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Coastal Plain Bristlegrass,
Setaria corrugata
Bristles green or purple, to 2cm long - much exceeding the spikelets, per Manual of the Grasses of the United States (Hitchcock & Chase, 1950).
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Coastal Plain Bristlegrass,
Setaria corrugata
Bristles 1-3 below each spikelet, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Nodding Foxtail Grass,
Setaria faberi
Panicle conspicuously nodding; spikelets about 3mm long, per Manual of the Grasses of the United States (Hitchcock & Chase, 1950).
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Dune Sandbur,
Cenchrus tribuloides
Involucre of spines fused into a bur; spines 4-8mm long, spikelets concealed, per Weakley's Flora (2015).
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Tender Fountaingrass,
Cenchrus setaceus
Pennisetum's spikelets are surrounded by an involucre of bristles, per Manual of the Grasses of the United States (Hitchcock & Chase, 1950).
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Shortleaf Basketgrass,
Oplismenus setarius
Racemes subglobose, each w about 5 spikelets; awn of first glume 4-8mm long, per Manual of the Grasses of the United States (Hitchcock & Chase, 1950).
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Rough Barnyard-grass,
Echinochloa muricata var. muricata
Spikelets > 3.5mm long. Sterile lemma usually awned, the awn 6-25mm long, per Weakley's Flora.
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Swamp Barnyard-grass,
Echinochloa walteri
Panicle branches spikelike, spikelets congested on short secondary branches, per Wildflowers of the Eastern United States (Duncan & Duncan, 1999).
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Water Paspalum,
Paspalum fluitans
Panicle branches extend beyond outermost spikelets & disarticulate at maturity, per Weakley's Flora.
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Sour Paspalum,
Paspalum conjugatum
Spikelets solitary, ovate, light yellow, conspicuously ciliate-fringed, per Manual of the Grasses of the United States (Hitchcock & Chase, 1950).
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Dallis-grass,
Paspalum dilatatum ssp. dilatatum
Terminal racemes with 3-7 alternate spreading branches, spikelets 4-rowed, per Forest Plants of the Southeast and Their Wildlife Uses (Miller & Miller, 2005).
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Dallis-grass,
Paspalum dilatatum ssp. dilatatum
Spikelets ovate, acuminate, 3-4mm [anthers & feathery stigmas protruding], per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Dallis-grass,
Paspalum dilatatum ssp. dilatatum
Spikelets have long silky hairs like P. urvillei, but are larger (3-3.5mm), per Wildflowers of the Eastern United States (Duncan & Duncan, 1999).
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Vasey Grass,
Paspalum urvillei
Spikelets 4-rowed, light-green often with dark flowering parts extending, per Forest Plants of the Southeast and Their Wildlife Uses (Miller & Miller, 2005).
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Vasey Grass,
Paspalum urvillei
Spikelets 2-3mm with conspicuous silky hairs, a rare occurrence in Paspalum, per Wildflowers of the Eastern United States (Duncan & Duncan, 1999).
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Field Crowngrass,
Paspalum laeve var. laeve
Spikelets orbicular, 2.5-3mm broad, in two rows, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Early Crowngrass,
Paspalum praecox
Racemes terminal, longest usually < 6cm. Spikelets flattened, yellowish-green, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Florida Paspalum,
Paspalum floridanum
Racemes 3-13cm long (longest > 6cm). Spikelets in 4 rows or by abortion 3 or 2, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Florida Paspalum,
Paspalum floridanum
Spikelets suborbicular or broadly ellipsoid; pedicels 1-2mm long, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Florida Paspalum,
Paspalum floridanum
Spikelets 3-4mm long, flat-rounded, white waxy sometimes brown or peeling, per Forest Plants of the Southeast and Their Wildlife Uses (Miller & Miller, 2005).
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Florida Paspalum,
Paspalum floridanum
Terminal racemes with 2-7 ascending branches, w large spikelets in 2 rows, per Forest Plants of the Southeast and Their Wildlife Uses (Miller & Miller, 2005).
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Slender Crabgrass,
Digitaria filiformis var. filiformis
Spikelet, showing shiny dark brown fertile lemma beneath upper glume.
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Hairy Crabgrass,
Digitaria sanguinalis
Spikelets about 3mm long, sterile lemma strongly nerved, per Manual of the Grasses of the United States (Hitchcock & Chase, 1950).
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Browntop Millet,
Urochloa ramosa
Panicles of asending spikelike racemes along an angled axis, per Manual of the Grasses of the United States (Hitchcock & Chase, 1950).
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Browntop Millet,
Urochloa ramosa
Spikelets borne singly in each row, 2-4mm long, per Weakley's Flora.
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Big Carpetgrass,
Axonopus furcatus
Spikelets with lower lemmas adjacent to the branch axes (lower glumes absent), per Weakley's Flora.
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American Cupscale,
Sacciolepis striata
Inflorescence a slender panicle w branches so short it may appear spikelike, per Wildflowers of the Eastern United States (Duncan & Duncan, 1999).
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Beaked Panicum,
Coleataenia anceps ssp. anceps
Split from Panicum because of its subsessile spikelets, among other things, per Vascular Plants of North Carolina.
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Beaked Panicum,
Coleataenia anceps ssp. anceps
Rather crowded somewhat curved subsecund spikelets, set obliquely, per Manual of the Grasses of the United States (Hitchcock & Chase, 1950).
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Redtop Panicgrass,
Coleataenia rigidula ssp. rigidula
Spikelets greeinish-purple, attached on 1 side of the panicle branches, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005).
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Seaside Panicum,
Panicum amarum
Spikelets of inflorescence dense, forming a narrow panicle to 14" long and 2" wide, per Guide to the Wildflowers of SC, 2nd ed. (McMillan, Porcher, Rayner, & White; 2022).
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Switchgrass,
Panicum virgatum var. virgatum
Spikelets 3.5-6mm long with the tip acuminate, per Wildflowers of the Sandhills Region (Sorrie, 2011).
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Blunt Switchgrass,
Panicum virgatum var. cubense
Spikelets are purplish, becoming tan-colored, 2.8-3.2mm long with acute tip, per Wildflowers of the Sandhills Region (Sorrie, 2011).
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Fall Panicum,
Panicum dichotomiflorum var. dichotomiflorum
Spikelets narrowly oblong-ovate, usually about 2.5mm long, acute, per Manual of the Grasses of the United States (Hitchcock & Chase, 1950).
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Wiry Panicgrass,
Panicum flexile
Mature panicle slender, branches ascending-spreading; spikelets long-acuminate, per Weakley's Flora.
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Nerved Witchgrass,
Dichanthelium neuranthum
Vernal panicle branches strongly ascending to erect; spikelets 1.8-2.2mm long, per Weakley's Flora.
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Sandy Woods Witchgrass,
Dichanthelium arenicoloides
In general it resembles D. aciculare, but its spikelets are more elongate, per Vascular Plants of North Carolina.
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Ravenel's Witchgrass,
Dichanthelium ravenelii
Panicle 7-12cm long. Spikelets 4-4.3mm, sparsely papillose-pubescent, per Manual of the Grasses of the United States (Hitchcock & Chase, 1950).
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Woolly Witchgrass,
Dichanthelium acuminatum var. acuminatum
Panicle 2-10cm long, branches scaberulous. Spikelets 1.4-2.2mm long, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Slender-stemmed Witchgrass,
Dichanthelium acuminatum var. fasciculatum
Spikelets 1.5-2.0mm long, per Weakley's Flora (2020).
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White-haired Witchgrass,
Dichanthelium villosissimum var. villosissimum
Generally distinguished by hairy foliage & spikelets, spikelet size (2-2.5mm), &
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Forked Witchgrass,
Dichanthelium dichotomum var. dichotomum
Spikelets glabrous, 1.8-2.3mm long; widest vernal blades 3-8(10)mm wide, per Weakley's Flora (2020).
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Blue Witchgrass,
Dichanthelium caerulescens
Vernal panicle 3-7cm long; spikelets obovoid, turgid, glabrous, per Manual of the Grasses of the United States (Hitchcock & Chase, 1950).
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Small-fruited Witchgrass,
Dichanthelium microcarpon
Differs from D. dichotomum var. dichotomum in having smaller spikelets and ...
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Small-fruited Witchgrass,
Dichanthelium microcarpon
Spikelets small: 1.4-1.9 mm long, per Vascular Plants of North Carolina.
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Long-ligule Witchgrass,
Dichanthelium longiligulatum
Panicle 3-8cm long, branches spreading to ascending. Spikelets 1.2-1.5mm, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Erectleaf Witchgrass,
Dichanthelium erectifolium
Panicle rather narrow, densely flowered; spikelets nearly spherical, per Manual of the Grasses of the United States (Hitchcock & Chase, 1950).
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Round-fruited Witchgrass,
Dichanthelium sphaerocarpon
Panicle 4-13cm long, branches spreading-ascending. Spikelets 1.4-1.6mm, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Many-flowered Witchgrass,
Dichanthelium polyanthes
Panicle 5-20cm long. Spikelets 1.2-1.6mm, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Many-flowered Witchgrass,
Dichanthelium polyanthes
long-elliptical (or cylindrical) inflorescence of numerous small spikelets, per Vascular Plants of North Carolina.
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Velvet Witchgrass,
Dichanthelium scoparium
Spikelets 2.4-2.6mm long, obovate, turgid, papillose-pubescent, per Manual of the Grasses of the United States (Hitchcock & Chase, 1950).
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Bosc's Witchgrass,
Dichanthelium boscii
Spikelets 3.7-4.2mm long; rachis and spreading-ascending branches villous, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
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Bosc's Witchgrass,
Dichanthelium boscii
Spikelets relatively large.
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Bosc's Witchgrass,
Dichanthelium boscii
Panicle 6-12cm long, spikelets 4-4.5mm long, about half as wide, per Manual of the Grasses of the United States (Hitchcock & Chase, 1950).
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Longleaf Cupgrass,
Eriochloa michauxii var. michauxii
Axis & raceme rachises densely velvety-pubescent; spikelets appressed-villous, per Manual of the Grasses of the United States (Hitchcock & Chase, 1950).
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Wrinkled Jointgrass,
Mnesithea rugosa
Inflorescence section, with ridged spikelets.
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Carolina Jointgrass,
Mnesithea cylindrica
Spikelets tightly crowded one atop another, with the male section above the female section, per Vascular Plants of North Carolina.
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Carolina Jointgrass,
Mnesithea cylindrica
Each spikelet has a number of little pits (in vertical rows) on the glumes, per Vascular Plants of North Carolina.
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Carolina Jointgrass,
Mnesithea cylindrica
Sessile spikelets 4-5mm, the first glume pitted along the nerves, per Manual of the Grasses of the United States (Hitchcock & Chase, 1950).