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The Chemotaxonomy of Chinese Species of the Genus Aconitum L. (Ranunculaceae)


On the basis  of biosynthsis, distribution of diterpenoid  alkaloids  as
well as morphological evolution of Chinese species L. (Ranunculaceae), chemotaxonomy
of the genus Aconitum is discussed:
     1,  Subgen. Lycoctonum, containing lycoctonine-type alkaloids and Subgen. Aconi-
tum containing aconitine-type alkaloids, were probably differetiated at the early stage
of evolution of the genus Aconitum and evolved respectively in their own ways.
     2,  In Subgen. Aconitum: (1) Ser. Bullatifolia, containing mainly atisine-, veat-
chine-type alkaloids, and amino, alcohol and ester base of aconitine-type, and distribu-
ted in Hengduan Mountain and Jingsha River valley, where is the centre of modern
differentiation of species of Aconitum, is probably a series from which Chinese species
of the genus Aconitum were derived; (2) Ser.  Inflata,  containing mainly aconitine,
mesaconitine and bypaconitine, is an advanced group; (3) Ser. Grsndituberosa, conta-
ining mainly aconitine and songorine, is related to Ser.  Bulatifolia; (4) Ser. stylosa
and Ser. volubilia, containing mainly yunaconitine and other anisyl ester alkaloids form
another advanced branch.
     3,  Ser. Tangutica and A. naviculare of Ser. Rotaundifolia, containing atisine and
lactone-type alkaloids may be a specialized group in high mountains and have occurred
at early stage of evolution of the genus Aconitum.
     4,  Subgen. Gymnaconitum, containing atisine-type alkaloids and amino alcohol of
aconitine type, may als be a specialized group in high mountains.
     5,  A. franchetii Finet. et Gagnep. mainly containing ester bases of aconitine-type
and closed to A. chasmanthum Stapf, is best placed into Ser. Ambigua.


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