1	"Flowers actinomorphic"	2
1	"Flowers strongly zygomorphic"	7
2	"Plants subshrubby or shrubby"	Romneya
2	"Plants herbaceous"	3
3	"Sepals connate, calyptrate; hypanthium present"	"Eschscholzia {Eschscholzia californica}"
3	"Sepals distinct, not calyptrate; hypanthium absent"	4
4	"Stigmas radiating on a sessile disc"	Papaver
4	"Stigmatic disc absent"	5
5	"Leaves harshly prickly"	Argemone
5	"Leaves not harshly prickly"	6
6	"Herbage distinctly glaucous; petals yellow to reddish orange; filaments yellow"	Glaucium
6	"Herbage not distinctly glaucous; petals bright red or violet; filaments dark violet or black"	"Roemeria {Roemeria hybrida}"
7	"Inflorescence cymose; flowers with 2 pairs of similar petals, inner petals deeply trilobed, stamens 4; fruit narrow, linear to falcate, breaking transversely into one-seeded segments, or indehiscent; plant strongly curry-scented"	"Hypecoum {Hypecoum pendulum}"
7	"Inflorescence racemose; flowers with outer pair of petals differing from inner pair; inner petals entire, stamens 6; fruit a 1-several-seeded capsule, or 1-seeded, indehiscent and nut-like; plants not curry-scented"	8
8	"Fruit several-seeded; rhizomatous perennials with flowers usually more than 14 mm long"	"Pseudofumaria {Pseudofumaria alba subsp. alba}"
8	"Fruit 1-seeded; tap-rooted annuals; flowers (in Australian species) to 14 mm long"	9
9	"Raceme globular to ovoid; fruit flat"	"Platycapnos {Platycapnos spicatus subsp. spicatus}"
9	"Raceme elongate; fruit"	Fumaria