black sea red data book - Department of Biology

Cystoseira crinita (Desf. Bory, 1832)
Synonyms: Cystoseira bosphorica (Sauv.), 1912; Cystoseira crinita (Desf.) Duby/.
bosforica A.Zin.& Kalug
Common names: Rom: Cistoseira, Russ: Tsistozeira bosforskaya; Turk: Bagazici
yosunu.
Taxonomic description. The thallus is over 30-40 cm long and grows in the same
conditions as Cystoseira barbata. The stem is short or stretched along the whole
stem, almost 2 mm high; the main branches are 5-10 cm long, one mm thick; its
branches branch out alternatively. The surface of the stem and branches is smooth.
The branches are cylindrical with a large number of cryptostoma coming out on the
surface in shapes visible to the naked eye. The number of (air) bladders is small,
interspersed or superficial, one or two on small branches at a certain distance from
one another. These (air) bladders are large, 4-8 mm long and 3-4 mm thick,
ellipsoidal, sometimes with a lateral growth, or split such a pitch-fork. Cylindrical or
spare-shaded receptacles at the top of the branches, often with bladders and
sometimes with some small thorns on their surface, and without sterile shoots
on the top.
IUCN Status
World level:
Black Sea Regional level:
Order FUCALES
Family SARGASACEAE
Subregion level: EN, on the north-western and western shelves
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