Gymnosperms

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Gymnosperms
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Cycadophyta
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Cycads in South African park
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Female cycad ovulate scales
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Cycad male cones
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Cycad leafleaflets unfurling like fern fronds
(circinate vernation)
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Ginkgophyta
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Ginkgo biloba
What unusual feature (for gymnosperms) makes
Ginkgo such a good city tree?
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Swimming sperm
From Cycad From
Ginkgo
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Coniferophyta
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Pinus longaeva (bristlecone pine)
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Taxus brevifolia Pacific yew
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Gnetophyta
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Gnetum why does this gymnosperm, unlike most,
have vessels in its xylem?
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Welwitschia mirabilis
Female cones
Male cones
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Ephedra