OF THE CAROLINAS & GEORGIA

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

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Persicaria hydropiperoides   FAMILY Polygonaceae   Go to FSUS key



SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Polygonum hydropiperoides   FAMILY Polygonaceae

SYNONYMOUS WITH Flora of North America north of Mexico, vol. 5 (2005)

Persicaria hydropiperoides

INCLUDING VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 063-04-016a:

Polygonum hydropiperoides var. hydropiperoides   FAMILY Polygonaceae

INCLUDING Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968)

Polygonum hydropiperoides var. opelousanum

INCLUDING Manual of the Southeastern Flora (Small, 1933, 1938)

Persicaria hydropiperoides

INCLUDING Manual of the Southeastern Flora (Small, 1933, 1938)

Persicaria opelousana

 

COMMON NAME:
Mild Waterpepper, Swamp Smartweed


         To see larger pictures, click or hover over the thumbnails.

image of Persicaria hydropiperoides, Mild Waterpepper, Swamp Smartweed

USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913    pnd_pehy7_001_lvd

        

image of Persicaria hydropiperoides, Mild Waterpepper, Swamp Smartweed

USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913    pnd_peop3_001_lvd

        

image of Persicaria hydropiperoides, Mild Waterpepper, Swamp Smartweed

USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913    pnd_pohy2_004_lvd

        

image of Persicaria hydropiperoides, Mild Waterpepper, Swamp Smartweed

Gill Newberry    gn09_p_persicaria_hydropi

September        

Flowers without dotted glands, in erect spikes with gaps between clusters, per Wildflowers of Tennessee, the Ohio Valley, and the Southern Appalachians (Horn, Cathcart, Hemmerly, & Duhl, 2005).

image of Persicaria hydropiperoides, Mild Waterpepper, Swamp Smartweed

JK Marlow    jkm140909_509b

September    Greenville County    SC

Swamp Rabbit Trail

Calyx roseate below, pink or cream-white at the lobe apices, per Aquatic and Wetland Plants of Southeastern United States (Godfrey & Wooten, 1979 & 1981).

image of Persicaria hydropiperoides, Mild Waterpepper, Swamp Smartweed

JK Marlow    jkm140909_514

September    Greenville County    SC

Swamp Rabbit Trail

With the habit of P. setaceum, but more slender and of lower stature, per Aquatic and Wetland Plants of Southeastern United States (Godfrey & Wooten, 1979 & 1981).

image of Persicaria hydropiperoides, Mild Waterpepper, Swamp Smartweed

JK Marlow    jkm140909_514b

September    Greenville County    SC

Swamp Rabbit Trail

Leaves usually less than 15mm wide, 3.5 or more times longer than wide, per Wildflowers of the Eastern United States (Duncan & Duncan, 1999).

image of Persicaria hydropiperoides, Mild Waterpepper, Swamp Smartweed

JK Marlow    jkm140909_515

September    Greenville County    SC

Swamp Rabbit Trail

image of Persicaria hydropiperoides, Mild Waterpepper, Swamp Smartweed

Gill Newberry    gn10_p_persicaria_hydrope

October        

 

 

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Persicaria hydropiperoides   FAMILY Polygonaceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Polygonum hydropiperoides   FAMILY Polygonaceae

SYNONYMOUS WITH Flora of North America north of Mexico, vol. 5
Persicaria hydropiperoides

INCLUDING VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 063-04-016a:
Polygonum hydropiperoides var. hydropiperoides   FAMILY Polygonaceae

INCLUDING Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968)
Polygonum hydropiperoides var. opelousanum

INCLUDING Manual of the Southeastern Flora (Small, 1933, 1938)
Persicaria hydropiperoides

INCLUDING Manual of the Southeastern Flora (Small, 1933, 1938)
Persicaria opelousana

 

Find by SCIENTIFIC NAME:

1973

Terrestrial or sometimes semi-aquatic; Forb
Perennial

Habitat: swamp forests, streams, ditches, per Weakley's Flora

Native to the Carolinas & Georgia

Common (uncommon in GA & NC Mountains)

map
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

LEAVES:
Simple
Alternate

FLOWER:
Spring/Summer/Fall
Usually white
4-parted calyx
Petals absent
Superior ovary
Bisexual, or often functionally unisexual

Inflorescence spikelike, uninterrupted or interrupted proximally

FRUIT:
Spring/Summer/Fall
Brown
Nutlet

 

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



 


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