1	"Leaves with tubercules or spines on margins, ovate to lanceolate or ensiform; perianth segments united"	2
1	"Leaves without tubercules or spines on margins, linear; perianth segments free"	3
2	"Leaves with spines on margins, 12-50 cm long; inflorescences 0.4–1.5 m long"	Aloe
2	"Leaves tuberculate, 4–7 cm long; inflorescences to 0.3 m long (Haworthia coarctata)"	Haworthia
3	"Stamens equal; filaments densely hairy in upper half; pedicels not articulated; flowers yellow or orange, rarely white; native"	Bulbine
3	"Stamens unequal, outer 3 smaller than inner 3; filaments glabrous, expanded at base; pedicels articulated near the middle; flowers white or pink; naturalised (Asphodelus fistulosus)"	Asphodelus