The Families of Flowering Plants L. Watson and M. J. Dallwitz Agavaceae Endl. Including Yuccaceae J.G. Agardh Excluding Doryanthaceae , Dracaenaceae , Phormiaceae Habit and leaf form . Normal' plants .
Plants succulent, or non-succulent.
Self supporting, or epiphytic . Leaves with a persistent basal meristem, and basipetal development. General anatomy . Plants without silica bodies. Accumulated starch other than exclusively 'pteridophyte type'.