Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Caryophyllales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (2/8/20):
Polygonella americana
FAMILY
Polygonaceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Read more about Southern Jointweed at Vascular Plants of North Carolina.
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Polygonella americana
FAMILY
Polygonaceae
SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2015)
Polygonum americanum
SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 063-06-001:
Polygonella americana FAMILY Polygonaceae
SYNONYMOUS WITH Manual of the Southeastern Flora (Small, 1933, 1938)
Polygonella americana
COMMON NAME:
Southern Jointweed, Showy Jointweed
To see larger pictures, click or hover over the thumbnails.
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USDA-NRCS PLANTS Database / Britton, N.L., and A. Brown. 1913 pnd_poam3_001_lvd
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John Cely jec_polygonella1_02
September Richland County SC
A hillside in full bloom is a stunning sight - John Cely
)
John Cely jec_7956
October Richland County SC
When not in bloom it resembles a small cedar, per www.missouriplants.com (Tenaglia).
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John Cely jec_7956b
October Richland County SC
Petals absent. Sepals to 3mm long, white, per Vascular Flora of the Carolinas (Radford, Ahles, & Bell, 1968).
)
John Cely jec_7960
October Richland County SC
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (2/8/20):
Polygonella americana
FAMILY
Polygonaceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Polygonella americana
FAMILY
Polygonaceae
SYNONYMOUS WITH
Floristic Synthesis of North America. BONAP (Kartesz, 2015)
Polygonum americanum
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 063-06-001:
Polygonella americana
FAMILY
Polygonaceae
SYNONYMOUS WITH
Manual of the Southeastern Flora (Small, 1933, 1938)
Polygonella americana
2552
Forb (sometimes somewhat woody at base)
Perennial
Habitat: Longleaf pine sandhills, other dry woodlands, glades, and barrens with sandy or rocky soil, per Weakley's Flora
Native to the Carolinas & Georgia
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.)
LEAVES:
Simple
Alternate
FLOWER:
Summer/Fall
Sepals: White
Bisexual
5 sepals (three inner, two outer)
Petals absent
Superior ovary
FRUIT:
Summer/Fall
Reddish-brown
Nutlet
TO LEARN MORE about this plant, look it up in a good book!
- Guide to the Wildflowers of SC (Porcher & Rayner, 2001) p229
- Native Shrubs and Woody Vines of the Southeast (Foote & Jones, 1989) p058
- Field Guide to the Wildflowers of Georgia (Chafin, 2016) p294
- Woody Plants of the Southeastern US: A Winter Guide (Lance, 2004) p244
- Wildflowers of the Sandhills Region (Sorrie, 2011) p107