BOTANY

Numerous programs covering the world of
botany from the microscopic algae to the
tallest redwood and oldest bristlecone.End-
less fascinating information for the scientist
& amature. GREATLY REDUCED PRICES!

TROPICAL PLANTS and FORESTS
Useful for botany students, potential tour- ists, and those from colder regions who never see colorful exotic tropical plants. 5 pgms, 100 slides & texts. 53% DISCOUNT!
EP #275X SLIDES
$99.95

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SAVE OVER $112.00 ON 5 SLIDE SET BUNDLE ORDER EP #275X.........$99.95
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THE TREE THAT WALKS IN THE SEA--THE RED MANGROVE Slides #253........$42.50

The history and life story of this unique, land-building tropical evergreen and the
many brackish water life forms that shelter and reproduce among its sturdy prop roots.
Pictures include trees, radical, roots, molluscs, algae, fish and birds. 20 slides, guide.

CONTENT SAMPLE: 20245 As the mangrove root system grows, it becomes more
tangled, extensive and almost impenetrable. It acts like a sieve and bits of driftwood, shell
fragments, seaweeds, grasses, dead organisms and leaves--practically anything that can be
carried by water--collects and gets trapped. At the same time, the trees, the roots and the
trapped debris provide food and dwelling places for various bacteria, fungi and algae. Spring and
summer rains falling upstate and storms from the Caribbean move in silts, mud and organic
detritus that gets trapped as well, so that there is a gradual build-up of nutrient rich soils and
sediments, and land is built around the mangrove roots.
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TROPICAL PLANTS OF THE US Slides order #275 ...............$42.50

Unusual plants for which the Southern U.S., particularly lower Florida, marks the
northernmost part of their range. Characteristics unique to the individual plants are
described. Includes bamboo, Brazilian pepper, tripsacum, sweet acacia, saw palmetto,
coral bean, airplants, varnishleaf, lantana, velvetseed, tetrazygia, Bougainvillea, coffee,
orchid and coontie. 2O slides and guide.

CONTENT SAMPLE: 11576 Another member of the legume family is coral bean.
This shrub (occasionally a small tree) bears tubular red flowers, followed by bright red seeds in
elongated green pods. It has an attractive three-part leaf and substantial spines on its branchlets.
In the past the seeds have been used to make jewelry in the Florida and the Gulf Coast areas
where it grows. This industry has all but stopped, however, for the seeds are poisonous if eaten.
Many cases have been recorded where women or children chewing on their beads or jewelry have
been sickened from the seeds.
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TROPICAL TREES OF THE US Slides order #257 ...............$42.50

Trees typically thought of as native to the tropics, but which have also estab-
lished a foothold in the southern U.S. due to natural or artificial means. For the most
part, these trees are unfamiliar to students in northern latitudes. Characteristic features,
origin and uses of each are described. Includes royal palm, cabbage palm, royal
poinciana, manchineel, pond apple, gumbo limbo, cypress. Geiger, sea grape,
mangroves, buttonwood, mahogany, strangler fig. 2O slides and guide.

CONTENT SAMPLE: 8663 This innocuous looking tree resembles many other
shrubs and trees of Florida. Except this is a most notorious tree, bearing the title "tree of death."
This is manchineel, from the Spanish word manzanilla, meaning "little apple." It is most
commonly found near the coast or along the Florida Keys; a tree that can tolerate some salt in its
soil. The story is that when Spanish explorers ate some of the pleasant looking little apples from
these trees they died hideous, violent deaths. A drop of the tree’s sap is reputed to raise instant
blisters on one’s skin and dew or rain water dripping from the tree is said to carry enough poison
to give one an unpleasant, all-over rash like poison ivy. However, manchineel is planted as a
common shade tree in the Virgin Islands, which makes one wonder just how poisonous it really is!

Manchineel reaches a height of about 20 feet. In the same family of plants are tapioca,
Brazilian rubber tree, Proton, poinsettia, and castor bean.
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PALMS Slides order #256 ...............$42.50

Palms are almost synonymous with the tropics. Next to grasses, palms are the
most important and useful plants in the world, providing foods, oils and fibers used by
hundreds of millions of people worldwide. Familiar, exotic and rare palms, their unique
characteristics and economic significance are presented. Includes coconut, dwarf
coconut, sugar, silver, pickabeen, rakii, triangle, Washingtonia, Cuban petticoat, Chinese
fan, blue latan, fish-tail, butterfly, mascarene bottle, Jamaica thatch, Christmas, Puerto
Rican hat and date palms. 2O slides and guide.

CONTENT SAMPLE: 7027 This young tree is a pickabeen palm, native to
Australia. Eventually it may be 60 or 70 feet tall. It is considered hardy and planted as an
ornamental, partly because of its lilac colored flowers and red fruits.

This little tree illustrates a feature of palms that is confusing to some people. The green
area above the gray concrete-like trunk and below the fronds is not actually part of the trunk. This
is what is called the crown shaft and it is formed by the long bases of the palm fronds. Thus as
the palm grows and fronds turn brown and die, when each frond falls off, it takes all or most of its
leaf base with it, exposing a younger, greener frond base underneath. This is what also produces
those rings around the trunk at different heights. Each leaf base leaves a ring when it peels off.
The area between rings shows the amount of growth that takes place between the falling off of
successive leaves. Sometimes they are wide, sometimes narrow.
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THE TROPICAL RAIN FOREST Order #249...........$42.50

Rain forests are the climax vegetation in areas where a warm and equable
climate and abundant rainfall provide ideal conditions for plant growth. This set details
the stratification of the rain forest, the unique characteristics and adaptations of its life
forms, and representative plant and animal life of this biome. 20 slides and guide.

CONTENTS SAMPLE: 21698 The relatively shallow root systems of the trees are
apparently associated with excessive moisture that prevents aeration of the soil to any great
depth. The tendency of the trees to form above-ground supporting structures seems very logical,
considering the soil conditions and the shallow root systems. Both stilt roots and plank
buttresses, which are common, result from extra secondary growth on the top of the largest
lateral roots. They may radiate out from the tree as much as 10 m (30 ft.). Note how the
buttresses dwarf the people in the photo. Several of these highly developed lateral roots provide
support around the enormous trunk, which does not have the massive tap root so often found in
large trees of temperate forests.

REVIEWS: "A good introduction to the ecology of a Panamanian tropical rain forest..."
Previews.

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RELATED PROGRAMS WORTH NOTING
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TROPICAL RAIN FORESTS UNDER FIRE Video order #FV-1132V..........$59.95

by World Wildlife Fund and Garden Club of America

Details what we are losing as tropical rain forests are destroyed. These
mutilayered biological treasure houses are the source of some of our most widely used
and useful products--rubber, cocoa, quinine, curare--and wintering ground for many of our
favorite migratory birds. Yet tropical rain forests are being decimated, the web of
biological diversity is being sundered, and species are being lost before we are even able
to discover them. 116 frames, 32 page guide with many teaching resources. Video or
filmstrip. (Filmstrip order FS-1132F.....$49.95.)

CONTENT SAMPLE:

53. The superficial riches of the tropical rain forest have been discovered and
exploited,

54. but scientists estimate that only 15% of the plant and animal species in the rain
forest have been discovered.

55. What new medicines, new foods and new products could the rain forest yield?

56. But before we can understand what new products these unknown forests may
yield, we need to understand more about rain forest ecology.

REVIEWS:

Award for CREATIVE EXCELLENCE U.S. Industrial Film Festival

****RECOMMENDED FOR PURCHASE WITHOUT RESERVATION Media Review.

“...thoughtfully conceived and carefully constructed...handsomely illustrated with superb
color photography...will lead students into myriad relevant topics...” Media Review.

“...informative...realistic...factual, accurate, relevant, and very well organized.” Choice.

“...does an excellent job...” Recommended Science Books & Films.

“Fine script...materials are outstanding.” Library Journal.
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