Perianth in 2 series, petaloid or not; ovary superior, syncarpous; seeds albuminous.

Order 83. Liliaceae. - Herbaceous plants, rarely evergreen undershrubs; flowers bisexual as a rule and regular; perianth petaloid, inferior, 6-partite; stamens6, hypogynous, or on the perianth; anthers introrse; ovary 3-celled, superior; ovules several in each cell; styles 1 or 3; fruit a capsule or berry.

Order 84. Juncaceae. - Herbaceous plants, with grass habit; leaves narrow, slender, flat or channelled; flowers bisexual; perianth 6-partite, segments membranous, sepaloid, glumaceous; stamens 6, on base of segments; anthers 2-celled; ovary 1-3-locular, ovules 3, or many; placentae axile, parietal, or basal; fruit a capsule, 3-valved.

Sub-Class II

Spadiciflorae (Nudifloroe)

Perianth rudimentary or wanting; ovary superior, syncarpous or I-carpellary; flowers unisexual, in spadix with or without spathe.

Order 85. Typhaceae. - Plants aquatic or marsh plants, herbaceous; leaves linear, rigid; sheathed below; flowers in spadix without spathe; plants monoecious; perianth of scales or hairs, or absent; stamens 3 or 6; filaments long; anthers wedgeshaped, basifixed; ovary 1-2-celled, superior; style persistent; ovule 1, pendulous; fruit a utricle or drupe.

Order 86. Araceae (Aroideoe). - Herbaceous plants; leaves net-veined, broad; flowers in spadix, with spathe; flowers 1-2-sexual; perianth 6-partite, hypogynous, scale-like, or none; stamens 6 or fewer; filaments short, or none; anthers extrorse; ovary superior, 1- or more celled; fruit a berry; seeds few or many.

Order 87. Lemnaceae. - Plants aquatic, floating, leafless, frondose, proliferous, small, cellular; flowers in hollow of frond; plants monoecious; flowers in spathe, 1-3; perianth none; stamens 1-2, distinct; ovary I-celled; style short; stigma simple; fruit not opening; carpel 1.