Habit: tree, shrub
Taxon group: dicots
Plant: monoecious, dioecious
Leaf: position: alternate
Leaf: nature: simple
Leaf: venation: pinnate
Leaf: blade: margin: entire, lobed, cleft, parted or divided, dentate, doubly serrate
Leaf: stipules: present
Flowers: inflorescence: catkin
Flowers: sexuality: unisexual
Flowers: perianth number: 0, 1, 2, 3, 4, 5, 6
Flowers: sepal number/calyx lobes: 1, 2, 3, 4, 5, 6
Flowers: petal number/corolla lobes: 0
Flower: bract: present
Stamen: number: 2, 3, 4
Stamen: arrangement: antepetalous, alternate or antesepalous
Stamen: anthers: opening by longitudinal slits, 2-celled
Stamen: filaments: connate into 1 tube or bundle
Pistil: style: styles more than 1
Pistil: ovary: 2-loculed
Pistil: ovule: 1 per locule, 2 per locule
Ovary: position: inferior
Fruit: types and characters: a nut (incl. achene, caryopsis, schizocarp, pyrene, etc.), winged/samara
Fruit: seed: 1 seed
Seed: embryo: straight
Seed: endosperm: seeds without endosperm
Google Image Search: Link
Dictionary of The Families & Genera of Chinese Seed Plants: Link
Vascular Plant Type Catalog at NYBG: Link
