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Hansen & Rahn | Family List

Aponogetonaceae J. Agardh

habit
woody plants, herbaceous plants

important diagnostics
aquatic plants, leaves floating or submerged

distribution
African, Asian, Australian and Oceanian

leaf: position
alternate

leaf: nature
not compound

leaf: venation
longitudinal in leaves or leaflets

margin
with entire margin

leaf: stipules
absent

inflorescence
spike, compound, sympodial or monopodial

flower: sexuality
bisexual, unisexual

flower: symmetry
actinomorphic, zygomorphic or irregular

flower: receptacle
small

flower: disc
absent

flower: perianth number
0, 1, 2, 3

flower: perianth nature
perianth of similar segments

flower: sepal number
0

flower: petal number
0, 1, 2, 3

flower: petal position
all free from one another, petals imbricate

stamen: number
6, 11+

stamen: anthers
basifixed, extrorse, opening by longitudinal slits

stamen: filaments
free from the corolla, not connate

pistil: style
styles absent, stigmas sessile, style 1, or styles more or less connate

pistil: carpel
3, 4, 5, 6+

pistil: ovary
1-locular

pistil: ovule
2 in each loculus, 3+ in each loculus

pistil
carpels free from each other or carpel 1, ovules attached to the central axis or ventrally in apocarpae, ovules attached to the base of the ovary

fruit: type
a capsule

fruit: seed
1 seed, 2 seeds, 3+ seeds

seed: embryo
straight

seed: endosperm
seeds without endosperm


 

Related Objects  

Flora of China  
  • Aponogetonaceae (PDF)
  • PDF

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