Alexander Semenov, Russland
Info
The "Laminariales" are an order of brown algae whose members form kelp forests underwater in the clear, shallow sea.
The thallus of this canopy-forming kelp is brown with a large branched holdfast (Haptera), a 25 cm long stalk, and a midrib leaf up to 25 m long and 1 m wide.
The midrib is 2-3 cm wide and has gas-filled chambers (fistulae) that hold the leaf up in the water column and allow the leaf to float on the sea surface.
The reproductive sporophylls develop on the upper part of the stem.
Habitat: This fast-growing annual occurs on rocks of the lower intertidal zone and forms nearshore kelp beds in cold, semi-protected to exposed habitats.
Other characteristics of this species include large, complex, conical petioles, broad, flattened shoots, and plant size.
Eualaria species are found in the intertidal zone or in shallow subtidal waters, often in a distinct band just above the Laminaria / Saccharina band.
Dragon kelp attaches itself to large rocks with its holdfast (a root-like structure) and rises to the surface.
Synonyms:
Alaria fistulosa Postels & Ruprecht, 1840
Alaria fistulosa f. platyphylla Setchell, 1901
Alaria fistulosa f. stenophylla Setchell, 1903
Phasganon fistulosum (Postels & Ruprecht) Ruprecht, 1850
The thallus of this canopy-forming kelp is brown with a large branched holdfast (Haptera), a 25 cm long stalk, and a midrib leaf up to 25 m long and 1 m wide.
The midrib is 2-3 cm wide and has gas-filled chambers (fistulae) that hold the leaf up in the water column and allow the leaf to float on the sea surface.
The reproductive sporophylls develop on the upper part of the stem.
Habitat: This fast-growing annual occurs on rocks of the lower intertidal zone and forms nearshore kelp beds in cold, semi-protected to exposed habitats.
Other characteristics of this species include large, complex, conical petioles, broad, flattened shoots, and plant size.
Eualaria species are found in the intertidal zone or in shallow subtidal waters, often in a distinct band just above the Laminaria / Saccharina band.
Dragon kelp attaches itself to large rocks with its holdfast (a root-like structure) and rises to the surface.
Synonyms:
Alaria fistulosa Postels & Ruprecht, 1840
Alaria fistulosa f. platyphylla Setchell, 1901
Alaria fistulosa f. stenophylla Setchell, 1903
Phasganon fistulosum (Postels & Ruprecht) Ruprecht, 1850
