The taxonomy of the plant family Liliaceae has had a complex history since its first description in the mid-eighteenth century. Originally, the Liliaceae were defined as having a "calix" of six equal-
Fritillaria ophioglossifolia, R Wettstein Handbuch der Systematischen Botanik 1901–1924
Lilium: Perigonium of six undifferentiated tepals, in two trimerous whorls and side-connected (dorsifixed) anthers
Calochortus nuttallii: Tepals in two clearly distinguished whorls of three sepals and three petals
The lily family, Liliaceae, consists of about 15 genera and 610 species of flowering plants within the order Liliales. They are monocotyledonous, perennial, herbaceous geophytes, often growing from bu
Erythronium revolutum flower with three stigmata and pseudo-basifixed anthers around the filament tip