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Welcome to the Lady Bird Johnson Wildflower Center's collection of 82,852 plant images.

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Podostemum ceratophyllum

Podostemum ceratophyllum Michx.

Hornleaf Riverweed

Podostemaceae (River-weed Family)

USDA Symbol: POCE3



Podostemum ceratophyllum (Hornleaf riverweed) #45907

Image Information

Photographer: Cressler, Alan
County: Richland
State: SC
Location Notes: Congaree River.
Accession date: 2015-08-14
Filename: A_C_IMG3547.JPG
Slide Index: 4776473635_ffe5856bac_o.JPG
Restrictions: Unrestricted
Collection: Wildflower Center Digital Library
Original Format: Digital
Orientation: Portrait
Shot: Close up of a flowering plant ex situ. Photographer's note: "Riverweed is an obscure aquatic plant that can be locally abundant in rivers and streams of reasonable water quality. It is uncommon in most areas of the south. I occasionally see the plant when I am working. I guess that says something about the quality of the streams I usually work in. I was working in South Carolina last week and after work I waded out into the beautiful Congaree River just below the confluence of the Broad and Saluda Rivers. Riverweed coated many of the submerged rocks. I noticed on some of the patches there were very small white structures. Upon closer inspection I determined they were flowers. All the flowers I saw were under water. I finally found a rock that was small enough to move to the surface for photos. The flowers are tiny. I assume that most colonies never bloom or simply go unnoticed. None of my botanist friends have ever seen it bloom"
Date Taken: 2010-07-07
NPIN Image Id: 45907

Image Verification

This image has been verified.
By: Joseph A. Marcus
Date: 2015-08-13

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Additional resources

USDA: Find Podostemum ceratophyllum images in USDA Plants
Google: Search Google Images for Podostemum ceratophyllum