Dichanthelium ovale (Elliott) Gould & C.A. Clark var. addisonii (Nash) Gould & C.A. Clark. Low Stiff Witchgrass. Phen: May-Oct. Hab: Dry to damp sandy woods and fields. Dist: MA and MN south to Panhandle FL and TX, also in n. Mexico.

ID notes: See note under D. ovale var. ovale and D. aciculare.

Origin/Endemic status: Native

Synonymy: = K1, K3, Va, Gould & Clark (1978); = Dichanthelium commonsianum (Ashe) Freckmann – Mi, NY; = Panicum commonsianum Ashe – RAB; = Panicum ovale Elliott var. addisonii (Nash) C.F.Reed; = Panicum ovale Elliott var. pseudopubescens (Nash) Lelong – Lelong (1984); < Dichanthelium ovale (Elliott) Gould & C.A.Clark – Mex; < Dichanthelium ovale (Elliott) Gould & C.A.Clark ssp. pseudopubescens (Nash) Freckmann & Lelong – FNA25; < Dichanthelium portoricense (Desv. ex Ham.) B.F.Hansen & Wunderlin – K4; > Dichanthelium wilmingtonense (Ashe) Wipff – Wipff (2020); > Panicum addisonii Nash – HC, S; < Panicum commonsianum Ashe – C; > Panicum commonsianum Ashe – HC, S; > Panicum commonsianum Ashe var. addisonii (Nash) Fernald – F, G; > Panicum commonsianum Ashe var. commonsianum – F, G, Pa; > Panicum mundum Fernald – F, G, HC; > Panicum wilmingtonense Ashe – HC, S

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Wetland Indicator Status:

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

Heliophily ?: 8