This very primitive plant forms dense evergreen colonies with an interesting texture, 1/4" wide stiff unbranched hollow stems are upright and completely leafless, 'flowers' from late April to September are actually sporophylls at the top of stems that appear swollen & somewhat dark, spreads very easily (!) by creeping rhizomes, can grow in water up to 1' deep. Historically used for scouring floors and other items (older names include Gun-Bright and Pewter-Wort).
0.5 to 6 foot
Plant Hardiness Zones: Zone 3a-11
Native Range: NL to s. AL, south to FL, TX and CA. Rare in RI.
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