Common Name: Black Locust, Yellow Locust, Locust
Tree, Robinia, False Acacia - The name locust tree is attributed to the
religious sects that immigrated to North America in the 17th Century.
According to the Bible, John the Baptist ate locusts and wild honey (Matthew
3:4). The "locusts" are believed to have been pods of the Carob tree, a member
of the legume or pea family indigenous to the Middle East. Since the Locust tree
resembles the Carob tree, its name reflects the biblical reference. The Carob
tree is also called Saint John's Bread, and, ironically, Locust tree.
Scientific Name: Robinia pseudoacacia - The
genus is named for Jean Robin, the herbalist of the King Henri IV of France who
introduced the tree to the Jardin des Plantes in Paris. The species name
means "false acacia" which also reflects the similarity in the appearance with
the Acacia tree, also a member of the legume or pea family.
The
black locust is indigenous to the lower slopes of the Southern Appalachian
Mountains. It has hard, strong, handsome dark brown wood that is virtually
impervious to fungal decay. The longevity of locust wood is an article of faith
in the lore and legend of agrarian society; locust fence posts reportedly
lasting for over one hundred years and pioneer homes with locust corner posts
still standing. It was used in virtually any application calling for high
strength and durability, notably tool handles, dowels and pins to fasten the
planks to the ribs of wooden ships, hubs for wagon wheels, and gates. Due to its
resistance to decay, it was also used as an alternative to teakwood for ship
decking, paneling and floorboards. The aesthetic appearance of the wood led to
its use in furniture, notably tabletops and music cabinets. However, the quality
of Locust tree wood is dependent on a number of environmental conditions. When
grown in poor soils, the wood is harder and denser due the slower growth
relative to faster growing trees in fertile soils, which tend to be brittle.
Forest grown Locust trees produce straight, limbless trunks; those grown in the
open tend to be crooked and forked.
Since Black Locust is a legume, it has specialized bacteria living
in swellings called root nodules. These bacteria reduce free nitrogen from the
air to produce ammonia, which is "fixed" in the soil, and which can then be used
by other crops to improve their yield. The robust root structure rapidly spreads
from an original parent tree to produce groves of clones through the process of
root suckering. This led to its promotion by state and federal agencies as a
means of erosion control, particularly in areas of coal strip mine reclamation.
It is considered a threat to vegetation outside its native range due to its
aggressive, rapid growth. It is difficult to control because trying to eradicate
it by plowing or digging so as to damage the roots only serves to further
accelerate the growth.
Because of its many attributes, the Locust tree has been spread by
the conscious actions of good-intentioned arborists throughout the world. It
was one of the first New World trees to be exported to Europe, entering England
in the 1630's. Ebenezer Jessup proposed that ten thousand acres of Locust trees
be planted for the British Navy in 1791. In the early 1800's William Corbett,
the author of The English Gardener, promoted the Locust tree, predicting
that it would eventually replace all hardwoods in Britain. He established
nurseries that sold the trees at inflated prices. However, the zeal abated when
the resultant trees were found to be excessively brittle and forked, probably
due to the environmental factors of soil condition and tree density. The Locust
tree has been a great success as an introduced tree in Israel, China, the
Himalayas and New Zealand. In Korea, it is used as a biomass source in
fuel-wood plantations due to its rapid growth. A fifth of Hungary's forests are
planted with the Locust tree, predominantly a cultivar named "Shipmast Locust"
that originated in New York.
The
resistance of the Locust tree to decay is due to chemicals that it produces that
are toxic to some forms of life, particularly insects and fungi. Some testing
has been done to try to isolate these chemicals, for potential use as natural
wood preservatives. High concentrations of a flavenoid called robinetin and a
fungal growth inhibitor called taxifolin are thought to play a role. Ironically,
parts of the locust tree are consumed as food by both humans and animals. Honey
produced by bees from Locust tree nectar is considered among the finest in the
world; the Robinia or Acacia Honey from the Danube River basin is of worldwide
renown The seed pods are edible when cooked, and the flowers are used to make
fritters and are added as a flavoring to pancake batter.. Locust leaves are used
for animal fodder in the Himalayas and Bulgaria.
45 beehives lined up as organized as possible on the uneven slopes. |
45 beehives ... transported around. They were in this spot for slightly less than 2 weeks. |
The toxicity of the Locust
tree is also responsible for its historic use as a treatment for disease. The
Cherokee Indians chewed the root bark to induce vomiting and to ameliorate the
pain of a toothache. The flowers contain the glycoside robinin, which has been
shown experimentally to act as a diuretic. A tea made from the flowers was used
to treat everything from headache to nausea. Juice from the leaves purportedly
inhibited viruses.
Above info (pictures excluded) from The Hiker's Notebook.
The Hiker has other fantastically rich nature resources at The Hiker's Notebook.net.
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