Amaryllis belladonna pink flowers which may be up to 10 cm in length, appear in the autumn before the leaves (hysteranthy) which are narrow and strap shaped. "Amaryllis belladonna" is one of the two species in the genus "Amaryllis" as currently circumscribed. "Belladonna" is a Latin epithet meaning beautiful lady. There are many common names around the world, for instance in the Azores, Portugal one name is "Meninas Para Escola" (girls going to school) referring to the flowers blooming when the girls in their pink uniforms are starting the new school year. In South Africa the plants are found growing among rocks.
Flowering plant seed plants and later angiosperms appears to be the result of two distinct rounds of whole genome duplication events. These occurred at and . Another possible whole genome duplication event at perhaps created the ancestral line that led to all modern flowering plants. That event was studied by sequencing the genome of an ancient flowering plant, "Amborella trichopoda", and directly addresses Darwin's ""abominable mystery"." The earliest known macrofossil confidently identified as an angiosperm, "Archaefructus liaoningensis", is dated to about 125 million years BP (the Cretaceous period), whereas pollen considered to be of angiosperm origin takes the fossil record back to