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Hansen & Rahn | Family List

Geraniaceae A. L. Jussieu

habit
woody plants, herbaceous plants

important diagnostics
spiny stems or leaves

hairs
glandular

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

leaf: position
opposite or verticillate, alternate

leaf: nature
not compound, compound, pinnately compound

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

margin
with entire margin, lobed or divided, dentate

leaf: epidermis
epidermis of leaf papillose

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

leaf: stipules
present

inflorescence
solitary, umbel, simple, sympodial

flower: sexuality
bisexual

flower: symmetry
actinomorphic, zygomorphic or irregular

flower: receptacle
small

flower: disc
absent, present

flower: perianth number
5, 7+

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

flower: sepal number
4, 5

flower: sepal position
all free from one another, connate

flower: sepal nature
sepals imbricate or contorted, sepals valvate

flower: petal number
0, 4, 5

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

flower: petal nature
petals contorted

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

stamen: symmetry
flowers obdiplostemonous

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

stamen: filaments
free from the corolla, not connate, connate into 1 tube or bundle, connate into separate bundles

stamen: other characters
staminodia present

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

pistil: carpel
2, 3, 4, 5, 6+

pistil: ovary
3-locular, 4-locular, 5-locular

pistil: ovule
1 in each loculus, 2 in each loculus, 3+ in each loculus

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

fruit: type
a capsule, a nut

fruit: seed
3+ seeds

seed: embryo
straight, curved

seed: endosperm
seeds without endosperm, seeds with endosperm


 

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