1	"Ovaries and fruits shortly stipitate; plants cultivated trees"	"Guaicum {Guaicum officinale}"
1	"Ovaries and fruits not or scarcely stipitate; plants growing wild, herbs or shrubs"	2
2	"Flowers in spikelike racemes or scorpioid cymes"	3
2	"Flowers solitary, in or near the leaf axils"	4
3	"Inflorescences scorpioid cymes; leaflets entire or with 3-fid tips; petals 5, concave, shortly hooded; stamens 10-15; fruits succulent berry-like drupes"	Nitrairia
3	"Inflorescences spikelike racemes; leaves incised; petals (3)4, shortly clawed, not noticeably concave, not hooded; stamens (3-)4; fruits dry capsules"	"Tetradiclis {Tetradiclis tenella}"
4	"Stipules spiny"	Fagonia
4	"Stipules not spiny"	5
5	"Leaves simple, alternate, multifid; stamens 10-15; fruits 4-lobed"	"Peganum {Peganum marmala}"
5	"Leaves usually compound, rarely simple, opposite; stamens 10 or fewer"	6
6	"Sepals 3, valvate; petals absent; stamens 5"	"Seetzenia {Seetzenia lanata}"
6	"Sepals 4-5, imbricate; petals 4-5; stamens (5-) 10"	7
7	"Plants prostrate herbs; leaves pinnately compound; stamens alternately long and short; fruits villous"	Tribulus
7	"Plants usual shrubs, rarely erect herbs; leaves usually palmately compound with 1-3 leaflets, rarely simple; stamens of qual length; fruits not villous"	Zygophyllum