River banksia (Banksia seminuda)
Description
The river banksia generally grows as a tree up to 25 metres (80 ft) tall with a usually brown to grey trunk covered with a hard grey furrowed bark. The tree trunk is often straight and tall as the species generally grows in sheltered forest areas. The leaves are arranged on the stems in whorls. Measuring 5–12 centimetres (2–4 3⁄4 in) long and 1–1.8 centimetres (1⁄2–3⁄4 in) across, they are linear in shape with serrated margins. The upper leaf surface is finely furred becoming smooth, while the undersruface is covered in white fur. Flowering occurs between late summer and late winter. The yellow (occasionally red) flower spikes grow up to 200 mm (8 in) high by 70 mm (3 in) wide, the fruiting cones can remain on the trees for many years after shedding the flowers early. Its leathery leaves are between 70 mm (3 in) and 120 mm (5 in) long with fine teeth, subspecies remanens leaves have few if any teeth except at the tips of the leaves.
Taxonomic tree
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Domain: Eukarya
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Kingdom: Plantae
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Phylum:
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Class: Magnoliopsida
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Order: Proteales
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Family: Proteaceae
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Genus: Banksia
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