Flora of the Southeastern United States

Dichanthelium neuranthum (Grisebach) LeBlond. Common name: Nerved Witchgrass. Phenology: May-Nov. Habitat: Maritime wet grasslands, Piedmont prairie-like barrens. Distribution: Disjunct in se . and central NC, se. SC, GA, FL, MS, e. TX, AR; Bahamas, Cuba, and Belize.

Origin/Endemic status: Native

Taxonomy Comments: Can occur with the similar-appearing D. caerulescens, from which it differs by having spikelets that are longer (1.8-2.2 mm vs. 1.4-1.8), rounded summits vs. obtuse to sub-acute, and pubescent vs. glabrous; longer first glumes (0.8-1.0 mm vs. 0.3-0.8); leaves 15× or more as long as wide vs. 10-15×; and a nearly strict panicle. The plants from the Piedmont of NC match descriptions of Panicum ovinum, known from dry to moist open ground and prairies in e. TX, MS, and AR when last recognized (HC). It is treated here as a synonym of D. neuranthum.

Synonymy ⓘ: = FlGr, LeBlond (2017a) in Weakley et al (2017), LeBlond et al (2017); = Dichanthelium aciculare (Desv. ex Poir.) Gould & C.A.Clark ssp. neuranthum (Griseb.) Freckmann & Lelong — FNA25; = Panicum neuranthum Griseb. — RAB, SFla; < Dichanthelium aciculare (Desv. ex Poir.) Gould & C.A.Clark — K4, Mex, Gould & Clark (1978); > Panicum neuranthum Griseb. — HC, S, Tx; > Panicum ovinum Scribn. & J.G.Sm. — HC, S; Panicum neuranthum Griseb. Basionym: Panicum neuranthum Griseb. 1866

Links to other floras: = Dichanthelium aciculare ssp. neuranthum - FNA25

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Wetland Indicator Status:

• Atlantic and Gulf Coastal Plain: FACU (taxonomic split from wetland indicator species)
• Eastern Mountains and Piedmont: FACU (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