1	"Inflorescences axillary umbels shorter than or equalling the subtending leaf and with peducles up to 5 mm long"	"Commicarpus reniformis"
1	"Inflorescences longer than the subtending leaves and with peduncles more than 10 mm long"	2
2	"Flowers numerous, subsessile or almost so, crowded into a dense head at end of a long, stout peduncle"	"Commicarpus pedunculosus"
2	"Flowers and inflorescences not as above"	3
3	"Stems and leaves densely glandular-pubescent and very sticky"	4
3	"Stems and leaves glabrous or pubescent but not sticky"	5
4	"Flowers mostly in umbels, sometimes in 2 or 3 superposed whorls; perianth limbs 7.5-11 mm long, densely glandular in bud; anthocarps with prominent sessile glands all over"	"Commicarpus grandiflorus"
4	"Flowers mostely in 2-3 superposed whorls; perianth-limbs about 5 mm long, glabrous; anthocarps with a subapical whorl of 3 large, shortly stalked or subsessile, glands as well as with scattered smaller glands"	"Commicarpus stenocarpus"
5	"Perianth-limbs white, 7-11 mm long"	"Commicarpus plumbagineeus"
5	"Perianth-limbs usually pink, mauve, or purple, if white, much shorter than 7 mm"	6
6	"Flowers in umbels"	7
6	"Flowers in 2-3 superposed whorls"	10
7	"Leaves sinuate or lobed; pedicels 1-4(-5) mm long in fruit"	"Commicarpus sinuatus"
7	"Leaves entire or obscurely sinuate; pedicels 6-20 mm long in fruit"	8
8	"Perianth-limbs white or very pale pink, less than 3 mm long"	"Commicarpus parviflorus"
8	"Perianth-limbs bright pink or mauve 4-8.5 mm long"	9
9	"Perianth-limbs 4-6 mm long, hairy"	"Commicarpus mistus"
9	"Perianth-limbs about 8.5 mm long, glabrous"	"Commicarpus ramosissimus"
10	"Inflorescence whorls (1-)2-3(-4), crowded, distance between whorls shorter than to slightly longer than the pedicels; anthocarps with 1-3 whorls of sessile glands near the top"	"Commicarpus hiranensis"
10	"Inflorescences whorls (2-)3-4(-5) well separated, distance between whorls longer than pedicels; anthocarps with a whorl of stalked glands near the top"	11
11	"Pedicels at least 10 mm long; perianth-limbs 3.5-4 mm long; anthocarps 7-8 mm long"	"Commicarphus ambiguus"
11	"Pedicels 1-5 mm long; perianth limbs 2-3 mm long; anthocarps 5-6.5 mm long"	"Commicarpus helenae"