Upper St. Lawrence (04150301)+, Raquette (04150305)+, Mettawee River (04150401)+, Lake Champlain (04150408)+
05 Cheat (05020004)+*, Middle New (05050002)+*, Greenbrier (05050003)+*
06 Upper French Broad (06010105)+
08 Dugdemona (08040303)+, Little (08040304)+
11 Saline Bayou (11140208)+, Cross Bayou (11140304)+*
12 Lower Sabine (12010005)+
+ Natural heritage record(s) exist for this watershed
* Extirpated/possibly extirpated
Ecology & Life History
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Basic Description: Monocot; Poaceae; Wiry Witch Grass. Slender, annual panic grass with elliptic inflorescence.
Habitat Comments: Highly variable--dry, exposed limestone bluffs, serpentine barrens, and limestone quarries to limestone floodplains, calcareous seepage fens and damp, sandy areas.
Economic Attributes Not yet assessed
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Management Summary
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Stewardship Overview: Establish a disturbance regime to maintain open habitat suitable for this taxa.
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 Author: S.L.Neid, MRO
Management Information Edition Date: 22Mar1993
Management Information Edition Author: HONORA BURAS, LSU

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
  • Allen, C.M. 1992. Grasses of Louisiana, 2nd edition.

  • Bouchard, A., D. Barabé, M. Dumais et S. Hay 1983. Les plantes vasculaires rares du Québec. Syllogeus no 48. Musées nationaux du Canada. Ottawa. 75 p.

  • Darbeyshire, S.J., and J. Cayouette. 1995. Identification of the species in the Panicum capillare complex (Poaceae) from eastern Canada and adjacent New York State. Canadian Journal of Botany 73:333-348.

  • Deam, C. C. 1940. Flora of Indiana. Division of Forestry, Dept. of Conservation, Indianapolis, Indiana. 1236 pp.

  • Dolan, R.W. and M.E. Moore. 2017 Indiana Plant Atlas. [S.M. Landry and K.N. Campbell (original application development), USF Water InstituteUniversity of South Florida]. Butler University Friesner Herbarium, Indianapolis, Indiana.

  • Dore, W.G. and J. McNeill. 1980. Grasses of Ontario. Monograph 26, Agriculture Canada, Research Branch, Biosystematics Research Institute, Ottawa, Ontario. 566 pp.

  • Dore, W.G. et J. McNeill 1980. Grasses of Ontario. Monograph 26. Research Branch, Agriculture Canada, Ottawa. 565 p.

  • Dore, W.G., and J. McNeill. 1980. Grasses of Ontario. Research Branch, Agriculture Canada, Monograph 26.

  • Flora of North America Editorial Committee. 2007a. Flora of North America North of Mexico. Vol. 24. Magnoliophyta: Commelinidae (in part): Poaceae, part 1. Oxford Univ. Press, New York. xxviii + 911 pp.

  • Hitchcock, A.S. 1950. Manual of the Grasses of the United States. Dover Publishers, Inc. New York. 2nd edition revised by Agnes Chase. 2 volumes.

  • Hitchcock, A.S. 1951. Manual of the grasses of the United States. 2nd edition revised by Agnes Chase. [Reprinted, 1971, in 2 vols., by Dover Publications, Incorporated, New York.]

  • Hough, M. Y. 1983. New Jersey Wild Plants. Harmony Press, Harmony, New Jersey. 414 pp.

  • 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.

  • Kartesz, J.T. 1996. Species distribution data at state and province level for vascular plant taxa of the United States, Canada, and Greenland (accepted records), from unpublished data files at the North Carolina Botanical Garden, December, 1996.

  • Radford, A. E., H. E. Ahles, and C. R. Bell. 1968. Manual of the Vascular Flora of the Carolinas. University of North Carolina Press, Chapel Hill. 1183 pp.

  • Swink, F., and G. Wilhelm. 1994. Plants of the Chicago Region. Morton Arboretum. Lisle, Illinois.

  • TYNDALL, R.W. AND P.M. FARR. 1989. VEGETATION STRUCTURE AND FLORA OF A SERPENTINE PINE-CEDAR SAVANNA IN MARYLAND. CASTANEA 54(3):191-199.

  • Voss, E. G. 1972. Michigan flora: A guide to the identification and occurrence of the native and naturalized seed-plants of the state. Part I. Gymnosperms and Monocots. Cranbrook Institute of Science. 488 pp.

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