莼菜科

Habit: herb

Important diagnostics: aquatic plants

Taxon group: dicots

Stem: rhizome

Leaf: position: alternate, verticillate/whorled

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

Flowers: inflorescence: solitary

Flowers: sexuality: bisexual

Flowers: symmetry: actinomorphic

Flowers: sepal number/calyx lobes: 3

Flowers: sepal position: all free from one another

Flowers: petal number/corolla lobes: 3

Flowers: petal position: all free from one another

Stamen: number: 3, 4, 5, 6, 7, 8, 9, 10+

Stamen: anthers: opening by longitudinal slits

Pistil: carpel: 2, 3, 4, 5, 6+

Pistil: ovary: 1-loculed

Pistil: ovule: 1 per locule, 2 per locule, 3 per locule

Pistil: pistil: carpels free from each other

Fruit: types and characters: a capsule (incl. pod, follicle, etc.), 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