Alexandrium tamarense

Alexandrium tamarense
Scientific classification
Kingdom: Chromalveolata
Superphylum: Alveolata
Phylum: Dinoflagellata
Class: Dinophyceae
Order: Gonyaulacales
Suborder: Gonyaulaceae
Genus: Alexandrium
Species: A. tamarense
Binomial name
A. tamarense

Alexandrium tamarense is a dinoflagellate known to produce saxitoxin, a neurotoxin which causes the human illness clinically known as paralytic shellfish poisoning (PSP). Multiple species of phytoplankton are known to produce saxitoxin, including at least 10 other species from the genus Alexandrium.