Spermatophytes (seed plants): Angiosperms (flowering plants): Monocots: Alismatales
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Spirodela polyrhiza
FAMILY
Araceae
Go to FSUS key
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Learn more about Spirodela from the Vascular Plants of North Carolina.
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Spirodela polyrrhiza
FAMILY
Lemnaceae
SYNONYMOUS WITH Flora of North America
Spirodela polyrrhiza
SYNONYMOUS WITH VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 033-01-002:
Spirodela polyrrhiza FAMILY Lemnaceae
SYNONYMOUS WITH (ORTHOGRAPHIC VARIANT) Manual of the Southeastern Flora (Small, 1933, 1938)
Spirodela polyrhiza
COMMON NAME:
Greater Duckweed, Duckmeat, Minnow-fole, Giant Duckweed
To see larger pictures, click or hover over the thumbnails.
)
Terry Holdsclaw tdh_s_polyrrhiza_1
June Catawba County NC
Upper surface of fronds sometimes with red spot in center, 7-16(21) veins, per Flora of North America.
)
Terry Holdsclaw tdh_s_polyrrhiza_2b
June Catawba County NC
Fronds obovate to circular, flat or rarely gibbous, 1-1.5x as long as wide, per Flora of North America.
COMPARE
aquatic plants
)
Terry Holdsclaw tdh_s_polyrrhiza_8294
July Catawba County NC
Fronds 2-10mm, per Flora of North America.
WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/24/22):
Spirodela polyrhiza
FAMILY
Araceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Spirodela polyrrhiza
FAMILY
Lemnaceae
SYNONYMOUS WITH
Flora of North America
Spirodela polyrrhiza
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 033-01-002:
Spirodela polyrrhiza
FAMILY
Lemnaceae
SYNONYMOUS WITH (ORTHOGRAPHIC VARIANT)
Manual of the Southeastern Flora (Small, 1933, 1938)
Spirodela polyrhiza
1459
Floating aquatic (2+ roots per frond, the roots floating); Forb
Perennial
Monoecious
Habitat: Still to slowly moving waters of ponds, lakes, beaver ponds, and swamps, per Weakley's Flora
Native to the Carolinas & Georgia
Common (uncommon in Carolina Piedmont)
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:
-
FLOWER:
Unisexual
1 stamen in staminate flowers
FRUIT:
TO LEARN MORE about this plant, look it up in a good book!
- Field Guide to Aquatic Plants of Alabama (Lovell, 2007) p65
- Guide to the Wildflowers of SC (Porcher & Rayner, 2001) p338
- Wildflowers of the Carolina Lowcountry (Porcher, 1995) p109