Within each class the flower-characters as the essential feature of Angiosperms supply the clue to phylogeny, but the uncertainty regarding the construction of the primitive angiospermous flower gives.    From Wordnik.com.  [Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1] Reference

The number of cotyledons is so constant that they afford a character for the primary division of angiospermous plants.    From Wordnik.com.  [VERBATIM: The Language Quarterly Vol XIV No 3] Reference

But there were still angiospermous and orpine on my original list; and the night was, indeed, "opening like a cotyledon.".    From Wordnik.com.  [VERBATIM: The Language Quarterly Vol XIV No 3] Reference

It is a remarkable fact, as he justly observes, that the angiospermous exogens, which comprise four-fifths of living plants -- a division to which all our native.    From Wordnik.com.  [The Antiquity of Man] Reference

Its predominant life features are the culmination and the beginning of the decline of reptiles, amphibians, cephalopod mollusks, and cycads, and the advent of marsupial mammals, birds, teleost fishes, and angiospermous plants.    From Wordnik.com.  [The Elements of Geology] Reference

If, on the other hand, the endosperm is the product of an act of fertilization as definite as that giving rise to the embryo itself, we have to recognize that twin-plants are produced within the embryo-sac -- one, the embryo, which becomes the angiospermous plant, the other, the endosperm, a short-lived, undifferentiated nurse to assist in the nutrition of the former, even as the subsidiary embryos in a pluri-embryonic Gymnosperm may facilitate the nutrition of the dominant one.    From Wordnik.com.  [Encyclopaedia Britannica, 11th Edition, Volume 2, Part 1, Slice 1] Reference