The following are considered Kitniyot:
Rice
Millet
Soybeans
Peanuts
Corn
Sunflower Seeds
Buckwheat
Sesame Seeds
Poppy Seeds
Cardamom
Fenugreek
Rapeseed
Mustard
Peas
Beans
Lentils

The following are not considered Kitniyot:
Coriander
Anise
Cumin
Caraway
Fennel
Linseed
Cottonseed
Guar Gum
Locust Bean Gum
Carob

The following may be Kitniyot and are therefore not used:
Quinoa
Amaranth