Callitriche heterophylla
larger water-starwort, greater waterstarwort, larger waterstarwort, variedleaf waterstarwort, differentleaf waterstarwort, twoheaded water-starwort
Family
Callitrichaceae
Leaf Arrangement
opposite
Leaf Margin
entire
Leaf Type
simple
Leaf Shape
linear, lanceolate, obovate, spatulate
Growth Form
forb, emergent aquatic, submerged aquatic, aquatic
Flower Color
green, white
Flower Month
February - October
Height (meters)
0.0 - 0.1
Milky Sap
No
Armed/Unarmed
Unarmed
Origin
native
Lifespan
annual, perennial
Growing Season
Warm season
Wetland Class
OBL
Prairie Coefficient of Conservatism
0
Field Characters
Leaves highly polymorphic: the lower submersed leaves linear to linear-lanceolate, membranceous, 1-nerved, glabrous, apex bidentate, margins entire, bases connate; transition to floating leaves gradual; floating leaves in a compact rosette, obovate to spatulate, 6 - 15 mm long, 3 -7 mm wide, 3-nerved from near the base, glabrous, apex rounded, margins entire, base attenuate and connate.
Habitat
Pools, sluggish streams, ditches, and on mud.