Plant-life, with 74 full-page illus., 24 being from photos, by the author and 50 in colour from drawings . Pig. —Sigillaiiia MAjnLLAais: Paet of , Leaf-scars; , cone-scars. Note vertical ribs. than the roots classed as Stigmaria, it seems impossibleto determine whether they belonged to SigillaricB orLepidodendra. Modern Equisetales, or Horsetails (p. 157), all em-braced in the genus Equisetum, are the living repre-sentatives, but few in number, yet by no means lackingin virility, of a great race of plants which were highlydeveloped and very numerous in Palaeozoic t
Plant-life, with 74 full-page illus., 24 being from photos, by the author and 50 in colour from drawings . Pig. —Sigillaiiia MAjnLLAais: Paet of , Leaf-scars; , cone-scars. Note vertical ribs. than the roots classed as Stigmaria, it seems impossibleto determine whether they belonged to SigillaricB orLepidodendra. Modern Equisetales, or Horsetails (p. 157), all em-braced in the genus Equisetum, are the living repre-sentatives, but few in number, yet by no means lackingin virility, of a great race of plants which were highlydeveloped and very numerous in Palaeozoic , in the history of the Equisetales we have anexample of a races degeneration—that is, if it be Plate COW-PAKSNIP (Heradeum Sphondylium), Order VMBELLIFER/E. CALAMITES 239 allowable to apply such a term to a group of plantswhich, is now less complex in structure and fructifica-tion, and has not anything like the stature of its extinctancestors. But, although the glory of the race hasdeparted, its existing remnants can evidently hold theirown, as the gardener who has to cope with the incursionsof Equisetum arvense has reason to know. We may sayof Equisetum limosum that it is breaking bounds. Itdoes not seem to be content that its kind should dwindle
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectbotany, bookyear1915
