Cyathea affinis
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Cyathea affinis is a variable species of tree fern native to Fiji, Samoa, the Cook Islands, Austral Islands, Tahiti, and the Marquesas Islands. The trunk of this plant is erect and 2–6 metres tall. Fr
Cyathea affinis Sw.
Frond
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A frond is a large, divided leaf. In both common usage and botanical nomenclature, the leaves of ferns are referred to as fronds and some botanists restrict the term to this group. Other botanists all
Cyathea affinis
…the Cook Islands, Austral Islands, Tahiti, and the Marquesas Islands. The trunk of this plant is erect and 2–6 metres (6 ft 7 in – 19 ft 8 in) tall. Fronds are bipinnate and 2–3 metres (6 ft 7 in – 9 ft 10 in) in length. The rachis and stipe are pale to brown in colour, or flushed with red towards the…
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.
Unfurling fiddlehead fern frond
Adaxial (left) and abaxial (right) surfaces of a pinnate fern frond (Blechnum appendiculatum). Sori are evident on the abaxial surface.