Flowering plant magnoliid (2%) clades. The remaining 5 clades contain a little over 250 species in total; i.e. less than 0.1% of flowering plant diversity, divided among 9 families. The 43 most-diverse of 443 families of flowering plants by species, in their APG circumscriptions, are Of these, the Orchidaceae, Poaceae, Cyperaceae, Araceae, Bromeliaceae, Arecaceae, and Iridaceae are monocot families; Piperaceae, Lauraceae, and Annonaceae are magnoliid dicots; the rest of the families are eudicots. Double fertilization refers to a process in which two sperm cells fertilize cells in the ovule. This process begins when a pollen grain adheres to the stigma of the
Acanthus (plant) Acanthus (plant) Acanthus is a genus of about 30 species of flowering plants in the family Acanthaceae, native to tropical and warm temperate regions, with the highest species diversity in the Mediterranean Basin and Asia. This flowering plant is nectar producing and is susceptible to predation by butterflies, such as "Anartia fatima", and other nectar feeding organisms. Common names include Acanthus and Bear's breeches. The generic name derives from the Greek term ("akanthos") for "Acanthus mollis", a plant that was commonly imitated in Corinthian capitals. The genus comprises herbaceous perennial plants, rarely subshrubs, with spiny leaves and flower spikes bearing