1	"Sepals about equal in size, not petaloid; spiny shrub"	"Muraltia {Muraltia heisteria}"
1	"Inner (lateral) pair of sepals distinctly larger than others and petaloid; non-spiny herbs twiners or shrubs"	2
2	"Anterior petal lacking a crest; seeds with a distal tuft of hairs"	Comesperma
2	"Anterior petal crested; seeds glabrous"	Polygala