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Hornleaf Riverweed

Podostemum ceratophyllum

In the Carolinas and Georgia, found in attached to rocks and dams in rapidly or slowly flowing water. Weakley, Flora of the Southeastern United States (2025), Carolinas & Georgia edition What its natural habitat tells you

8
Modest

Native to Arkansas. How scores work Is it native here?

Profile 65%

Light
Partial shade, Full sun
Soil moisture
Standing water
Will it fit your yard?

At a glance

Life cycle
Perennial
Bloom
May to July

Not yet recorded · Height · Spread · Leaves

This plant is missing most of its facts, so Quercus is looking them up in old botany books.

Recorded in 9 Arkansas counties.

Also found with this plant

Wildlife whose habitat models include habitats this plant grows in, in Arkansas. Shared habitat, not food. 73 animals.

Widespread birds also seen here (58)

Found in many habitats here, so not listed above.

All wildlife of Arkansas

Ecological relationships

Who uses this plant?

What these records mean

0CaterpillarsGenus host records with ranges including AR
0BeesSoutheastern regional records
0Specialist beesPollen specialists
—BirdsRecorded genus food-resource interactions; not a state feeding claim

No records yet · Ants · Beetles · Flies · Adult butterflies / moths · Other wasps · Other insects

Growing and identification

Plant details

Family
Podostemaceae
Flower color
Green

Safety has not been reviewed for this plant; check toxicity and thorns before planting.

Growing sources and scope
Also known as

Hornleaf; Riffle Weed; River Weed

Conservation status

Arkansas rankS3
Global rankG5
AR statusNot verified
Federal statusNot verified

Conservation source Global and federal source

In your garden

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Sources