>

Persicaria species [Polygonaceae]

Click on the images below to see larger versions.

Scientific Name Persicaria hydropiperoides (Polygonum hydropiperoides) USDA PLANTS Symbol
POHY2
Common Name Swamp Smartweed ITIS Taxonomic Serial No.
518733
Family Polygonaceae (Buckwheat) SEINet
Reference
Click Here
Description Habitat: Wet soils in marshes, along streams or ponds and in prairies; sea level to 7,000 ft.
Plant: Nearly erect or decumbent annual or perennial, sometimes rooting at nodes, sometimes branched above, 4 to 40 inches tall; smooth stems have swollen interodes with brownish ocrea 3/8 to 3/4-inch long with bristles up to 3/8-inch long.
Leaves: Alternate, lanceolate 1-1/4 to 6-3/4 inches long and 1/3 to 3/4-inch wide with pointed tips.
Inflorescence: Terminal or arising from axils, sometimes interrupted, racemes 1-5/8 to 3-1/8 inches long of many small flowers; each flower about 1/4-inch across with 5 white tepals, 8 stamens and 3 styles; smooth white or pinkish calyx 1/8-inch long.
Bloom Period: June to November.
References: SEINet, "Wildflowers of Texas" by Michael Eason and "Manual of the Vascular Plants of Texas" by Correll and Johnston.
BONAP Distribution Map

Texas Status:
Native
Scientific Name Persicaria punctata (Polygonum punctatum) USDA PLANTS Symbol
POPU5
Common Name Dotted Smartweed, Water Smartweed ITIS Taxonomic Serial No.
518749
Family Polygonaceae (Buckwheat) SEINet
Reference
Click Here
Description Habitat: Full or partially sunny areas, moist to wet conditions.
Plant: Erect to somewhat sprawling annual or short-lived perennial; 1 to 2-1/2 feet tall; stems branching occasionally, hairless and somewhat broader at leaf axils.
Leaves: Narrow lanceolate-ovate, up to 6 inches long and 3/4-inch wide; short petioles, sometimes sessile; ocrea (sheath at leaf base wrapping around stem) membraneous and hairless, except for a few long bristles at upper edge.
Inflorescence: Terminal racemes of many small flowers, each about 1/8-inch across, white greenish-white sepals (or tepals), outside dotted with small light or dark glands; 6 to 8 stamens and 2 to 3 syles.
Bloom Period: June to November.
References: Illinois Wildflowers and SEINet.
BONAP Distribution Map

Texas Status:
Native

© Tom Lebsack 2022