Polyneura bonnemaisoniae (C. Agardh) Maggs & Hommersand
Also known as
Polyneura hilliae (Greville) Kylin
Description: Thick, soft, deep crimson to rose
fronds, turning orange in fresh water. Fronds translucent,
flattened, fan-shaped, to 300 mm long (above, a large plant
collected in March). Stipe to 6 mm long, from flattened discoid
base. Blade simple to deeply cleft into wedge- or ribbon-shaped
segments, margin proliferous, undulate. Venation palmate, no
distinct midrib, veins anastomosing. Microscopic veins present
in younger parts.
Habitat: On rock at extreme low water,
occasionally on Laminaria hyperborea stipes, spring and
summer, widely distributed but commoner on southern and
south-western shores.
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