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Polygonum cespitosum Blume nom. inq.
Persicaria posumbu (Buch.-Ham. ex D. Don) H. Gross
Polygonum caespitosum Blume orth. var.
Oriental lady’s thumb, bristly lady’s thumb
| Kingdom | Plantae | Plants, but not fungi, lichens, or algae |
| Subkingdom | Tracheobionta | Vascular plants—plants with a “circulatory system” for delivering water and nutrients |
| Division | Magnoliophyta | Flowering plants, also known as angiosperms |
| Class | Magnoliopsida | Dicotyledons—plants with two initial seed leaves |
| Subclass | Caryophyllidae | Cacti, many other succulents, carnivorous plants, and leadworts |
| Order | Caryophyllales | Includes cacti, carnations, amaranths, ice plants, and many carnivorous plants |
| Family | Polygonaceae | Knotweed or smartweed family |
| Genus | Polygonum | Greek poly, “many,” and gonu, “knee,” for the swollen jointed stems |
| Species | cespitosum | |
About plant names...
[An article has not been written yet.]
Polygonum cespitosum description by Thomas H. Kent, last updated 25 May 2020.
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9/19/2013 · Harvard, MA
≈ 6 × 8" (14 × 20 cm) 
5/17/2016 · Tom and Susan’s, Pepperell, MA  ID is uncertain
9/19/2013 · Harvard, MA
≈ 8 × 6" (20 × 14 cm)
9/19/2013 · Harvard, MA
≈ 6 × 7" (14 × 16 cm)
9/19/2013 · Harvard, MA
≈ 6 × 8" (14 × 20 cm)
Range:
About this map...
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