Dig deeper at SERNEC, a consortium of southeastern herbaria.
Check out EDDMapS.org to see where this has been reported.
Read more about Himalayan Knotweed at Vascular Plants of North Carolina.
Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Caryophyllales
WEAKLEY'S FLORA (5/21/15):
Persicaria wallichii var. wallichii
FAMILY
Polygonaceae
(?) INCLUDED WITHIN
PLANTS NATIONAL DATABASE:
Polygonum polystachyum
FAMILY
Polygonaceae
INCLUDED WITHIN
-
Aconogonon polystachyum
INCLUDED WITHIN
-
Reynoutria polystachya
COMMON NAME:
Himalayan Knotweed, Kashmir Plume, cultivated knotweed
Click or hover over the thumbnails to see larger pictures.
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Ron Lance rwl_4284
September Haywood County NC
Roadside
Inflorescences mostly terminal, sometimes also axillary, paniclelike, per Flora of North America.
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Ron Lance rwl_4285
September Haywood County NC
Roadside
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Ron Lance rwl_4286
September Haywood County NC
Roadside
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Ron Lance rwl_4286b
September Haywood County NC
Roadside
)
Ron Lance rwl_4287
September Haywood County NC
Roadside
This particular patch is about 60' long by 20' wide.
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Ron Lance rwl_4288
September Haywood County NC
Roadside
)
Ron Lance rwl_4289
September Haywood County NC
Roadside
Leaf blade lanceolate to elliptic-lanceolate, without dark blotch, per Flora of North America.
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Ron Lance rwl_p_polystachyum
October Haywood County NC
This patch is about 15' wide by 60' long.