1	"Flower bilateral or biradial; petals 4, 1 or both outer spurred or pouched at base (Fumarioideae)"	2
1	"Flower radial; petals >= 4, not spurred or pouched at base (Papaveroideae)"	5
2	"Flower biradial; outer 2 petals alike, both pouched at base"	3
2	"Flower bilateral; outer 2 petals not alike, upper spurred at base"	4
3	"Plant without leafy stems"	Dicentra
3	"Plant with leafy stems"	Ehrendorferia
4	"Fruit a capsule, generally linear to oblong, several- to many-seeded"	Corydalis
4	"Fruit +- a nut, +- round, 1-seeded"	Fumaria
5	"Subshrub to small tree"	6
5	"Annual, biennial, perennial herb, occasionally woody at base"	7
6	"Petals 4(6), yellow, 2--3 cm; leaf entire or minutely toothed"	Dendromecon
6	"Petals 6, white, 4--10 cm; leaf deeply lobed"	Romneya
7	"Leaves entire to minutely toothed; petals generally 6"	8
7	"Leaves toothed to dissected; petals 4, 6, or more"	11
8	"Plant generally glabrous; stamens 4--15"	9
8	"Plant long-hairy; stamens > 12"	10
9	"Basal leaves sessile, linear, fleshy; petals persistent; capsule ovoid, 1.5--2.5 mm"	"Canbya {Canbya candida}"
9	"Basal leaves petioled, spoon-shaped, not fleshy; petals deciduous; capsule linear, to 50 mm"	Meconella
10	"Stigmas 3; fruit ovoid, opening by 3 valves, not breaking transversely into units"	"Hesperomecon {Hesperomecon linearis}"
10	"Stigmas >= 6; fruit ovoid to widely linear, breaking transversely into 1-seeded, indehiscent units"	"Platystemon {Platystemon californicus}"
11	"Plant spiny; leaves generally cauline"	Argemone
11	"Plant unarmed; leaves basal, cauline, or both"	12
12	"Hairs generally +- 5--15 mm, wavy; leaves generally basal --- ne DMoj"	"Arctomecon {Arctomecon merriamii}"
12	"Hairs 0 or to 3 mm, straight; leaves basal, cauline, or both"	13
13	"Ovary, fruit < 3 &times; longer than wide; carpels > 2; fruit opening by pores"	Papaver
13	"Ovary generally > 3 &times; (fruit > 4 &times;) longer than wide; carpels 2; fruit splitting into 2 valves"	14
14	"Leaf dissected into +- linear segments; sepals 2, fused into conical cap; receptacle cup-shaped around ovary base; stigma lobes 4--8, linear"	Eschscholzia
14	"Leaf deeply pinnate-lobed; sepals 2, free; receptacle not cup-shaped, not around ovary base; stigma lobes 2, not linear"	"Glaucium {Glaucium flavum}"