1	"Leaves odd-pinnate, with more than 3 leaflets"	2
1	"Leaves simple or with 1-3 leaflets"	4
2	"Flowers bisexual; petioleas and leaf rachises winged; fruits berries"	"Harrisonia {Harrisonia abyssinica}"
2	"Flowers and plants unisexual; petioles and leaf rachises not winged; fruits follicles or drupa"	3
3	"Stems and petioles usually armed with prickles; ovaries of 1-2 separate carpels, each with a lateral style; fruits follicles"	Zanthoxylum
3	"Plants unarme; ovaries 4-celled with a single terminal style; fruit drupes"	"Fagaropsis {Fagaropsis hildebrandtii}"
4	"Plants armed with axillary spines"	5
4	"Plants unarmed"	6
5	"Leaves with 3 leaflets"	"Citropsis {undescribed species}"
5	"Leaves with 1 leaflet, appearing simple"	Citrus
6	"Plants trees or shrubs, usually well over 1.5 m tall; flowers and plants unisexual; fruits drupes"	Vepris
6	"Plants herbs or slender shrubs shorter than 1.5 m; flowers bisexual; fruits lobed capsules"	7
7	"Sepals and petals 5; stamens 10; capsules 5-lobed"	Haplophyllum
7	"Sepals and petals 4: stamens 8; capsules 2-lobed"	Thamnosma