1	"Leaves with yellow variegation"	"Agave americana `Marginata’ + Agave americana ‘Mediopicta’"
1	"Leaves unvariegated"	2
2	"Leaves frequently reflexed; margins undulate; capsules 4-5 cm long"	"Agave americana var. americana"
2	"Leaves straight; margins straight or crenate; capsules 4.5–6 cm long"	"Agave americana var. expansa"