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Hansen & Rahn | Family List

Aristolochiaceae Jussieu

habit
woody plants, herbaceous plants

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

leaf: position
opposite or verticillate, alternate

leaf: nature
not compound

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

margin
with entire margin, lobed or divided

leaf: epidermis
epidermis of leaf papillose

leaf: stipules
absent, present

inflorescence
solitary, raceme, simple, sympodial

flower: sexuality
bisexual

flower: symmetry
actinomorphic

flower: receptacle
enlarged, completely united with the ovary, totally or partially covering it, enlarged, conical or hemispherical

flower: disc
absent

flower: perianth number
0, 1, 3, 4, 6

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

flower: sepal number
0, 1, 3

flower: sepal position
all free from one another, connate

flower: sepal nature
sepals imbricate or contorted, sepals valvate

flower: petal number
0, 1, 3

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

flower: petal nature
petals valvate

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

stamen: anthers
basifixed, extrorse, opening by longitudinal slits

stamen: filaments
free from the corolla, not connate

stamen: other characters
anthers with a conspicuous appendage

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

pistil: carpel
4, 5, 6+

pistil: ovary
1-locular, 4-locular, 5-locular, 6+ locules

pistil: ovule
3+ in each loculus

pistil
carpels free from each other or carpel 1, ovules axile, carpels connate, ovules attached to the central axis or ventrally in apocarpae

fruit: type
a capsule, a nut, fleshy

fruit: seed
3+ seeds

seed: embryo
straight

seed: endosperm
seeds with endosperm


 

Related Objects  

A Checklist for the South China Botanical Garden, Guangzhou, Guangdong Province, P. R. China  
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    Interactive Keys by Xiangying Wen  
  • Aristolochia californica (Xiangying Wen)
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  • Aristolochia grandiflora (Xiangying Wen)
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