PTEROPHYTA

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PTEROPHYTA
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SPOROPHYTE

• 12,000 species
• ½ cm to 25 m tall

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FRONDS

• Fern leaf
• Compound leaf made of individual leaflets called
  pinnae

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FIDDLEHEAD

• New uncurling frond

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RHIZOME

• Fern stem, horizontal, underground
• Roots grow down from rhizome and fronds grow up

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SORUS

• Cluster of sporangia
• Located on underside of pinnae

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SPORANGIUM
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GAMETOPHYTE

• Heart-shaped prothallus
• 2-3 cells thick, 10mm across
• Limited amount of vascular tissue

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YOUNG SPOROPHYTE