1	"Herbaceous plants (usually up to 0.5 m high)"	2
1	"Woody plants (usually more than 1 m high)"	16
2	"Leaves appearing whorled"	3
2	"Leaves opposite"	5
3	"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}"
3	"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"	4
4	"Plants dioecious (but reduced organs of non-functional sex present in all flowers); corolla funnel-shaped, the tube distinct, mostly >0.5 mm long, and if not then style ± 0.8 mm long; inflorescences often terminal; fruit fleshy, 2-lobed, indehiscent"	Asperula
4	"Plants bisexual; corolla rotate, tube <0.5 mm long; inflorescences usually axillary; fruit dry, breaking into 2 mericarps"	Galium
5	"Fruit a drupe; prostrate creeping herb"	6
5	"Fruit a capsule"	7
6	"Corolla 4-merous"	"Nertera {Nertera granadensis}"
6	"Corolla 5 (to 7)-merous"	Geophila
7	"Corolla rotate"	Synaptantha
7	"Corolla funnel-shaped"	8
8	"Flowers joined together in a head"	9
8	"Flowers separate"	10
9	"Flowers joined in 2- or 3-flowered head, 5 to 11 heads on umbellate stalks"	Pomax
9	"Flowers joined in 2- to 7-flowered head, several heads grouped together in a compound globular head"	Opercularia
10	"Fruit opening by circumscissile lid"	"Mitracarpus {Mitracarpus hirtus}"
10	"Fruit indehiscent or opening by slit or valves not by circumscissile lid"	11
11	"Corolla 5- or 6-merous"	12
11	"Corolla 4-merous"	13
12	"Fruit separating into 3 parts; ovules 1 per chamber"	Richardia
12	"Fruit indehiscent; ovules 2 or more per chamber"	Dentella
13	"Prostrate herb"	Spermacoce
13	"Erect or ascending herb"	14
14	"Ovules numerous per chamber of ovary; fruit opening by a loculicidal slit at apex"	Oldenlandia
14	"Ovules 1 per chamber; fruit opening by 2 carpels separating"	15
15	"Inflorescences many-flowered, in terminal corymbiform or umbelliform clusters"	Knoxia
15	"Inflorescences few-flowered, in axillary or terminal clusters, rarely solitary"	Spermacoce
16	"Stem thickened at base, a complex system of internal chambers present, inhabited by ants; flowers in cup-shaped cavities of stem; epiphytes (myrmecophilous plants)"	17
16	"Stem not thickened at base, not inhabited by ants; flowers arranged in cymes, panicles, or heads, never in cup-shaped cavities of stem"	18
17	"Stems and tubers densely covered with large spines; leaves more or less crowded at top of stem; ovary 4- to 5- (to 6-) celled"	Myrmecodia
17	"Stems and tubers without spines; leaves scattered over whole stem; ovary 2-celled"	Hydnophytum
18	"Calyx tubes connate, at least in part; fruit a syncarp"	19
18	"Calyx tubes free; fruit a drupe or capsule"	20
19	"Ovary with 1 ovule per cell; corolla lobes valvate in bud"	Morinda
19	"Ovary with many ovules per cell; corolla lobes imbricate in bud"	"Nauclea {Nauclea orientalis}"
20	"Ovary 1-celled, incompletely divided by 2 or more projecting placentas"	Gardenia
20	"Ovary at least 2-celled"	21
21	"Ovules at least 6 per chamber of ovary"	22
21	"Ovules l to 4 (to 5) per chamber"	27
22	"Fruit dry"	23
22	"Fruit fleshy or leathery"	26
23	"Corolla imbricate in bud"	Wendlandia
23	"Corolla valvate in bud"	24
24	"Climbing shrub"	Uncaria
24	"Tree, erect shrub or undershrub"	25
25	"Undershrub; capsule much flattened"	"Ophiorrhiza {Ophiorrhiza australiana}"
25	"Tree or shrub; capsule more or less globular or ovoid"	Hedyotis
26	"Stipules connate; leaves opposite"	Tarenna
26	"Stipules free; leaves conferted at apex of brachyblast, or rarely seemingly whorled (may appear opposite if 1 leaf reduced)"	Randia
27	"Stipules connate, at least at base"	28
27	"Stipules free"	31
28	"Ovules 1 per chamber"	29
28	"Ovules 2 per chamber"	30
29	"Style greatly exserted from corolla tube, the exserted part much longer than corolla lobes"	Pavetta
29	"Style slightly exserted from corolla tube, the exserted part shorter than or as long as corolla lobes"	Ixora
30	"Corolla lobes valvate in bud; flowers arranged in umbels which are grouped in terminal corymb-like or panicle-like inflorescences; shrubs with climbing or scrambling branches"	Coelospermum
30	"Corolla lobes contorted in bud; flowers arranged in many-flowered cymes; erect shrub"	"Scyphiphora {Scyphiphora hydrophylacea}"
31	"Corolla lobes valvate in bud"	32
31	"Corolla lobes contorted and/or imbricate (sometimes semi-valvate in Timonius)"	35
32	"Ovary of 4 to 9 carpels"	Lasianthus
32	"Ovary of 2 carpels"	33
33	"Flowers along ramal or axillary flower-bearing short shoots"	Coprosma
33	"Flowers along normal branchlets"	34
34	"Flowers axillary, in bundles or cymes, rarely solitary; ovules attached at or near top of ovary"	Psydrax
34	"Flowers terminal or terminal and axillary in upper leaf axils, usually united into terminal inflorescences; ovules attached at base of ovary"	Psychotria
35	"Flowers arranged in umbels on slender axillary peduncles"	Hodgkinsonia
35	"Flowers solitary or arranged in cymes"	36
36	"Corolla lobes contorted in bud"	Coffea
36	"Corolla lobes imbricate to semi-valvate"	37
37	"Ovary 1-celled"	38
37	"Ovary 2-celled"	39
38	"Flowers bisexual; ovary 4- to 9-celled, not divided by false partitions"	"Guettarda {Guettarda speciosa}"
38	"Flowers unisexual; ovary of female flowers divided by longitudinal, transverse, or oblique false partitions to give 1 to several ovulate chambers"	Timonius
39	"Stipules deciduous; ovules 1 per cell, inserted near apex"	Antirhea
39	"Stipules long persistent; ovules 1 to 5 per cell, inserted below the middle"	Triflorensia