SafePlants

Vernal Water-Starwort: A Delicate Aquatic Plant

Vernal water-starwort, scientifically known as Callitriche palustris, is a fascinating aquatic plant often found in still or slow-moving waters.

Considerations for Pets

• This plant is often found in ponds where goldfish are kept.

Taxonomy and Nomenclature

• Scientific Name: Callitriche palustris L.
• Common Names: Vernal water-starwort, Spring waterstarwort, Water Starwort
• Family: Callitrichaceae (Water-Starwort Family), now sometimes classified under Plantaginaceae (Plantain family).
• Order: Callitrichales
• Synonyms: Callitriche palustris var. verna, Callitriche aquatica, Callitriche fallax, Callitriche verna, Callitriche vernalis

Distribution and Habitat

• Vernal water-starwort thrives in vernal pools and other wet areas.
• It is found in various locations, including Forest Co., Wisconsin; Garrett Co., Maryland; and near Billy Meadows Guard Station in northern regions.
• It is adaptable and can tolerate exposure when water levels decline.

Morphological Characteristics and Growth Habits

• Callitriche palustris is an evergreen perennial, growing up to 0.3 meters (1 foot).
• It flowers from July to August, with seeds ripening from September to October.
• It can be found as an annual aquatic or terrestrial herb.
• Clusters of floating leaves typically measure 1.0 to 1.5 cm across.
• The plant exhibits polymorphic leaves: submerged leaves are linear while other leaves form floating rosettes.

Ecological Role

• Ducks and other waterfowl consume this plant.