Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Rosids: Fabids: Malpighiales
WEAKLEY'S FLORA (5/21/15):
Podostemum ceratophyllum
FAMILY
Podostemaceae
Dig deeper at SERNEC, a consortium of southeastern herbaria.
Read more about Riverweed at Vascular Plants of North Carolina.
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Podostemum ceratophyllum
FAMILY
Podostemaceae
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 090-01-001:
Podostemum ceratophyllum
FAMILY
Podostemaceae
INCLUDING
Manual of the Southeastern Flora (Small, 1933, 1938)
Podostemon abrotanoides
INCLUDING & ORTHOGRAPHIC VARIANT
Manual of the Southeastern Flora (Small, 1933, 1938)
Podostemon ceratophyllum
COMMON NAME:
Riverweed, Threadfoot, Riffleweed
To see larger pictures, click or hover over the thumbnails.
)
JK Marlow jkm180408_1131
April McCormick County SC
Parks Mill
A highly unusual, alga-like aquatic vascular plant w narrow dissected leaves, per Wildflowers & Plant Communities of the Southern Appalachian Mountains and Piedmont.
)
JK Marlow jkm160628_126
June Polk County NC
Pearson's Falls
Small disk-like holdfasts anchor it to rocks & ledges of fast-moving streams, per Wildflowers & Plant Communities of the Southern Appalachian Mountains and Piedmont.
)
COMPARE
WEAKLEY'S FLORA (5/21/15):
Podostemum ceratophyllum
FAMILY
Podostemaceae
SYNONYMOUS WITH
PLANTS NATIONAL DATABASE:
Podostemum ceratophyllum
FAMILY
Podostemaceae
SYNONYMOUS WITH
VASCULAR FLORA OF THE CAROLINAS (Radford, Ahles, & Bell, 1968) 090-01-001:
Podostemum ceratophyllum
FAMILY
Podostemaceae
INCLUDING
Manual of the Southeastern Flora (Small, 1933, 1938)
Podostemon abrotanoides
INCLUDING & ORTHOGRAPHIC VARIANT
Manual of the Southeastern Flora (Small, 1933, 1938)
Podostemon ceratophyllum
1972
Submersed aquatic (rooted); Forb
Perennial
Native to the Carolinas & Georgia
Documented growing wild in GA NC SC
Common (rare in Coastal Plain)
Look for it attached to rocks and dams in rapidly or slowly flowing water, per Weakley's Flora
Click here to see a more detailed map from University of North Carolina at Chapel Hill Herbarium,
or click here to see a map from SERNEC, a consortium of southeastern herbaria.
LEAVES:
Simple: dissected into linear or filiform segments
Alternate
FLOWER:
Spring/Summer
Bisexual
Petals absent
2 stamens & 2 minute staminodia
Flowers in leaf axils
FRUIT:
Spring/Summer
Red
Capsule
TO LEARN MORE about this plant, look it up in a good book!