Home
Scapose herbs up to 1 m high. Leaves wholly or partially submerged with a flattened petiole up to 60 cm long, gradually widening to form a linear to lanceolate lamina above, up to 18 cm long and 3 cm broad but very variable. Male inflorescence forming a delicate, finely branched pseudo-umbel with the small flowers on filiform pedicels up to 1 cm long; sepals orbicular, concave, 4 mm long, delicate pale green to purplish with transparent margins; petals 1-2.5 mm long, narrow; stamens included, white; sterile carpels light green. Female inflorescence smaller than the male with fewer branches and the flowers in trimerous subsessile clusters; sepals delicate, orbiculate, concave, 1.5 mm long; petals absent(present as minute scales in robust specimens, vide Carter); carpels about 12 on a short cylindrical torus, compressed and with 2 lateral ear-shaped or horseshoe-shaped rims or folds. Achenes black, 1.5 mm long.
Scapose herb, up to 1 m high. Leaves wholly or partially submerged with a flattened petiole up to 0.6 m long. Male inflorescence forming a delicate finely branched pseudo-umbel. Stamens included, white. Flowers pale green to purplish.
A herb that grow in water. It has rhizomes or underground stems. There can also be corms 1 cm across. It grows from these and grows 60 cm high.
Slender branched inflorescences (at least the male) about 2 ft. high
An aquatic with tufted leaves about 1 ft. high
Flowers small, white or pink
