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Chapter 22 Seed Plants 1: Seed Plants Without Flowers ("…
Chapter 22 Seed Plants 1: Seed Plants Without Flowers ("Gymnosperms")
Division Progymnospermophyta: Progynosperms
Archaeopteridales
heterpsporous
Evolution of Seeds
micropyle
pollen chamber
integument
Aneurophytales
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rhyniophytes
trimerophytes
Division Pteridospermophyta: Seed Ferns
Division Coniferophyta: Confiers
compound cones
cone bracts
simple cones
ovuliferous scale
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short shoots
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suspensor
long shoots
proembryo
Division Cycadeoidophyta: Cycads
confused with either ferns or young palm trees
Division Cycadeoidophyta: Cycadeoids
Megasporophylls
Megasporangium
Microsporophylls
Division Ginkgophyta: Maidenhair Tree
short shoots
gymnospermous
lacks vessels
Division Gnetophyta
anthophytes
