Dig deeper at SERNEC, a consortium of southeastern herbaria.
Read more about Horsetail Spikerush at Vascular Plants of North Carolina.
Spermatophytes (seed plants): Angiosperms (flowering plants): Monocots: Commelinids: Poales
Manual of the Southeastern Flora (Small, 1933)
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Patrick D. McMillan pdmeequisetoides_fs188
Spikes many-flowered, not wider than stem; stem knotted or jointed, per Field Guide to the Grasses, Sedges & Rushes of the US.