... Angiosperm derived characteristics. Flowers; The flowers of flowering plants are the most remarkable feature distinguishing them from other seed plants.
angiosperm. Flowering plant in which the seeds are enclosed within an ovary, which ripens into a fruit. Angiosperms are divided into monocotyledons (single seed leaf in the embryo ...
If you want to cite this site, "Stevens, P. F. (2001 onwards). Angiosperm Phylogeny Website. Version 9, June 2008 [and more or less continuously updated since]." will do. http ...