Dicot Herbs
Hydrocotyle umbellata
Marsh Pennywort
NATIVE
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Round, disc-shaped leaves with scalloped edges; petioles attach to center of disc leaf
Credit: Kristie Gianopulos. Used with permission.
 
 
 
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Coefficient of Conservatism Values (more info)
Mountains
n/a
Piedmont
4
Coastal Plain
4
National Wetland Plant List Status (more info)
Eastern Mountains/Piedmont
OBL
Coastal Plain
OBL

FIELD ID CHARACTERISTICS:

Distinctive disk-shaped leaves with petiole attached in the center. Flowering stalks are smooth and long.

Description: Low-growing, creeping, semi-aquatic, perennial herb, 15 to 25 cm high, rooted at nodes; sometimes in floating mats.

Leaves: Alternate, simple, round leaves with scalloped margins and long petioles 4 to 15 cm long.

Flowers/Fruit: Small, white flowers in simple umbels, with stalks as long as leaf petioles. Blooms April to September, fruits soon after.

Habit and Range: Fresh and brackish marshes, shaded shores of ponds and lakes, ditches, swamps. More common in the Coastal Plain than in the Piedmont.

Typical Max Plant Height (m):
0.2
Leaf Arrangement:
Alternate   
Leaf Division:
Simple   
Leaf Margin:
Scalloped   
Leaf Shape:
Round   
Inflorescence Color:
White   
Fruit Color:
Green, Brown   
  
Lifespan:
Perennial
Group:
Dicot
Family:
Araliaceae / Ginseng
Ecoregions Found In:
Piedmont, Coastal Plain


COMMON CONFUSIONS:

Hydrocotyle umbellata (marsh pennywort) can be confused with Centella erecta (erect centella), which has petioles that are not attached at the center of their heart-shaped leaves.

Click here to view Centella erecta.

Link to side-by-side comparisons page