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Hansen & Rahn | Family List

Zannichelliaceae Dumortier

habit
herbaceous plants

important diagnostics
aquatic plants, leaves floating or submerged

distribution
African, Asian, Australian and Oceanian, European, North American, South American

leaf: position
opposite or verticillate, alternate, distichous

leaf: nature
not compound

leaf: venation
pinnate or hardly visible in leaves or leaflets., invisible or leaves 1-nerved, longitudinal in leaves or leaflets

margin
with entire margin, dentate

leaf: glands/ligule
with a ligule

leaf: stipules
absent

inflorescence
solitary, simple, sympodial

flower: sexuality
unisexual

flower: symmetry
actinomorphic, zygomorphic or irregular

flower: receptacle
small

flower: disc
absent

flower: perianth number
0, 3

flower: perianth nature
perianth of similar segments

flower: sepal number
0, 3

flower: sepal position
all free from one another, connate

flower: sepal nature
sepals imbricate or contorted, sepals valvate

flower: petal number
0

stamen: number
1, 2, 3

stamen: anthers
basifixed, introrse, extrorse, opening by longitudinal slits, 1-locular at anthesis

stamen: filaments
free from the corolla, not connate, connate into 1 tube or bundle

pistil: gynophore
present

pistil: style
style 1, or styles more or less connate

pistil: carpel
1, 2, 3, 4, 5, 6+

pistil: ovary
1-locular

pistil: ovule
1 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 apex of the ovary

fruit: type
fleshy

fruit: seed
1 seed

seed: embryo
curved

seed: endosperm
seeds without endosperm


 

Related Objects  

Flora of China  
  • Zannichelliaceae (PDF)
  • PDF

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