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A fern (Dryopteris decipiens) with simple (lobed or pinnatifid) blades, the dissection of each blade not quite reaching to the rachis.
A fern (Dryopteris decipiens) with simple (lobed or pinnatifid) blades, the dissection of each blade not quite reaching to the rachis.
A growing fern frond unfurling.
A growing fern frond unfurling.
Unfurling fiddlehead fern frond
Unfurling fiddlehead fern frond
Adaxial (left) and abaxial (right) surfaces of a pinnate fern frond (Blechnum appendiculatum). Sori are evident on the abaxial surface.
Adaxial (left) and abaxial (right) surfaces of a pinnate fern frond (Blechnum appendiculatum). Sori are evident on the abaxial surface.
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Leaf of Tilia tomentosa (Silver lime tree)
Leaf of Tilia tomentosa (Silver lime tree)
Vein skeleton of a leaf. Veins contain lignin that make them harder to degrade for microorganisms.
Vein skeleton of a leaf. Veins contain lignin that make them harder to degrade for microorganisms.
Near the ground these Eucalyptus saplings have juvenile dorsiventral foliage from the previous year, but this season their newly sprouting foliage is
Near the ground these Eucalyptus saplings have juvenile dorsiventral foliage from the previous year, but this season their newly sprouting foliage is isobilateral, like the mature foliage on the adult trees above
A leaf shed in autumn
A leaf shed in autumn