1	"Woody plants (usually more than 1 m high)"	2
1	"Herbaceous plants (usually up to 0.5 m high)"	11
2	"Calyx tubes connate, at least in part; fruit a syncarp"	3
2	"Calyx tubes free; fruit a drupe or capsule"	4
3	"Ovary with 1 ovule per cell; corolla lobes valvate in bud"	"Morinda: Morinda citrifolia"
3	"Ovary with many ovules per cell; corolla lobes imbricate in bud"	"Nauclea:Nauclea orientalis"
4	"Ovary 1-celled, incompletely divided by 2 or more projecting placentas"	Gardenia
4	"Ovary at least 2-celled"	5
5	"Ovules at least 6 per chamber of ovary"	Tarenna
5	"Ovules l to 4 (to 5) per chamber"	6
6	"Stipules free"	7
6	"Stipules connate, at least at base"	10
7	"Corolla lobes contorted and/or imbricate (sometimes semi-valvate)"	"Timonius: Timonius timon"
7	"Corolla lobes valvate in bud"	8
8	"Flowers along ramal or axillary flower-bearing short shoots"	"Coprosma: Coprosma repens"
8	"Flowers along normal branchlets"	9
9	"Flowers terminal or terminal and axillary in upper leaf axils, usually united into terminal inflorescences; ovules attached at base of ovary"	"Psychotria: Psychotria nesophila"
9	"Flowers axillary, in bundles or cymes, rarely solitary; ovules attached at or near top of ovary"	Psydrax
10	"Ovules 2 per chamber"	"Scyphiphora: Scyphiphora hydrophylacea"
10	"Ovules 1 per chamber"	Pavetta
11	"Leaves appearing whorled"	12
11	"Leaves opposite"	13
12	"Flowers bright pink or purplish, sessile, in terminal involucrate heads; corolla lobes less than half length of tube; calyx conspicuous, 6-lobed"	"Sherardia: Sherardia arvensis"
12	"Flowers white or yellow (rarely tinged pink or reddish), in terminal or axillary cymes (sometimes reduced to a single flower), sometimes congested, but flowers pedicellate; corolla lobes c. equal to or longer than tube; calyx absent or if present then not lobed"	Galium
13	"Corolla rotate"	Synaptantha
13	"Corolla funnel-shaped"	14
14	"Flowers separate"	15
14	"Flowers joined together in a head"	21
15	"Fruit opening by circumscissile lid"	"Mitracarpus: Mitracarpus hirtus"
15	"Fruit indehiscent or opening by slit or valves not by circumscissile lid"	16
16	"Corolla 5- or 6-merous"	17
16	"Corolla 4-merous"	18
17	"Fruit separating into 3 parts; ovules 1 per chamber"	Richardia
17	"Fruit indehiscent; ovules 2 or more per chamber"	Dentella
18	"Prostrate herb"	Spermacoce
18	"Erect or ascending herb"	19
19	"Ovules numerous per chamber of ovary; fruit opening by a loculicidal slit at apex"	"Oldenlandia: Oldenlandia corymbosa var. corymbosa"
19	"Ovules 1 per chamber; fruit opening by 2 carpels separating"	20
20	"Inflorescences many-flowered, in terminal corymbiform or umbelliform clusters"	"Knoxia: Knoxia stricta"
20	"Inflorescences few-flowered, in axillary or terminal clusters, rarely solitary"	Spermacoce
21	"Flowers joined in 2- to 7-flowered head, several heads grouped together in a compound globular head"	Opercularia
21	"Flowers joined in 2- or 3-flowered head, 5 to 11 heads on umbellate stalks"	Pomax