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Aristida geniculata Rafinesque. Northeastern Slim-spike Three-awn. Phen: Aug-Oct. Hab: Dry open habitats, disturbed areas. Dist: The distribution and habitats of A. geniculata and A. longespica in our area are poorly known, pending further field and herbarium investigation.

Origin/Endemic status: Native

Other Comments: The phylogenetic study of Cerros-Tlatilpa, Columbus, & Barker (2011) suggests that this taxon is not closely related to A. longespica, and should be given species rank.

Synonymy: = NY; = Aristida longespica Poir. var. geniculata (Raf.) Fernald – Ar, C, ETx1, FlGr, HC, K1, Mo1, NcTx, NE, Pa, Va, WH3; > Aristida intermedia Scribn. & C.R.Ball – F, G, S, Tx; > Aristida intermedia Scribn. & C.R.Ball var. intermedia – Il; < Aristida longespica Poir. – RAB, Tat, W, WV; > Aristida longespica Poir. – G, Tx; < Aristida longespica Poir. var. geniculata (Raf.) Fernald – FNA25, K3, Allred (1986); > Aristida longespica Poir. var. geniculata (Raf.) Fernald – F, Il

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: FACU (taxonomic split from wetland indicator species)
  • Eastern Mountains and Piedmont: UPL (taxonomic split from wetland indicator species)
  • Great Plains: FACU (taxonomic split from wetland indicator species)
  • Midwest: FACU (taxonomic split from wetland indicator species)
  • Northcentral & Northeast: FACU (taxonomic split from wetland indicator species)

Heliophily ?: 9

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