Botany Lab Prep SEEDLESS VASCULAR PLANTS

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Botany Lab PrepSEEDLESS VASCULAR PLANTS

• BIO 201 - BOTANY

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Taxonomy

• Division Lycophyta club mossesLycopodium and
  Selaginella microphylls one sporangium per
  sporophyll
• Division Sphenophyta horsetails microphylls
  (not photosynthetic) sporangia clustered into
  strobili
• Division Polypodiophyta fernsaka
  Pteridophyta megaphylls many sporangia per
  sporophyll

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Lycophyta - Lycopodium

• True vascular tissue (root, stem, leaf)
• Leaves as microphylls

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Lycopodium

• All microphylls alike
• Spores on microphylls or strobili

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Lycophyta - Selaginella

• Anisphyllous microphylls
• Stobili present

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Lycophyta slide materail

• Rhizome x.s.
• Lycopodium strobilus l.s.

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• Sporophyll(whole thing)
• Sporangium(rounded object)
• Spores(small, red)

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Sphenophyta - horsetails

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Polypodiophyta - ferns
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• Fern fronds
• Fiddlehead

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• Fern frond with sprangia

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• Sorus types
• Naked
• Marginal
• Umbrella

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