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Hamamelidaceae R. Brown


Hamamelis sp.

Credit: Xiangying Wen

Habit: tree, shrub

Hairs: stellate, peltate or scale-like

Taxon group: dicots

Plant: monoecious

Leaf: position: opposite, alternate, distichous, spiral

Leaf: nature: simple

Leaf: venation: pinnate, palmate

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

Leaf: stipules: present

Flowers: inflorescence: raceme, spike, head, panicle, thyrse

Flowers: sexuality: bisexual, unisexual, polygamous

Flowers: symmetry: actinomorphic, zygomorphic

Flowers: sepal number/calyx lobes: 0, 4, 5

Flowers: sepal/calyx nature: imbricate

Flowers: petal number/corolla lobes: 0, 4, 5

Flower: bract: present

Flower: bractlet: present

Stamen: number: 4, 5, 10+

Stamen: anthers: basifixed, opening by longitudinal slits, opening by valves

Stamen: filaments: free

Pistil: style: styles more than 1

Pistil: carpel: 2

Pistil: ovary: 2-loculed

Pistil: ovule: 1 per locule

Pistil: pistil: carpels free from each other, ovules axillary placentation

Ovary: position: half-inferior, inferior

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

Fruit: seed: winged

Seed: embryo: straight

Seed: endosperm: seeds with endosperm

Google Image Search: Link

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

Vascular Plant Type Catalog at NYBG: Link


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