Sphagnum, cont' a moss, nonvascular plant

1
Sphagnum, cont. (a moss, nonvascular plant)
Microphyll1 to 2 cells thick
Gametophyte w/ sporophytes
Bog body Tollund man
Niche-creation 1 of earths land surface
2
Seedless vascular plants (ferns and fern allies)
Rhynia
3
Giant clubmoss Lepidodendron
Secondary growth ability now lost
4
Extant clubmosses (Lycopodium, etc.)
Wolfs foot?
Sporophyte dominant gametophyte subterranean
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Equisetum (horsetails, scouring rushes)
The oldest surviving plant genus
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Resurrection fern (not a fern Selaginella
lepidophylla)

• Desiccation tolerance involves
• Late embryogenesis abundant (LEA) hydrophilic
  proteins
• Sugars such as trehalose
• ROS scavenging enzymes

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Fiddlehead developing fern leaf Fern leaf
development circinate vernation
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Tasmanian tree fern
Tree-like, but with no secondary xylem
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Adders tongue fern
2n 1260
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CAM fern
A tropical epiphyte why so many species of
epiphyte? Why CAM?
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Invasive fern (aka walking fern)
Walking man
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Filmy fern permanent gametophyte
Clings to cave walls