1	"Sap watery "	2
1	"Sap milky-yellow or orange "	3
2	"Mostly annual herbs; leaves thin, finely dissected, divisions linear; flowers yellow, pink or orange; sepals fused to form a hood, soon shed "	Eschscholzia
2	"Woody, waxy blue perennial; leaves pinnate, leaflets and divisions not linear; flowers white; sepals forming a round bud, soon shed "	Romneya
3	"Stigma large, flat and disk-like (with a starfish-like appearance) "	Papaver
3	"Stigma not flat and disk-like"	4
4	"Petals absent; flowers small, white and numerous in clusters to 40 cm long "	Macleaya
4	"Petals present but soon shed; flowers not as above "	5
5	"Capsule shedding seed through short teeth at tip; stigmas 4 or more "	Meconopsis
5	"Capsule with valves; stigmas 2 "	6
6	"Flowers about 5 cm wide; capsule more than 14 cm long "	Glaucium
6	"Flowers less than 2.5 cm wide; capsule 2.5–5 cm long "	Chelidonium