Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Caryophyllales
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Sold under various cultivar names ("Bat Wings", "Lance Corporal", "Painter's Palette"), and often misrepresented as the native Persicaria virginiana, per Weakley's Flora.
INCLUDED WITHIN Floristic Synthesis of North America. BONAP (Kartesz, 2021)
SYNONYMOUS WITH New names in Persicaria virginiana (Shaw, 2008)
Persicaria virginiana var. filiformis
NameThatPlant has no pictures at this time. You might try this link: Flora of the Southeastern United States
Habitat: Suburban woodlands, escaping from horticultural use, per Weakley's Flora
Non-native: east Asia
CLICK HERE to see a map, notes, and images from Weakley's Flora of the Southeastern US.
Click here to see a map showing all occurrences known to SERNEC, a consortium of southeastern herbaria. (Zoom in to see more detail.)
IS THE PLANT "ARMED"?
Stems, petioles and leaves unarmed
Red rarely white
Irregularly 4-lobed calyx
Inflorescence spikelike, interrupted
TO LEARN MORE about this plant, look it up in a good book!
If a search such as "Carex leptalea var. leptalea" doesn't deliver the results you want, try "Carex leptalea".
Or, to minimize chances of a misspelling, try just "Carex le".
Less is more: If "pencil flower" doesn't deliver the results you want, try "pencil".