Carolinas and Georgia

711

Spermatophytes (seed plants): Angiosperms (flowering plants): Monocots: Alismatales

WEAKLEY'S FLORA (11/30/12):
Hydrilla verticillata   FAMILY Hydrocharitaceae

SYNONYMOUS WITH PLANTS NATIONAL DATABASE:
Hydrilla verticillata   FAMILY Hydrocharitaceae

 

COMMON NAME:
Hydrilla


map
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Look for it in ponds, lakes, rivers, per Weakley's Flora

Submersed aquatic (rooted); Forb
Perennial
Dioecious (a monoecious form exists north of SC)

Non-native: Old World
Documented growing wild in GA NC SC

Uncommon, but often locally abundant


INVASIVE

This plant is causing problems in natural areas outside its native range, according to authorities such as:

 

Aquatic

LEAVES:
Simple
Whorls of 4-8
Margins toothed with sharp stout teeth

FLOWER:
Summer
Whitish sepals & translucent petals in female flowers, male reddish-brown
3 sepals in pistillate flowers
3 petals in pistillate flowers
Flowers solitary on elongate flexuous stalks

FRUIT:
Summer/Fall
Capsule

 

TO LEARN MORE about this plant, look it up in a good book!



Hydrilla verticillata   FAMILY Hydrocharitaceae

Hydrilla