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Hansen & Rahn | Family List

Circaeasteraceae Hutchinson

habit
herbaceous plants

distribution
Asian

leaf: position
alternate

leaf: nature
not compound

leaf: venation
pinnate or hardly visible in leaves or leaflets.

margin
dentate

leaf: stipules
absent

inflorescence
solitary

flower: sexuality
bisexual

flower: symmetry
actinomorphic

flower: receptacle
small

flower: disc
absent

flower: perianth number
2, 3

flower: perianth nature
perianth of similar segments

flower: sepal number
2, 3

flower: sepal position
all free from one another

flower: sepal nature
sepals valvate

flower: petal number
0

stamen: number
1, 2

stamen: symmetry
the same number as and opposite the petals or alternate with the sepals

stamen: anthers
basifixed, introrse, opening by longitudinal slits

stamen: filaments
free from the corolla, not connate

pistil: style
styles absent, stigmas sessile

pistil: carpel
1

pistil: ovary
1-locular

pistil: ovule
1 in each loculus

pistil
carpels free from each other or carpel 1, ovules attached to the apex of the ovary

fruit: type
a nut

fruit: seed
1 seed

seed: embryo
straight

seed: endosperm
seeds with endosperm


 

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