Cryptogamia (_Amphigens_). Algæ 4 Champignons 6 --- 6 (_Acrogens_). Ferns 250 Lycopodiaceæ (Club-mosses) 83 Equisetaceæ 13 --- 346 Dicotyledonous Gymnosperms. Asterophyllites 44 Sigillariæ 60 Nœggerathiæ 12 Cycadeæ? 3 Coniferæ 16 --- 135 _Dicotyledonous Angiosperms_ 0 _Monocotyledons?_ (very doubtful) 15 --- 502 --- Thus out of five hundred species, 352 are Cryptogamia; and with the exception of six, belong to the Acrogens.[186] [186] Bronn gives the annexed numerical summary of the fossil and recent species of plants:-- _Plants._--Cellular 188 Fossil. 9,100 Living. Vascular 1,867 60,303 ----- ------ 2,055 69,403 (80,000, Lindley.) ----- ------ In conclusion, I must direct attention to a remarkable character of the palæozoic and secondary floras, namely, the almost entire absence of the _Gramineæ_ or Grasses, which constitute so large a proportion of the existing vegetation.