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The brown algae include the largest and fastest growing of seaweeds. [6] Fronds of Macrocystis may grow as much as 50 cm (20 in) per day, and the stipes can grow 6 cm (2.4 in) in a single day. [13] Growth in most brown algae occurs at the tips of structures as a result of divisions in a single apical cell or in a row of such
This is a list of the orders, families and genera in the class Phaeophyceae — the brown algae. [1] Discosporangiophycidae. Discosporangiales. Choristocarpaceae
Turbinaria J.V. Lamouroux is a genus under family Sargassaceae, order Fucales, of the class Phaeophyceae (brown algae). Taxonomic classification is based on morphological characteristics including the shape of the leaves, vesicles, and receptacles, as well as the development of the axes. [4]
Padina and Newhousia are the only genera in the brown algae group that is calcareous. [ 1 ] Padina species are differentiated based on the cell layer number, sporangial sori arrangement relative to hair bands and hair band presence or lack of on the lower thallus surface.
The carbon storage system of brown algae is unusual, involving the accumulation of reserves of mannitol and the β-1,3-glucan laminarin rather than α-1,4-glucans such as starch or glycogen. [4] The mannitol pathway was probably most likely a speciation event in the brown algal lineage via a horizontal transfer event from actinobacteria , along ...
Dictyotaceae is large family of brown algae (class Phaeophyceae). [2] It is the only family in the monotypic order Dictyotales (from Greek diktyotos 'netlike'). [3] Members of this family generally prefer warmer waters than other brown algae and are prevalent in tropical and subtropical waters thanks to their many chemical defenses to ward off grazers.
This in fact has made classifying brown algae difficult. [17] Kelp often have similar morphological features to other species within its own area since the roughness of the wave disturbance regime, but can look fairly different from other members of its own species that are found in different wave disturbance regimes.
The initial targets of Cavalier-Smith's classification, the protozoa were classified as members of the animal kingdom, [12] and many algae were regarded as part of the plant kingdom. With growing awareness that the animals and plants embraced unrelated taxa, the use of the two kingdom system was rejected by specialists.