Dig deeper at SERNEC, a consortium of southeastern herbaria.

Check out EDDMapS.org to see where this has been reported.

In the 14 years prior to 1982, H. morsus-ranae increased its area of occurrence in North America by 3 times. Although it differs from most other North American aquatics in having very rounded leaves with five prominent and converging primary veins, these characters do not distinguish it from floating-leaved forms of Limnobium spongia. Read more in Status and identification of Hydrocharis morsus-ranae & Limnobium spongia (Hydrocharitaceae)... (Catling & Dore, 1982)

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Hydrocharis morsus-ranae   FAMILY Hydrocharitaceae

SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)

Hydrocharis morsus-ranae

SYNONYMOUS WITH Flora of North America north of Mexico, vol. 2 (1993)

Hydrocharis morsus-ranae

COMMON NAME:
European Frog's-bit

NameThatPlant has no pictures at this time. You might try this link: Flora of the Southeastern United States

WEAKLEY'S FLORA OF THE SOUTHEASTERN US (4/14/23):
Hydrocharis morsus-ranae   FAMILY Hydrocharitaceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Hydrocharis morsus-ranae   FAMILY Hydrocharitaceae

SYNONYMOUS WITH Floristic Synthesis of North America. BONAP (Kartesz, 2021)
Hydrocharis morsus-ranae

SYNONYMOUS WITH Flora of North America north of Mexico, vol. 2
Hydrocharis morsus-ranae