Habit: tree, shrub, herb
Important diagnostics: spiny stems or leaves
Hairs: stellate
Taxon group: dicots
Leaf: position: opposite, alternate, verticillate/whorled
Leaf: nature: simple, pinnately compound, palmately compound
Leaf: stipules: absent, present
Flowers: inflorescence: raceme, spike, umbel, head
Flowers: sexuality: bisexual, unisexual
Flowers: symmetry: actinomorphic
Flowers: disc: present
Flowers: sepal/calyx nature: valvate
Flowers: petal number/corolla lobes: 5, 6, 7, 8+
Flowers: petal position: all free from one another, connate or basally connate
Flowers: petal nature: valvate, imbricate
Stamen: number: 3, 4, 5, 6, 7
Stamen: arrangement: antepetalous, same number as petals or sepals, twice or more number as petals or sepals
Pistil: style: styles more than 1, style 1, or styles more or less connate
Pistil: ovary: 1-loculed, 2-loculed, 3-loculed, 4-loculed, 5-loculed, 6-loculed, 7+ loculed
Pistil: ovule: 1 per locule
Ovary: position: inferior
Fruit: types and characters: fleshy (berry, drupe, pome)
Google Image Search: Link
Dictionary of The Families & Genera of Chinese Seed Plants: Link
Vascular Plant Type Catalog at NYBG: Link
