botany lab prep seedless vascular plants bio 201 - botany
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Botany Lab Prep
SEEDLESS VASCULAR PLANTS
BIO 201 - BOTANY
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
Lycophyta - Lycopodium
• True vascular tissue (root, stem, leaf)
• Leaves as microphylls
Lycopodium
• All microphylls alike
• Spores on microphylls or strobili
Lycophyta - Selaginella
• Anisphyllous microphylls
• Stobili present
Lycophyta – slide materail
• Rhizome x.s.
• Lycopodium strobilus l.s.
• Sporophyll(whole thing)
• Sporangium(rounded object)
• Spores(small, red)
Sphenophyta - horsetails
•
Polypodiophyta - ferns
• Fern fronds
• Fiddlehead
• Fern frond with sprangia
Sorus types:• Naked• Marginal• Umbrella
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