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vascular plants without seeds (The Megaphyll line (origin of Megaphylls…
vascular plants without seeds
concepts
interpolation hypothesis
dibiontic life cycle
monobiontic
transformation theory
The Microphyll line
extant genera
morphology
microphylls
division Lycophyta
large enations
heterospory
cones/strobili
extinct and extant
lycophytes sporangia
lepidostobuis
Early vascular plants
Rhyniophytes
Xylem structures of early vascular plants
seed plants
exarch protostele
protostele
endarch protostele
siphonostele
equal dichotomous branching
rhyniophytes
Zosterophyllophytes
Zosterophyllum
small herbs
without secondary ground
enations
outgrowths
increased photosynthetic surface area
3 features
sporangia were lateral
sporangia opened transversely on top
xylem was exarch protostele
The term vascular cryptograms
often ferns
fern allies
name indicates
they have vascular tissue
lack of features
fruits
seeds
flowers
The Megaphyll line
equisetophytes
monopodial growth
horsetails
monopodial growth
scouring rushes
sporangiophore
Trimerophytes
overtoping
pseudomonopodial branching
Monilophytes
ignophytes
euphyllophytes
monilophytes
origin of Megaphylls
euphyllophytes
telomes
megaphylls
telome theory
sporophyll
Ferns
psilotum ans tmesiptens
leaf gap
leptosporangiate ferns
leaf trace
eusporangia and Leptosporangia
uerosporangim
leptosporangia
