Text-book of structural and physiological botany . Fig. 532.—Pheasants eye,^^<9«zV; I. longitudinal section through seed; II. longi-tudinal section through flower (magnified). as the various species of Helleborus and Aconitum, and Ranunculussceleratus ; and a large number are grown as ornamental plants. 416 Structural and Physiological Botany, [The remaining more important orders of the cohort are Magnoliacece{Magnolia, Liriodejtdron, Brimys, Illicium) ; Anonacece [Uvaria,Anona) ; MenispeDnacecz {Cissanipelos, Cocculus, Anamirta, Meni-. Fig. 533.—Monkshood, Aconitnm Napelhis-, I. part of pl
Text-book of structural and physiological botany . Fig. 532.—Pheasants eye,^^<9«zV; I. longitudinal section through seed; II. longi-tudinal section through flower (magnified). as the various species of Helleborus and Aconitum, and Ranunculussceleratus ; and a large number are grown as ornamental plants. 416 Structural and Physiological Botany, [The remaining more important orders of the cohort are Magnoliacece{Magnolia, Liriodejtdron, Brimys, Illicium) ; Anonacece [Uvaria,Anona) ; MenispeDnacecz {Cissanipelos, Cocculus, Anamirta, Meni-. Fig. 533.—Monkshood, Aconitnm Napelhis-, I. part of plant (natural size); diagram ; III. flower (magnified), the coloured calyx having been removed,showing the two petals a developed into nectaries, the remaining petals beingreduced to scales or altogether abortive. spo-mmn) ; BerberidecE (Berberis, Mahonia, Epimedium, Podophyllum) ;Nymphcsacec^ [Nuphar, Nympkcsa, Euryale^ Victoria, Caboniba, A^e-htmbium)^ 417 CHAPTER VII. THE CHANGES WHICH HAVE TAKEN PLACE IN THE VEGE-TATION OF THE GLOBE IN THE COURSE OF GEOLOGICALPERIODS. Geology, or the history of the formation of the earth, provesthat the distribution of land and water on the surface of theglobe has not always been the same as it is now j many dis-tricts which are now continents were at one time seas, andvice versa. The main agent in carrying away masses of landfrom one spot and reconstructing them in another, has beenwater, either slowly by gradual action, or suddenly by mightyconvulsions. Some idea may be conceived o
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