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Ulmaceae Mirbel

榆科

Ulmaceae
Zelkow serrata

Credit: Xiangying Wen

Habit: tree, shrub

Taxon group: dicots

Plant: monoecious

Leaf: position: opposite, alternate, distichous

Leaf: nature: simple

Leaf: venation: pinnate, longitudinal, incl. 3-veined leaves

Leaf: blade: margin: entire, dentate, doubly serrate

Leaf: stipules: present

Flowers: inflorescence: solitary, fascicle

Flowers: sexuality: bisexual, unisexual, polygamous

Flowers: perianth number: 0, 4, 5, 6, 7, 8, 9+

Flowers: sepal number/calyx lobes: 3, 4, 5, 6, 7+

Flowers: sepal position: all free from one another, connate or basally connate

Stamen: arrangement: antepetalous, alternate or antesepalous, same number as petals or sepals, twice or more number as petals or sepals

Stamen: anthers: opening by longitudinal slits, 2-celled

Pistil: style: styles more than 1

Pistil: carpel: 2

Pistil: ovary: 1-loculed, 2-loculed

Pistil: ovule: 1 per locule

Ovary: position: superior

Fruit: types and characters: a nut (incl. achene, caryopsis, schizocarp, pyrene, etc.), fleshy (berry, drupe, pome), winged/samara

Seed: embryo: straight, curved

Seed: cotyledons: flat

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


 

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