1	"Leaves opposite, but often reduced or absent, subtending rigid spines"	Discaria
1	"Leaves alternate (if ever subopposite then spines absent)"	2
2	"Lower surface of leaves glabrous or almost so beneath, clearly visible; flowers unisexual; fruit a fleshy drupe"	"Rhamnus {Rhamnus alaternus}"
2	"Leaves densely simple- and/or stellate-pubescent at least below, or lower surface obscured by revolute margin; flowers bisexual; fruit a dry schizocarp"	3
3	"Flowers without a tube (i.e. sepals divided to point of fusion with ovary), sepals spreading at anthesis; stamens not hooded by petals; inflorescences never surrounded by whitish floral leaves distinct from normal leaves; seeds mostly shed via a membranous 'window' on inner face of mericarps"	Pomaderris
3	"Flowers with a distinct tube (i.e. sepals not divided to point of fusion with ovary), but if tube very short, then sepals erect at anthesis; inflorescences sometimes surrounded by distinct whitish floral leaves"	4
4	"Disc hairy, narrowly surrounding ovary summit; inflorescences 1-(rarely 2-)flowered, each flower subtended by imbricate, spirally-arranged scarious bracts, and (usually) a leaf; inflorescences not surrounded by distinct floral leaves"	Cryptandra
4	"Disc glabrous, inflorescence several-flowered, often a head or head-like; individual flowers subtended by a 1 or 2 bracts or apparently ebracteate; inflorescences some- times surrounded by distinct floral leaves"	5
5	"Disc prominent, conspicuously indented adjacent to the stamens; tubular part of hypanthium very short; mericarps thin-walled, indehiscent; widespread"	Spyridium
5	"Disc obscure, lining the base of the tubular hypanthium (but tube very short in rare S. notiale), not indented adjacent to stamens; mericarps crustaceous, dehiscent by a vertical slit on the ventral face (sometimes extending to the upper dorsal surface); mallee areas only"	Stenanthemum