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Panicum dichotomiflorum Michaux var. dichotomiflorum . Section: Dichotomiflora. Spreading Panicgrass, Fall Panicgrass. Phen: Mar-Nov. Hab: Marshy shores, exposed wet soils, alluvial deposits in floodplain forests, spoil banks, ditches. Dist: E. Canada west to BC, south to FL, TX, and Mexico; Bahamas (Sorrie & LeBlond 1997); West Indies (Cuba, Haiti, Guadelupe); widespread in s. Central America and South America.

Origin/Endemic status: Native

Taxonomy Comments: Plants with geniculate bases, enlarged lower nodes and sheaths, and panicles with included peduncles and divergent branches have been recognized as var. geniculatum (Alph. Wood) Fernald.

Synonymy : = FlGr, K4, NE; = Panicum dichotomiflorum Michx. ssp. dichotomiflorum – Ar, NY; < Panicum dichotomiflorum Michx. – C, ETx1, GW1, Mex, Mi, NcTx, Pa, RAB, S, Tat, Tn, Tx, WV, Lelong (1986); > Panicum dichotomiflorum Michx. – SFla; < Panicum dichotomiflorum Michx. ssp. dichotomiflorum – Zuloaga & Aliscioni (2023), Zuloaga (2022); > Panicum dichotomiflorum Michx. ssp. dichotomiflorum – FNA25; Panicum dichotomiflorum Michx. var. dichotomiflorum; < Panicum dichotomiflorum Michx. var. dichotomiflorum – Va; > Panicum dichotomiflorum Michx. var. dichotomiflorum – F, G, Il, K1, K3, W; >< Panicum dichotomiflorum Michx. var. dichotomiflorum – HC; > Panicum dichotomiflorum Michx. var. geniculatum (Wood) Fernald – F, G, Il, W; > Panicum lacustre Hitchc. & Ekman – FNA25, HC, K1, K3, SFla

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Wetland Indicator Status:

  • Atlantic and Gulf Coastal Plain: FACW (taxonomic lump from wetland indicator species)
  • Eastern Mountains and Piedmont: FACW (name change)
  • Great Plains: FAC (taxonomic split from wetland indicator species)
  • Midwest: FACW (taxonomic split from wetland indicator species)
  • Northcentral & Northeast: FACW (taxonomic split from wetland indicator species)

Heliophily : 8

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image of plant© Keith Bradley | Original Image ⭷
image of plant© Lowell Urbatsch | Original Image ⭷
image of plant© Lowell Urbatsch, spikelet | Original Image ⭷
image of plant© Eric M Powell, some rights reserved (CC BY-NC), uploaded by Eric M Powell source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Nate Hartley, some rights reserved (CC BY-NC), uploaded by Nate Hartley source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Eric M Powell, some rights reserved (CC BY-NC), uploaded by Eric M Powell source CC-BY-NC, permission granted to NCBG | Original Image ⭷
image of plant© Nate Hartley, some rights reserved (CC BY-NC), uploaded by Nate Hartley source CC-BY-NC, permission granted to NCBG | Original Image ⭷

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