Cryptophyta
General description:
Cells brown, blue, blue-green, red, red-brown, olive green, or yellow-brown due to accessory pigments in often 1 or 2 chloroplasts; unicellular (rarely colonial), often bean-shaped, frequently dorsiventrally flattened; two or more unequal subapical flagella arising in an anterior invagination; storage material starch or starch-like.