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Hansen & Rahn | Family List

Didiereaceae CDRAKE

habit
woody plants

important diagnostics
spiny stems or leaves

distribution
African

leaf: position
alternate

leaf: nature
not compound

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

margin
with entire margin

leaf: stipules
absent

inflorescence
simple, sympodial

flower: sexuality
unisexual

flower: symmetry
actinomorphic

flower: receptacle
small

flower: disc
present

flower: perianth number
6

flower: perianth nature
perianth of similar segments, perianth of calyx and corolla

flower: sepal number
0, 2

flower: sepal position
all free from one another

flower: sepal nature
sepals imbricate or contorted

flower: petal number
4, 6

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

stamen: number
8, 9, 10

stamen: anthers
dorsifixed or ventrifixed, introrse, opening by longitudinal slits

stamen: filaments
free from the corolla, not connate

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

pistil: carpel
3

pistil: ovary
3-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: aril
arillus or arill-like organs present

seed: cotyledons
folded or crumpled

seed: endosperm
seeds without endosperm


 

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