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Hansen & Rahn | Family List

Compositae Giseke

habit
woody plants, herbaceous plants

important diagnostics
milky juice present, spiny stems or leaves, tendrils present

hairs
glandular, stellate, stellate, 2-armed or T-shaped, non-glandular, branched, peltate or scale-like, vescicular or bladder-like

distribution
African, Asian, Australian and Oceanian, 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: glands/ligule
with pellucid or glandular dots or lines

leaf: stipules
absent

inflorescence
solitary, head

flower: sexuality
bisexual, unisexual

flower: symmetry
actinomorphic, zygomorphic or irregular

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

flower: disc
absent, present

flower: perianth number
3, 5, 7+

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

flower: sepal number
0, 1, 2, 3, 4, 5, 6+

flower: sepal position
all free from one another

flower: sepal nature
sepals imbricate or contorted, sepals valvate

flower: petal number
3, 4, 5

flower: petal position
petals connate

flower: petal nature
petals valvate

stamen: number
4, 5

stamen: anthers
basifixed, introrse, opening by longitudinal slits

stamen: filaments
inserted on the corolla, not connate

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

pistil: carpel
2

pistil: ovary
1-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, fleshy

fruit: seed
3+ seeds

seed: embryo
straight

seed: endosperm
seeds without endosperm


 

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