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Seed Plants II: Angiosperms (Magnoliophyta (C. E. Bessey (Ranalean Flower…
Seed Plants II: Angiosperms
Magnoliophyta
Angiospermophyta
257,000 species
C. E. Bessey
Ranalean Flower Hypothesis
magnolia thought to be relictual
Eudicots
Classification of Flowering Plants
2 distinct lines of evolution
monocot
1 cotyledon on each embryo
flowers in groups of 3
eudicot
2 cotyledon
reticulate venation in leaves
flowers in sets of 5
basal angiosperms
Monocots
Basal Angiosperms
nothing in common with gymnosperms or seed ferns
early angiosperms diverged into
several clades