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Hansen & Rahn | Family List

Cyperaceae A. L. Jussieu

habit
woody plants, herbaceous plants

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
spike, umbel, head, compound, sympodial or monopodial

flower: sexuality
bisexual, unisexual

flower: symmetry
zygomorphic or irregular

flower: receptacle
small

flower: disc
absent, present

flower: perianth number
0, 1, 2, 3, 4, 5, 6, 7+

flower: perianth nature
perianth of similar segments

flower: sepal number
0, 1, 2, 3, 4, 5, 6+

flower: sepal position
all free from one another, connate

flower: sepal nature
sepals imbricate or contorted

flower: petal number
0

stamen: number
1, 2, 3, 6, 8, 11+

stamen: anthers
basifixed, introrse, extrorse, opening by longitudinal slits

stamen: filaments
free from the corolla, not connate

stamen: other characters
anthers with a conspicuous appendage

pistil: gynophore
present

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

pistil: carpel
2, 3

pistil: ovary
1-locular

pistil: ovule
1 in each loculus

pistil
ovules axile, carpels connate, ovules attached to the central axis or ventrally in apocarpae, ovules attached to the base of the ovary

fruit: type
a nut

fruit: seed
1 seed

seed: embryo
straight

seed: endosperm
seeds with endosperm


 

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