153,581 species and infraspecific names are in the database, 20,980 images, 59,369 bibliographic items, 411,009 distributional records.

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Pneumatocyst in brown algae (Phaeophyta), a gas-filled subspherical to ovoid floatational structure, often containing carbon monoxide, nitrogen, or oxygen; by contrast, small floats are usually called vesicles (based upon the Greek, pneuma (air) & kystis (bladder); cf. aerocyst, air vesicle, gas bladder, vesicles, pneumatic & pneumaticus)

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