It is very universal that it still relied upon to bring some clarity to
the business of species classification. Linnaeus system uses one latin name
to indicate the genus, another to indicate the specific epithet. Together,
the genus, epithet comprise the species. Many closely related species may
share the same genus, but within the same genus, each species must be unique.
Many individuals attempted to provide a more workable classification system.
Of major importance was John Ray (1627-1705) of England who in 1682 wrote
Methodus Plantarum which promoted the species as the ultimate taxonomic
unit, utilized for the first time the categories monocotyledons, dicotyledons.
From 1686-1704 Ray published his master work, Historia Plantarum, a three
volume work on over 18,000 species. Unlike Ray, Linnaeus set up his categories
genus, species solely on the basis floral parts: class was determined by
stamens, order by pistils.
Linnaeus also remains important because of his world-wide view of
botany. Many his students went on world explorations, brought Linnaeus specimens
that fed his thirst for learning about classifying. Linnaeus classified nearly
12,000 species, in 1753 Linnaeus published his monumental botanical work,
Species Plantarum. During the 1700s, naturalists on major collecting trips
to Africa, Asia, America returned to Europe with thousands of specimens. This
large influx of new species made systematizing process critical.
Humans have always needed to classify objects in the world around them.
It's the only means we have of acquiring, passing on knowledge. Recognizing,
describing species has always been especially important because of their
use for foods and medicines. In most of the world only a small proportion
of species have classified. The scientists also learned that natives and
other local people had already called a majority of these species in their
own languages. This is remarkable, since their purpose has been to use the
species in customary ways and to maintain traditional cultural knowledge.
Among Europeans, we can trace the beginnings of organized, written taxonomies
to ancient Greece, where the philosopher and naturalist Theophrastus, a
disciple of Aristotle classified species as herbs, shrubs, or trees as early
as 300 BC.
.For example:
Amur Maple - Acer ginnala - prairie, disturbed
Norway Maple - Acer platanoides - forest
Tree-of-Heaven - Ailanthus altissima - disturbed, forest
European (Black) Alder - Alnus glutinosa - wetland, forest
Russian Olive - Elaeagnus angustifoli - prairie
Autumn Olive - Elaeagnus umbellata - prairie, forest
White Mulberry - Morus alba - disturbed
Scotch Pine - Pinus sylvestris - prairie, disturbed
White Poplar - Populus alba - forest, prairie
Buckthorns:Common - Rhamnus cathartica - forest, prairie, disturbed
Glossy- Rhamnus frangula - forest, wetland
European Mountain Ash - Rhamnus frangula
Sorbus acuparia - forest
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