1	"Outer receptacle rim 0.5--5 mm"	"Eschscholzia californica"
1	"Outer receptacle rim 0--0.3 mm"	2
2	"Leaves basal"	3
2	"Leaves basal and cauline"	4
3	"Flower bud generally nodding; leaf 3 × ternate-divided, segments many, short-linear, condensed at end of long petiole, so leaf broom-like; petals (10)12--25 mm; seed minutely pitted, tan to ashy-gray; D"	"Eschscholzia glyptosperma"
3	"Flower bud erect; leaf 2 × ternate-divided, segments fewer than many, long-linear, sparsely distributed along leaf, so leaf not broom-like; petals 7--12 mm; seed prominent-discontinuous-ridged, brown; SNF, GV"	"Eschscholzia lobbii"
4	"Receptacle tapered at base, but with parallel sides distally"	5
4	"Receptacle obconic"	7
5	"Peduncle = basal leaves; petals yellow, 3--15 mm"	"Eschscholzia rhombipetala"
5	"Peduncle 2 × basal leaves; petals orange or deep yellow, 15--40 mm"	6
6	"Bud generally erect, glabrous"	"Eschscholzia lemmonii subsp. kernensis"
6	"Bud nodding, generally hairy"	"Eschscholzia lemmonii subsp. lemmonii"
7	"Flower bud generally hairy, nodding; petiole generally hairy"	"Eschscholzia hypecoides"
7	"Flower bud glabrous, nodding or erect; petiole generally glabrous"	8
8	"Flower bud generally nodding; SNE, D"	9
8	"Flower bud generally erect; not SNE, D"	10
9	"Leaf segments widened to tip, short, tip generally obtuse, notched; leaves gray- or blue-green; seeds generally oblong to elliptic"	"Eschscholzia minutiflora"
9	"Leaf segments not widened to tip, short or not, tip acute, +- notched or not; leaves bright- or yellow-green; seeds generally round"	"Eschscholzia parishii"
10	"Flower bud long-pointed, tip generally > 1/4 bud; plant denser below than above; mainland"	"Eschscholzia caespitosa"
10	"Flower bud blunt or short-pointed, tip < 1/4 bud; plant denser above than below; ChI"	"Eschscholzia ramosa"