Carolinas and Georgia

1972

Spermatophytes (seed plants): Angiosperms (flowering plants): Eudicots: Core Eudicots: Rosids: Fabids: Malpighiales

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)
Podostemon abrotanoides

INCLUDING & ORTHOGRAPHIC VARIANT Manual of the Southeastern Flora (Small, 1933)
Podostemon ceratophyllum

 

COMMON NAME:
Riverweed, Threadfoot, Riffleweed


map
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Look for it attached to rocks and dams in rapidly or slowly flowing water, per Weakley's Flora

Submersed aquatic (rooted); Forb
Perennial

Native to the Carolinas & Georgia
Documented growing wild in GA NC SC

Common (rare in Coastal Plain)

 

Aquatic

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!



Podostemum ceratophyllum   FAMILY Podostemaceae

Riverweed, Threadfoot, Riffleweed