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Hansen & Rahn | Family List

Annonaceae Jussieu

habit
woody plants

important diagnostics
spiny stems or leaves

hairs
stellate, stellate, peltate or scale-like

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

leaf: position
alternate

leaf: nature
not compound

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

margin
with entire margin

leaf: epidermis
epidermis of leaf papillose

leaf: glands/ligule
with pellucid or glandular dots or lines

leaf: stipules
absent

inflorescence
solitary, fascicle, compound, sympodial or monopodial

flower: sexuality
bisexual, unisexual

flower: symmetry
actinomorphic

flower: receptacle
small, enlarged, totally or partially free from the ovary, enlarged, conical or hemispherical

flower: disc
absent

flower: perianth number
5, 6, 7+

flower: perianth nature
perianth of calyx and corolla

flower: sepal number
2, 3, 4, 6+

flower: sepal position
all free from one another, connate

flower: sepal nature
sepals imbricate or contorted, sepals valvate

flower: petal number
3, 4, 5, 6, 7, 8, 9, 10, 11+

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

flower: petal nature
petals valvate

stamen: number
3, 4, 5, 6, 7, 8, 9, 10, 11+

stamen: anthers
basifixed, extrorse, opening by longitudinal slits, opening by apical pores

stamen: filaments
free from the corolla, not connate

stamen: other characters
anthers with a conspicuous appendage, staminodia present

pistil: gynophore
present

pistil: style
styles absent, stigmas sessile, styles more than 1, free, 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, 2 in each loculus, 3+ in each loculus

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

fruit: type
a capsule, a nut, fleshy

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

seed: aril
arillus or arill-like organs present

seed: embryo
straight, curved

seed: endosperm
seeds with endosperm, endosperm ruminate


 

Related Objects  

Flora of China  
  • Annonaceae (PDF)
  • PDF

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