EYE - CATCHING SILK OAK TREE (GREVILLEA ROBUSTA) - INFORMATION AND USES

BAHEKAR, BEKKA, SHAHBLOOT, SILKY OAK, SOUTHERN SILKY OAK, GREVILLEA ROBUSTA

Grevillea robusta is a member of the Proteaceae family and as its name suggests is a hardy member of that genus, which is why it is used as rootstock for the less hardy types of grevillea. It has many names in many languages; the ones given above are its Urdu names. In English it is also known as River oak, Silk oak, Silver oak and Southern Silky oak. It gets the oak name because the wood from it looks like oak wood. It also has Latin synonyms: - Grevillea umbratica and Grevillea pectinata. It was names by Allan Cunningham after Charles F. Greville (1749-1809) who was one of the founders of the Royal Horticultural Society, London; because of its hardiness it got the Latin name robusta (robust).

  In Uganda and East Africa generally, as well as in Brazil, India and Hawaii, it is used for shade in coffee plantations, and for the same purposes in tea plantations in India and Sri Lanka as it protects not only the coffee and tea plants but also the workers. It can grow to heights of between 25 and 40 metres and is very beautiful when in flower. The flowers look like huge furry orange-gold caterpillars crawling across the branches. They are full of nectar and the Aborigines in Australia to which it is native, drink it straight from the flowers, or make a drink from them. The flowers are said to be very rich in vitamin C, and attract honeybees. Because it sheds its leaves and flowers, a thick layer of leaf mulch can build up in the soil around the tree, and as this may go to a depth of 30-40 centimetres, it protects the soil and maintains its temperature. The leaves and twigs ar said to be rich in aluminium.

  I came across this species of tree in Rawalpindi and it was clearly an old tree that had been planted many years ago. Bees are attracted to the flowers, but the flowers, fruit and seeds of the tree can cause skin irritation because of the cyanogenic compounds found in them; the leaves can also irritate the skin. Despite this, in Kenya the natives of the Kakamega Forest use the tree for medicinal purposes, which is a little unusual given that it is a non-native species. They use it to cure sore throats, earache, chest problems, flu and toothache, and there are also superstitions regarding it. However in Hawaii where it was also introduced it has come to be seen as invasive.

  The wood from Grevillea robusta is used in parts of the world for fuel as it makes good charcoal and firewood, as well as being used to make furniture. It is thought that the gum which exudes from the tree when it is cut could be used for industrial purposes. Yellow and green dyes can be made from the leaves, and the flowers are used for their fragrance.

   Some research has already been done on this tree and its properties but there is a lot more to be done before scientists can determine what it can be used for in terms of medicine. So far they have isolated his-resorcinols from it, striatol being the most potent, which may be a potential help for the cardiovascular system. The tree also contains grevillol a phenolic which resembles uroshiols the skin irritant in poison ivy. It also contains 5 alkylresorcinol glycosides, names Grevillosides G and H which are also being investigated. Who knows in what ways this tree can help us? Until we find out, I’ll continue to admire its beauty.

AMERICAN LOTUS - USES IN FOLK MEDICINE AND CUISINE

AMERICAN LOTUS, WATER CHINQUAPIN, NELUMBO LUTEA

There are only two species of lotus in the Nelumbonaceae family, one being the pink sacred lotus, Nelumbo nucifera which is native to Asia and the other the American lotus. It is native to the south-eastern part of the USA but can be found in many states now having been cultivated by the Native Americans. They planted the American lotus or chinquapin or yangupin as they migrated. Its tuber can be used as food, and baked like a potato, as it is starchy. It can be steamed too, and boiled, just like an ordinary potato tuber. The young leaves can also be eaten and cooked like spinach, as they can be boiled or steamed. The immature seeds of the seed pod can be eaten raw and the mature seeds can be roasted after being extracted from the pod and eaten, or you can grind them into flour and make bread with them. They can also be used to thicken soups. You should steep the root in water before cooking to remove the bitterness.

  The Native Americans believed that their lotus, like the pink Asian one was a sacred plant with mystical powers. The American lotus, unlike its Asian relative is yellow or white.

  An interesting phenomenon of the leaves of the American lotus is that they can’t get wet. Water forms a droplet and slides off the leaf. They can be used medicinally as the root can be pounded to a pulp and used as a poultice to relieve the pain of inflammatory diseases such as arthritis. It is thought that a decoction of the flowers and leaves can be used for ailments such as ringworm as it might have antifungal properties. There is not as much medical research so far into the properties of the American lotus as there has been into those of Nelumbo nucifera, which has been used in traditional medicines for centuries.

   The dried seed pods can be used as an attractive natural decoration. Its flowers are fragrant and bloom in late spring and then throughout the summer. The flowers can grow up to a foot in diameter, and the stems can sometimes be seen rising out of the water. It is classed as invasive in Connecticut where selling its seeds is prohibited. However it likes shallow water and can happily grow in garden ponds and shallow lakes. Be careful when handling it though as it can cause skin irritation and the plant has sharp edges, so it’s best to wear gloves if you are thinking of harvesting it.

  You may hear a lot more of the American Lotus as it is a candidate for commercial cultivation, for food and bio-fuel purposes.

GRAPEFRUIT - HISTORY, MEDICINAL USES, HEALTH BENEFITS: HOW TO MAKE GRAPEFRUIT MARGARITA

GRAPEFRUIT, CITRUS x PARADISI

The grapefruit’s history is tied to that of the Shaddock or pomelo and it was first referred to as “the forbidden fruit” of Barbados by Griffith Hughes in 1750. Later Patrick Browne reported it in much the same way as growing in Jamaica; writing of it as “the smaller shaddock” in 1814. In the same year, John Lunan described it in this way in his “Hortus Jamaicensis” (Plants of Jamaica) "a variety of shaddock, but the fruit is smaller, having thin, tough, smooth, pale yellow rind." It is thought that it got the name grapefruit because of the way it grows, hanging in clusters like grapes from the tree. It is believed that it was a natural cross between an orange and a pomelo.

  Grapefruits come in three colours, yellow or blond, pink and red, the colours describing the flesh and not the rind. The best in terms of medicinal value for prevention of prostate health for men is the red grapefruit which contains lycopene which has been hailed as a natural Viagra. It seems to help men who have erectile dysfunction as well as maintaining the health of the prostate gland. Lycopene is also found in watermelons, apricots, tomatoes, papaya and guava. For men any of these fruit eaten every day will be beneficial especially if they drink green tea too. Grapefruit of all descriptions contain a lot of vitamins C, E and A as well as B-complex ones and minerals such as calcium, copper, iron, magnesium, manganese, potassium, phosphorous, selenium and zinc. They also contain some Omega -3 and -6 fatty acids and 16 amino acids. They have potent antioxidant properties and are good to ward off and help cure colds and flu as well as having anti-inflammatory properties so good for osteoarthritis, rheumatoid arthritis and asthma. They are cardiovascular protective and protect against strokes and cancers too. Grapefruit also contains the phytonutrients, limonoids as do citrons and lemons which are believed to inhibit the growth of tumours. In vitro they have killed cancer cells of the lungs, colon, breast, prostate, skin, stomach and mouth. The pulp of citrus fruit including grapefruits contains glucarates, compounds which may help to prevent breast cancer. The bioflavonoid naringen in grapefruit repairs damaged DNA in human prostate cancer cells, so men really should add grapefruit to their diets.

  In Pakistan and India the pulp is believed to prevent and cure dysentery, diarrhoea enteritis, typhus and other digestive tract disorders, and a glass of equal parts of lemon juice and grapefruit juice banishes fatigue after a day’s work. Grapefruit juice is also an effective diuretic, and may also help eczema sufferers when it is drunk. Grapefruit also lowers cholesterol levels.

  Grapefruit stimulate the appetite so are good for appetizers; try segments of grapefruit on a bed of Cos/Romaine lettuce with prawns and avocados and a simple lemon dressing.

  If you like Margaritas try this one with grapefruit instead of lemon juice.

GRAPEFRUIT MARGARITA

Ingredients

grapefruit segments cut into quarters

salt

¾ cup of grapefruit juice

6 oz tequila

2 oz Cointreau or Triple Sec

2 cups cracked ice

Method

Rub the cut grapefruit segments around the rim of cocktail glasses then swirl them in a mound of salt to coat the rims.

Blend the liquids until smooth.

Pour into cocktail glasses and garnish with a grapefruit quarter on each rim.

This has Taste and is a Treat.

MONKEY POD TREE OR RAIN TREE - HISTORY, USES AND INFORMATION

MONKEY POD TREE, RAIN TREE, ALBIZIA SAMAN

The Monkey Pod tree is very distinctive with its huge canopy which can grow if unobstructed to 200 feet. It can reach heights of 100 feet, so is an impressive tree. In Venezuela it is said that Simón Bolívar (1783-1830) once camped his whole army under a Monkey Pod tree near Maracay. This tree is native to Central and South America but has spread to some Caribbean Islands where it has become naturalized as it is believed to have been taken these in the 16^th century. It is also naturalized in Hawaii where it was grown from a seed in 1847 and it is thought that this original plant is the ancestor of all Monkey pod trees on the islands. It can also be seen in parts of Florida. It was introduced to Fiji and Vanuatu, but is regarded as an invasive pest there. It also grows in Thailand where it is host to the lac insect from which we get shellac. In the Philippines it is known as mimosa because it is in the Mimosoideae family, while it is known as saman in Latin America from the alternative Latin name for this tree, Samanea saman. The flowers look like pink and white powder puffs.

  It is related to Albizia lebbeck which grows in Asia, and is a member of the Fabaceae or Mimosaceae family so is related to other pod bearing trees such as carob and the neem tree. The long pods (4 – 8 inches long) contain a sweet sticky pulp and seeds, all of which have a liquorice flavour. It is known as the liquorice tree in parts of the Caribbean. However it is not advisable to eat more than one pod because of their astringency.

  The Monkey Pod tree is called this perhaps because monkeys are fond of the pods and sit in the trees eating them. The tree’s name in Greek, Pithecellobium means “monkey earring” and is one of the tree’s botanical names. It is called the Rain tree perhaps for several reasons; one might be that any grass or vegetation under the tree is lush and green even in times of drought. This is because the tree has nyctinastic leaf movements like Choi-Moi or the Tickle Me plant; its leaves close and curl up at night so that any rain that falls hits the ground more easily than it would under a tree with ordinary leaves. The pods and flowers are nitrogen rich and when they fall and decay, the nitrogen goes into the soil. Plants need this to make chlorophyll which gives them their green colour, so perhaps this is why there is lush vegetation under the Rain tree. Farmers like the trees because they are nitrogen fixers and they also grow quickly, the durable, hard wood is sustainable and eco-friendly so can be used for furniture and hand-carved bowls and decorative pieces. In Thailand the tree is host to the lac insect from which we get shellac.

  The seeds and pods can be fed to animals and the contents of the pods are made into a refreshing soft drink something like tamarind water in the West Indies. The seeds are washed to remove the sticky pulp, and dried then used to make jewellery such as necklaces and other decorative items.

  Modern medical research has shown that the Monkey Pod tree has antibacterial and anti-fungal activities and can fight Staphylococcus aureus, Candida albicans and E. coli infections. An alcohol extract of the leaves may inhibit Mycobacterium tuberculosis, but more research is needed.

  In the West Indies the leaves are chewed to relieve toothache, and a root decoction is used in hot baths in Venezuela for stomach cancer. An infusion of the leaves is given for constipation and in the Philippines a decoction of the inner bark and the fresh leaves is given for diarrhoea. A boiled bark poultice is used to cure constipation too.

It's my tree

  The flowers attract honey bees as well as birds, moths and other insects, and locals enjoy the honey produced from the nectar, but it is only consumed in the locality of the growing trees.

  It is another of Nature’s wonderful health-giving trees.