Identity
Unique IDELEMENT_GLOBAL.2.131562
Element CodePMPOA5L150
Record TypeSPECIES
ClassificationSpecies
Classification StatusStandard
Name CategoryVascular Plant
IUCNLeast concern
Endemicoccurs (regularly, as a native taxon) in multiple nations
KingdomPlantae
PhylumAnthophyta
ClassMonocotyledoneae
OrderCyperales
FamilyPoaceae
GenusSetaria
SynonymsSetaria geniculata(Lam.) Beauv.
Other Common NamesMarsh Bristlegrass (EN) marsh bristlegrass (EN) Yellow Foxtail Grass (EN)
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 CommentsCalled Setaria geniculata in many older references, but treated as Setaria parviflora by Kartesz (1994 checklist). The European species Setaria gracilis has sometimes been included in S. geniculata, but is maintained as a separate species by Kartesz and by Wagner et al. (1990). Kartesz (1999) includes S. gracilis in S. parviflora.
Conservation Status
Rank Method Rank calculation - Biotics v2
Review Date2024-10-31
Change Date1988-08-04
Edition Date2024-10-31
Edition AuthorsAnnable, C. (1993), rev. L. Morse (1996), rev. N. Ventrella (2024)
Threat ImpactUnknown
Range Extent>2,500,000 square km (greater than 1,000,000 square miles)
Number of Occurrences> 300
Rank ReasonsSetaria parviflora is a perennial grass occurring in moist places and disturbed areas of North America, Mexico, Central America, and South America, and as an introduced species elsewhere. There are over 1,000 occurrences of this species, which are potentially threatened by development, rights-of-way maintenance, alteration of hydrology, erosion, succession, invasive species, and other threats in some places. Little is known about trends, but with a large range extent and high number of occurrences, Setaria parviflora is considered secure.
Range Extent CommentsSetaria parviflora has a widespread range, occurring as a native species in North America, Mexico, Central America, and South America, and is is an introduced species elsewhere (POWO 2024). In North America, it occurs from Iowa and New York south to Florida and Texas, and throughout the western United States from Washington and Idaho south to California and New Mexico (FNA 2003). It is most frequent in the Atlantic and Gulf coastal regions. Its native range extent was estimated using herbarium specimens and photo-based observations documented between 1993 and 2024 (GBIF 2024, iNaturalist 2024, SEINet 2024).
Occurrences CommentsBy applying a 1 km separation distance to herbarium records and photo-based observations documented between 1993 and 2024 within Setaria parviflora's native range, there are estimated to be over 1,000 occurrences rangewide (GBIF 2024, iNaturalist 2024, SEINet 2024).
Threat Impact CommentsAlthough threats are not widely documented, Setaria parviflora is likely threatened by development, rights-of-way maintenance, alteration of hydrology, erosion, succession, invasive species, and other threats in some places, though there is insufficient data, including anecdotal accounts, to understand scope and severity of threats for this species.