金鱼藻科

Habit: herb

Important diagnostics: aquatic plants

Taxon group: dicots

Leaf: position: verticillate/whorled

Leaf: blade: margin: lobed, cleft, parted or divided

Flowers: sexuality: unisexual

Flowers: perianth number: 6, 7, 8, 9+

Stamen: number: 8, 9, 10+

Pistil: style: absent, style 1, or styles more or less connate

Pistil: carpel: 1

Pistil: ovary: 1-loculed

Pistil: ovule: 1 per locule

Fruit: types and characters: a nut (incl. achene, caryopsis, schizocarp, pyrene, etc.)

Google Image Search: Link

Dictionary of The Families & Genera of Chinese Seed Plants: Link

Vascular Plant Type Catalog at NYBG: Link