Native & Naturalized Plants of the Carolinas & Georgia


1120

Forb
Annual

Non-native: Asia
Documented growing wild in GA NC SC

Common

Look for it in disturbed areas, ditches, per Weakley's Flora

map
To see a detailed map, click here


INVASIVE

This plant is causing problems in natural areas outside its native range, according to authorities such as:

Georgia Exotic Pest Plant Council, 2006
Kentucky Exotic Pest Plant Council, 2013
Tennessee Exotic Pest Plant Council, 2009
Virginia Department of Conservation and Recreation, 2014

 

LEAVES:
Simple
Alternate

FLOWER:
Spring/Summer/Fall
Pink
Bisexual
5-parted calyx
Petals absent
Superior ovary

FRUIT:
Spring/Summer/Fall
Black
Nutlet

 

TO LEARN MORE about this plant, look it up in a good book!



Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Caryophyllales

WEAKLEY'S FLORA (11/30/12):
Persicaria longiseta   FAMILY Polygonaceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Polygonum cespitosum var. longisetum   FAMILY Polygonaceae

SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (1968) 063-04-013:
Polygonum cespitosum var. longisetum   FAMILY Polygonaceae

SYNONYMOUS WITH Polygonum longisetum

SYNONYMOUS WITH Guide to the Vascular Plants of Florida (Wunderlin & Hansen, 2003)
Polygonum caespitosum var. longisetum

 

COMMON NAME:
Longbristle Smartweed, Bristly Lady’s-thumb, Tufted Knotweed


Click or hover over the thumbnails to see larger pictures.

image of Persicaria longiseta

JK Marlow    jkm120827_014

August    Greenville County    SC

Leaves smooth above, sparsely hairy on veins below, elliptic to lance-shaped, per Weeds of Southern Turfgrasses.

image of Persicaria longiseta

JK Marlow    jkm120827_020

August    Greenville County    SC

Racemes interrupted at least near the base, per Vascular Flora of the Carolinas.

image of Persicaria longiseta

JK Marlow    jkm080927_010

September    Greenville County    SC

image of Persicaria longiseta

JK Marlow    jkm080927_015

September    Greenville County    SC

Deep reddish-pink flowers on erect terminal spikes only 0.2" wide, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians.

image of Persicaria longiseta

JK Marlow    jkm081001_025

October    Greenville County    SC

Base of leaf is cuneate, petiole 1-5 mm long, per Vascular Flora of the Carolinas.

image of Persicaria longiseta

JK Marlow    jkm081001_028

October    Greenville County    SC

An erect annual with glabrous, terete stems, per Vascular Flora of the Carolinas.

image of Persicaria longiseta

JK Marlow    jkm081001_042

October    Greenville County    SC

The cilia on the ocreae are unmistakable: 1/4" to 3/8" long, per Wildflowers of the Southern Mountains.


click here to see other plants that look similar to this COMPARE ocreae of Jumpseed and Smartweed species

image of Persicaria longiseta

JK Marlow    jkm081001_044

October    Greenville County    SC