Herbs, either aquatic or of wet places
4 orders, 16 families, 500 species

ALISMATACEAE - Water Plantain or Arrowhead Family

Herbs, annual or perennial, aquatic or wetland, with stout rhizomes

Leaves basal, basally sheating petiole

Flowers unisexual or bisexual, actinomorphic, infl. whorled, in racemes or panicles

Most common genus - Sagittaria

Economic uses: important wildlife food plants, rhizomes are edible in some

Diagnostic characteristics: aquatic or wetland herbs, floral parts in 3's, white, leaf arrowhead-shaped