1	"Fruits flattened, persistent, 1-seeded capsules"	Wellstedia
1	"Fruits drupes, nuts, or 2-4 nutlets"	2
2	"Plants prostrate annuals with crenate leaves; styles 2, very short"	"Coldenia {Coldenia procumbens}"
2	"Plants not prostrate annuals or, if so, not with crenate leaves; styles usually undivided, sometimes divided"	3
3	"Styles terminal on the ovaries"	4
3	"Styles gynobasic, inserted between the lobes of the distinctly 4-lobed ovaries"	9
4	"Styles twice 2-fid of 4-branched"	Cordia
4	"Styles once 2-fid or undivided"	5
5	"Styles 2-fid, each branch with a captitate stigma or practically unbranched with 2, more or less sessile capitate stigmas at the top"	6
5	"Styles unbranched, with a conical to disk-like stigmatic head at the top"	7
6	"Calyx lobes overlapping; stones with reticulate inner faces"	Ehretia
6	"Calyx lobes touching; stones with a conspicuously ridged or winged outer surfaces"	Bourreria
7	"Plants shrubs or small trees growing on sea shores; fruits with a spongy mesocarp"	"Argusia {Argusia argentea}"
7	"Plants usually herbs or subshrubs, rarely small shrubs; fruits without a spongy mesocarp"	8
8	"Fruits 4-seeded stones with a thinly fleshy mesocarp"	"Nogalia {Nogalia drepanophylla subsp. suaediformis}"
8	"Fruits splitting into 2 or 4 notlets at maturity or reduced to 1 nutlet by abortion"	Heliotropium
9	"Anthers with terminal linear and usually long exserted appendages"	10
9	"Anthers without terminal appendages, included to slightly exserted"	11
10	"Anther appendages not twisted; nutlets more or less warty"	Cycostemon
10	"Anther appendages twisted; notlets more or less spiny"	Trichodesma
11	"Corollas closed at the throat by appendages; nutlets more or less covered by glochidiate spines"	Cynoglossum
11	"Corollas glabrous or hairy at the throat, without appendages; nutlets smooth or tuberculate"	12
12	"Corollas glabrous at the throat, bright yellow"	"Arnebia {Arnebia hispidissima}"
12	"Corollas hairy at the throat, variusly colored but scarcely bright yellow"	Echiochilon