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Fortschritte der Chemie Organischer Naturstoffe / Progress in the Chemistry of Organic Natural Products / Progres dans la Chimie des Substances Organiques Naturelles (English, French, German, Paperback, Softcover reprint of the original 1st ed. 1950)
Loot Price: R1,697
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Fortschritte der Chemie Organischer Naturstoffe / Progress in the Chemistry of Organic Natural Products / Progres dans la Chimie des Substances Organiques Naturelles (English, French, German, Paperback, Softcover reprint of the original 1st ed. 1950)
Series: Fortschritte der Chemie Organischer Naturstoffe / Progress in the Chemistry of Organic Natural Products, 6
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In their monumental work "The Cactaceae", BRITTON and ROSE (I9)
record 1235 species belonging to the three tribes which constitute
the family of the Cacti. The actual number of the species must be
con- siderably higher. Cacti occur frequently in tlie more arid and
less accessible regions of the American Continent, nearly always
within very narrow and definite borderlines. The habitat of a
species is in many instances a single valley located in a remote,
uninhabited region of the Cordillera. Thus the collection of
flowering specimens fit for botanical identification is some- times
extremely difficult. On the other hand, cacti are apt to develop
individual variations in their characteristic morphological
features, rendering the definition of a species difficult and often
illusory. Specimens taken from their normal habitat to botanical
gardens or arboreta often die, degenerate or stop flowering. Taking
into account all these difficulties, it is not surprising to find
considerable differences of opinion among botanists on the taxonomy
of the cactaceae. A considerable number of species have not been
well defined and in many cases different names have been given to
the same species. The index of BRITTON and ROSE records not less
than 7000 binomials.
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