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Common Cattail,
Typha latifolia
Fuzzy, brown cylindric spikes (cattails) persist into winter, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians.
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Narrowleaf Cattail,
Typha angustifolia
Its male and female flower spikes are separated by naked stem, per Atlantic Coastal Plain Wildflowers.
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Little Barley,
Hordeum pusillum
Spikes 2-8cm long, 5-7mm broad, per Vascular Flora of the Carolinas.
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Goosegrass,
Eleusine indica
Spikelets in 2 rows on one side of spikes, lemmas and glumes awnless, per Wildflowers of the Eastern United States.
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Bermuda Grass,
Cynodon dactylon
Several slender spikes digitate at the summit of the upright culms, per Manual of the Grasses of the United States.
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Dune Fingergrass,
Eustachys petraea
3-6 spikes arise at about the same point at stem end. Stems often decumbent, per Wildflowers of the Eastern United States.
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Eastern Skeletongrass,
Gymnopogon ambiguus
Long slender divergent or reflexed spikes set close on a slender stiff axis, per Manual of the Grasses of the United States.
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Eastern Skeletongrass,
Gymnopogon ambiguus
Spikes 10-20cm long, per Manual of the Grasses of the United States.
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Little Bluestem,
Schizachyrium scoparium var. scoparium
Flower spikes are solitary from long stalks at intervals along the stem, per Wildflowers of the Sandhills Region.
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Little Bluestem,
Schizachyrium scoparium var. scoparium
Schizachyrium's spikes not split into two racemes, like those of Andropogon, per Wildflowers of the Sandhills Region.
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Annual Greenhead Sedge,
Cyperus hortensis
Spikes 1-3, greenish, cylindric to subglobose, sessile, per Vascular Flora of the Carolinas.
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Granite Flatsedge,
Cyperus granitophilus
Spikes congested, subglobose. Bracts 2-5, 1-8cm long, 1-2mm wide, per Vascular Flora of the Carolinas.
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Fragrant Flatsedge,
Cyperus odoratus var. odoratus
Bracts numerous, 3-7mm wide. Spikes numerous, congested, loosely cylindric, per Vascular Flora of the Carolinas.
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jointed flatsedge,
Cyperus articulatus
Spikes usually numerous, congested, appearing as irregular clusters, per Vascular Flora of the Carolinas.
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Redroot Flatsedge,
Cyperus erythrorhizos
Spikes numerous, congested, cylindrical. Central sessile, lateral rays unequal, per Vascular Flora of the Carolinas.
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Yellow Nutsedge,
Cyperus esculentus +
Spikes usually numerous, loose or congested, broadly cylindric to subglobose, per Vascular Flora of the Carolinas.
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Rice-field Flatsedge,
Cyperus iria
Spikes numerous in irregularly ascending, umbellate clusters, per Vascular Flora of the Carolinas.
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Poorland Flatsedge,
Cyperus compressus
Spikes 1-6, in subglobose clusters. Peduncles to 10cm long, per Vascular Flora of the Carolinas.
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green flatsedge,
Cyperus virens
Spikes numerous in congested umbellate clusters. Spikelets digitate, per Vascular Flora of the Carolinas.
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False Nutsedge,
Cyperus strigosus
Spikes 5-10 or more, congested or open, narrowly to broadly cylindric, per Vascular Flora of the Carolinas.
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Starburst Flatsedge,
Cyperus plukenetii
Spikes strongly obovate, composed of many sharp, backward-oriented scales, per Wildflowers of the Sandhills Region.
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Pineland Flatsedge,
Cyperus retrorsus
Spikes cylindric or subcylindric, less than 1cm broad, less than 3x as long, per Vascular Flora of the Carolinas.
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Globe Sedge,
Cyperus croceus
Spikes subglobose, dense, 5-20mm broad, per Vascular Flora of the Carolinas.
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Southeastern Flatsedge,
Cyperus filiculmis
Spikes subglobose, 5-30mm broad, per Vascular Flora of the Carolinas.
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Horsetail Spikerush,
Eleocharis equisetoides
Spikes many-flowered, not wider than stem; stem knotted or jointed, per Field Guide to the Grasses, Sedges & Rushes of the US.
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Canada spikesedge,
Eleocharis geniculata
Spikes ovoid to subglobose; achene body 0.7-1.0 mm long, per Weakley's Flora.
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oval-leaf sedge,
Carex cephalophora
Terminal dense spikes w female flowers protruding outward in all directions, per Forest Plants of the Southeast and Their Wildlife Uses.
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Blunt Broom Sedge,
Carex tribuloides var. tribuloides
Inflorescences straight and stiff, the lower spikes overlapping, per Weakley's Flora.
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Blunt Broom Sedge,
Carex tribuloides var. tribuloides
Spikes 6-15, overlapping or distinct, ovoid-oblong to globose, per Flora of North America.
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Long's Sedge,
Carex longii
Inflorescences erect, 1-4.5cm long; spikes slightly separated to congested, per Weakley's Flora.
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Seersucker Sedge,
Carex plantaginea
Flowering stem usually leafless w a terminal male spike, 3-4 female spikes, per Wildflowers of Tennessee.
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lined sedge,
Carex striatula
Terminal spike staminate, lateral spikes pistillate, per Vascular Flora of the Carolinas.
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White Bear Sedge,
Carex albursina
Culm 20-35cm tall, flattened, winged. Bract blades surpassing the short spikes, per Vascular Flora of the Carolinas.
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thinfruit sedge,
Carex flaccosperma
Peduncles of terminal spikes barely to much exceeding lateral spikes, per Flora of North America.
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thinfruit sedge,
Carex flaccosperma
Lateral spikes pistillate, with 12-39 perigynia, per Flora of North America.
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Necklace Sedge,
Carex prasina
Staminate spike 3-4cm long; 2-3 pistillate spikes, 3-4.5cm long, per Vascular Flora of the Carolinas.
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Necklace Sedge,
Carex prasina
Pistillate spikes linear, elongate, drooping, per Vascular Flora of the Carolinas.
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Wretched Sedge,
Carex misera
Spikes reddish-brown; male solitary & terminal, 2-3 female below the male, per Field Guide to the Rare Plants of Georgia.
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Cherokee Sedge,
Carex cherokeensis
Staminate spikes 0-5; androgynous spikes 3-5, peduncles absent or to 12cm long, per Vascular Flora of the Carolinas.
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warty sedge,
Carex verrucosa
Terminal spike staminate, lateral spikes pistillate or androgynous, per Vascular Flora of the Carolinas.
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Blue Sedge,
Carex glaucescens
Stem terminated by a straw-colored male spike and 3-5 female spikes below, per Wildflowers of the Sandhills Region.
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Tussock Sedge,
Carex stricta
[all] spikes erect [none pendant], per Flora of North America.
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Fringed Sedge,
Carex crinita var. crinita
The 2-5" pistillate spikes have a tiny flower tucked into each scale, per Gardening with the Native Plants of Tennessee.
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Fringed Sedge,
Carex crinita var. crinita
Slim pendulous spikes on 3-5' stems, per Gardening with the Native Plants of Tennessee.
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Frank's sedge,
Carex frankii
Along the stem are 3-7 dense, greenish, cylindric, pistillate spikes , per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians.
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Sallow Sedge,
Carex lurida
Pistillate spikes oblong, 2.5-5.5cm long, 14-20mm broad, per Vascular Flora of the Carolinas.
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Sallow Sedge,
Carex lurida
Staminate spike 3-8cm long, 2mm broad. Pistillate spikes 2-3, oblong, per Vascular Flora of the Carolinas.
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Radford's Sedge,
Carex radfordii
The scales on the female-flowered spikes have long bristles, per Field Guide to the Rare Plants of Georgia.
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Florida Yellow-eyed-grass,
Xyris floridana
Mature spikes ovoid, sharply acute. Plants solitary or in small clumps, per Weakley's Flora.
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Fairywand,
Chamaelirium luteum
Pistillate flowers in racemes [with pedicels] or spikes [without pedicels], per Vascular Flora of the Carolinas.
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Cinnamon Vine,
Dioscorea polystachya
Rachis of male spikes obviously zigzagged; flowers sessile, per Flora of China.
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Common Wild Yam,
Dioscorea villosa
Staminate spikes have up to 4 flowers per node, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians.
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Common Wild Yam,
Dioscorea villosa
Female (pistillate) spikes have 1 flower per node, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians.
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Air Yam,
Dioscorea bulbifera
Flowers rarely, with fragrant spikes to 4" long hanging from leaf axils, per Invasive Plants, Guide to Identification, Impacts and Control.
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Pepper-elder,
Peperomia pellucida
Spikes can be axillary, terminal, or opposite leaves; solitary (rarely 2+), per Flora of North America.
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Australian-pine,
Casuarina equisetifolia ssp. equisetifolia
Male flowers are borne in slender cylindrical spikes at the twig tips, per www.wiki.bugwood.org.
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Tag Alder,
Alnus serrulata
Pistillate flowers borne in erect, short, ovoid, cone-like spikes, per Native Trees of the Southeast, An Identification Guide.
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Southern Red Oak,
Quercus falcata
Pistillate flowers with 3-lobed stigmas, solitary or in few-flowered spikes, per Native Trees of the Southeast, An Identification Guide.
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Blackjack Oak,
Quercus marilandica var. marilandica
Pistillate flowers with 3-lobed stigmas, solitary or in few-flowered spikes, per Native Trees of the Southeast, An Identification Guide.
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Red Mulberry,
Morus rubra
Pistillate flowers in dense spikes, per Native Trees of the Southeast, An Identification Guide.