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Polygonum amphibium

Polygonum amphibium L.

 

Water Smartweed

KingdomPlantaePlants, but not fungi, lichens, or algae (from Stearn’s Botanical Latin)
SubkingdomTracheobiontaVascular plants—plants with a “circulatory system” for delivering water and nutrients
DivisionMagnoliophytaFlowering plants, also known as angiosperms
ClassMagnoliopsidaDicotyledons—plants with two initial seed leaves
SubclassCaryophyllidaeCacti, many other succulents, carnivorous plants, and leadworts
OrderCaryophyllalesIncludes cacti, carnations, amaranths, ice plants, and many carnivorous plants
FamilyPolygonaceaeKnotweed or smartweed family
GenusPolygonumGreek poly, “many,” and gonu, “knee,” for the swollen jointed stems
Speciesamphibium

About plant names...

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Polygonum amphibium (Water Smartweed)

9/14/2013 · Whitewater Rafting Trip, Barryville to Pond Eddy Leg, Delaware River, Barryville, PA
≈ 4 × 6" (11 × 16 cm)

Polygonum amphibium (Water Smartweed)

8/16/2016 · John Tinker Trail, Nashua River, Groton, MA

Polygonum amphibium (Water Smartweed)

9/14/2013 · Whitewater Rafting Trip, Barryville to Pond Eddy Leg, Delaware River, Barryville, PA
≈ 4 × 6" (10 × 14 cm)

Polygonum amphibium description by Thomas H. Kent, last updated 5 Oct 2016.

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Polygonum amphibium (Water Smartweed)

9/14/2013 · Whitewater Rafting Trip, Barryville to Pond Eddy Leg, Delaware River, Barryville, PA
≈ 2½ × 3½" (7.3 × 9 cm)

Polygonum amphibium (Water Smartweed)

8/16/2016 · John Tinker Trail, Nashua River, Groton, MA

Polygonum amphibium (Water Smartweed)

9/14/2013 · Whitewater Rafting Trip, Barryville to Pond Eddy Leg, Delaware River, Barryville, PA
≈ 3½ × 4" (9.2 × 10 cm)

Polygonum amphibium (Water Smartweed)

8/16/2016 · John Tinker Trail, Nashua River, Groton, MA

Range:

About this map...