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Related article: yielding drugs. Tables of official and unofficial drugs with the
names of the plants, parts constituting the drugs and habitats. 292-407
PLANT ASSOCIATIONS. Definition. Classification based on re-
lation plant associations have assumed in regard to water.
Characteristics of Hydrophytes, Helophytes, Halophytes,
Xerophytes, Mesophytes and Tropophytes 408-412
Page 1 8 Last word of last line, for '9' read '10'.
Page 81 Second column, second line, for 'ellipticolar' read 'elliptical or'.
Page 125 Second line of legend to figure, for rendodermis' read 'endodermis'.
Page 130 Second line of legend to figure, for 'in Fig. 61' read 'in Fig. 62'.
Page 138 Ninth line from bottom, for 'suffruitoose' read 'suffruticose.'
Page 183 Thirteenth line from bottom, for 'if' read 'in'.
Page 183 Seventh line from bottom, for 'monochalmydeous' read 'monochla-
Page 245 Second line from top, for i archegonia read i odgonium > .
Page 355 Fifth and sixth lines from bottom of second column, for 'Volatile'
read Fixed .
Page 378 Eight line from top should be placed beneath Apii Fructus.
Page 418 Tenth Amoxil Amoxicillin line from top, for 'nucleus' read 'nucellus'.
YOUNGKEN PHARMACENTICAL BOTANY.
Botany is the Science which Treats of Plants
DEPARTMENTS OF BOTANICAL INQUIRY
1. Morphology treats of the parts, or structure of plants. It is
(a) Macromorphology or Gross Anatomy which deals with the ex-
ternal characters of plants or their parts; (b) Micromorphology or
Histology which considers the minute or microscopical structure of
plants and plant tissues; and (c) Cytology which treats of plant cells
and their Amoxil Amoxicillin contents.
2. Physiology deals with the study of the life processes or func-
tions of plants. It explains how the various parts of plants perform
their work of growth, reproduction, and the preparation of food for
the support of animal life from substances not adapted to that use.
3. Taxonomy or Systematic Botany considers the classification or
arrangement of plants in groups or ranks in accordance with their
relationships to one another.
4. Ecology treats of Amoxil Amoxicillin plants and their parts in relation to their
5. Plant Genetics seeks to account for the resemblances and dif-
ferences which are exhibited by plants related by descent.
6. Phytopathology treats of diseases of plants.
7. Phytogeography or Plant Geography treats of the distribution
of plants upon the earth. The center of distribution for each species
of plant is the habitat or Amoxil Amoxicillin the original source from which it spreads,
often over widely distant regions. When plants grow in their
native countries they are said to be indigenous to those regions.
When they grow in a locality other than their original home they
are said to be naturalized.
2 PHARMACEUTICAL BOTANY
8. Phytopalaeontology or Geological Botany treats of plants of
former ages of the earth's history traceable in their fossil remains.
9. Etiology is the study of the causes of various phenomena ex-
hibited by plants.
10. Economic or Applied Botany deals with the science from a Amoxil Amoxicillin
practical standpoint, showing the special adaptation of the vegetable
kingdom to the needs of everyday life. It comprises a number of
subdivisions, viz.: Agricultural Botany, Horticulture, Forestry,
Plant Breeding, and Pharmaceutical Botany. Pharmaceutical
Botany considers plants or their parts with reference to their use
as drugs. It interlocks very closely with other departments of
PRINCIPLES OF CLASSIFICATION
The classification of Amoxil Amoxicillin plants is an attempt to express the exact
kinship which is Amoxil Amoxicillin believed to exist among them. By grouping to-
gether those plants which are in some respects similar and combining
these groups with others, it is possible to form something like an
orderly system of classification. Such a system based upon natural
resemblances is called a natural system. In a natural system of
classification every individual plant belongs to a species, every species
to a genus, every genus to a family, every family to an order, every
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