The Indian Frankincense Tree

Salai (Boswellia Serrata/सालय, सालई) is a moderate-sized deciduous tree with a light, spreading crown and somewhat drooping branches. The tree has high ornamental value. It is popular for avenue planting in India.

The Salai tree has beautiful flowers. But what is more attractive is its bark or that’s what makes the tree easily identifiable. The bark is very thin, greyish-green, ashy or reddish with a chlorophyll layer beneath the thin outer layer, which peels off in thin, papery flakes. It gives a unique and attractive appearance to the tree. Leaves are alternate, crowded towards the ends of the branches; and very variable in size. 

The tree yields a yellowish-green gum-oleoresin known as ‘salai guggal' from the bark. It is known to be a good substitute for imported Canada balsam. Medicinally, the salai guggal gum is used as a diaphoretic and astringent. It has potent analgesic and anti-inflammatory effects that can reduce the pain and inflammation of joints. Salai have been clinically studied for osteoarthritis and joint function. It is also tapped for resin which is used as incense, hence is also known as Indian Frankincense tree.

It has been recorded as a new lac host species. It is a suitable species for afforestation on poorer soils in areas of dry sandstone hills which have been denuded of vegetation. Under such circumstances, its ability to withstand the adverse effects of forest fires, its immunity to being browsed or lopped for fodder, and its power of resisting the effects of insolation & drought are great assets. 

Salai can be propagated fairly well from seeds. Mature seeds should be immersed in water before they are sown, to separate out the sterile pyrenes, which float on the surface. Usually seed germination takes a week or two. It also has the remarkable ability to sprout from large branch cuttings or root suckers.

The tree has the ability to thrive in the poorest and the shallowest soils where most of its associates remain stunted. It is characteristically found on the slopes & rocky ridges of hills, as well as on flat terrain, attaining a larger size on fertile soils. It is resistant to drought and resists fire better than other species in its zone of occurrence. It is also frost hardy and serves as a nurse tree for other species.

The Complete Elm!

Indian Elm (Holoptelea Integrifolia/वावळ, पापडी) is a large deciduous, fast-growing tree with good canopy. It is densely foliated tree. Though its tiny flowers are not conspicuous, the circular samara fruits give an attractive appearance to the tree; also making the tree easy to spot. It has wind-pollinated male and hermaphrodite flowers. The flowers are small, greenish-yellow to brownish & pubescent.

Indian Elm tree flowers in January-February months and it fruits from March to May. During this period, the tree attracts loads bees and butterflies. It is the larval host plant for the Chilades Pandava butterfly. The fruits of Indian Elm, just like figs, are largely eaten by Langurs. The leaves are used as animal fodder. It can be coppiced. The unripe fruits are edible. Fruits also serve as a good source of Essential oils. This Elm gives good quality charcoal. 

Though Indian Elm grows slowly in initial stages, once established, the species can be fast-growing. It propagates from seeds & cuttings. The papery fruits can be just sprinkled on soil and regular water-spraying helps in their germination. It is resistant to gaseous pollutants. The tree is known to purify air by trapping dust & particulate pollutants. 

The tree is mentioned in Charaka-Samhita, Sushruta-Samhita and other traditional systems. It pacifies vitilated kapha and is known to be useful in skin diseases, haemorrhoids, colic, flatulence & vomiting. Its leaves are also used for diabetes, leprosy & baldness. This herb is also mentioned for the treatment of localized swelling, nausea, indigestion, rheumatism, ringworm infectin, scabies, ulcers and acts as blood purifier. The tree has also been found to have some antibacterial properties. Name the disease and this elm have remedy for that! It is commonly called Chirabilva in Ayurveda. 

Indian Elm is also used in ecological forestry for its heat & drought tolerance and regenerative abilities. It’s a very hardy tree that survives well in the extreme climate. Its root system helps in erosion control of soil and dune stabilization. The leaves also provide useful mulch in good quantity. It’s crushed leaves & bark has a characteristic smell. This virtue makes the tree resistant to pest and these parts can also be used as a pest repellent.

The tree is harvested from the wild for local use as a medicine, food, and as a source of oil and wood. The attractively dense tree is commonly spotted on roadsides across the city and in gardens as well. 

The Grewias

The tree is known for a refreshing drink prepared from the fruits, commonly known as Phalsa Sherbet or squash, is considered a delicacy throughout the hot summer months in India. The Phalsa tree (Grewia Asiatica/फालसा) is a small-to-moderate sized deciduous tree.

Phalsa is a beautiful tree with small orange-yellow flowers, borne in densely crowded axillary cymes. The ripe fruits are eaten as a dessert. Their taste and flavor are very much liked. Due to fruits, the tree is often found pollarded to keep its branches low and within reach.

According to Ayurveda, different parts of this plant possess different pharmacological properties. Leaves have antimicrobial, anticancer, antiplatelet and antiemetic activities; fruit possess anticancer, antioxidant, radio-protective and anti-hyperglycemic properties; while stem bark possesses analgesic and anti-inflammatory activities. The fruits are a cooling tonic, astringent & aphrodisiac; they allay thirst & burning sensations, remove biliousness, cure inflammation, heart & blood disorders and fevers. The fruit is also good against throat trouble. The bark is used as a demulcent, febrifuge and treatment for diarrhea. It cures urinary troubles and relieves burning sensation. The root bark is employed in treating rheumatism. The leaves are applied on skin eruptions and they are known to have antibiotic action.

The tree improves the soil and also aids in reclamation of degraded land. It has been proved that the plantations of Phalsa increased organic Carbon, available Nitrogen, Phosphorus & Potassium in the soil and reduced Calcium Carbonate, pH & bulk density due to litter production greater than that of other fruit trees. It is propagated easily by seeds.

Phalsa can be grown on a wide range of soils, even those that are slightly alkaline, clay or sandy soils. But for fruit production, ideal is a rich alluvial soil. The tree grows in both tropical and subtropical climates but will tolerate other climates, except at high altitude; however, it does best in regions having distinct summer and winter seasons. It is very hardy, drought-tolerant species and capable of existing under severe conditions and is suitable for arid regions.

The fresh leaves are valued as fodder. The mucilaginous extract from the tree obtained after pounding in water is used to clarify sugarcane juice during the preparation of gur, the traditional brown sugar made in India. Ropes or cordage can also be obtained from the tree. Furthermore, there is no serious pest or disease of this species.

There is a similar close cousin of Phalsa from the same genus, the Dhaman (Grewia Tiliifolia/धामण, धामनी) is a moderate-sized deciduous tree.

The yellow flower resembles the Phalsa flower very much. The main difference is in the leaves. The leaves of Dhaman are oblique heart-shaped.

The tree is harvested from the wild for local use of its fibre and edible fruit. The black, globose, 2-3 lobed fruit is about the size of a pea, having a nice flavor. Fruit is a good source of micronutrients such as anthocyanins, phenols, flavonoids and vitamin C. They have a moderate antioxidant activity and make an excellent, healthful addition to the diet.

Dhaman grows rapidly in full sun and light shade. It is successful in a range of well-drained soils. It also serves as a larval host plant for the Coladenia Indrani species of butterflies. It is also propagated by seeds.

The tree has numerous medicinal properties. It is employed in dysentery & applied externally to remove irritation from itch. It also has emetic properties. Leaves and twigs are lopped for fodder. The leaves contain 1% tannin and are sometimes employed as a soap substitute for washing hair. 

Sandpaper Raisin or Rough-leaved Raisin (Grewia Flavescens/खटखटी) is a large shrub or small tree, with beautifully bright yellow flowers. It is multi-stemmed and densely branched, forming a very irregular leafy canopy. Leaves are simple, alternate, hairy and light green on both sides, being more hairy underneath; with irregularly toothed edges. The fruit is berry-like and hard. The skin of the fruit is said to be the hardest amongst the Grewia species. The fruit are eaten by birds, especially hornbills, and also by monkeys. 

The species is also known for its ornamental value and is used as a vegetable, fodder and to make baskets. The fruits are used as food and for traditional medicinal treatments.

The fruits of Grewias attracts many birds and is also consumed by monkeys and antelopes. Leaves are food plants for the larvae of moth-like Skipper butterflies. The trees also serve as important pollinators, food source for many animals and provide a good support for the ecosystem. These species have high potential in agroforestry practices as well as have high ornamental value. Hence it is great have one of these beauties near house!

The Indian Oak

Teak (Tectona Grandis/सागवान, साग) is a tall, deciduous tree, having small, beautiful fragrant white flowers and large leaves. Flowers usually appear during the rainy season, and trees tend to flower synchronously. It grows moderately fast and has open crown open with many small branches; the bole is often buttressed and may be fluted with deep root system. 

Though not a garden plant precisely, it has high ornamental value. It is a very important candidate in an ecosystem with a long life span. Due to its tall growing nature, it is a preferred roosting and nesting site for number of birds. Teak tree is visited by number of insects too. It is pollinated by black-ants, flies and particularly by bees. Teak is also used as a food plant by the larvae of moths of the genus Endoclita including E. aroura, E. chalybeatus, E. damor, E. gmelina, E. malabaricus, E. sericeus and E. signifer and other Lepidoptera including Turnip Moth. :-)

Teak trees survive and grow under a wide range of climatic and soil conditions. It is light-demander species. Each pair of its leaves is arranged at 90° to the adjacent pair, so as to maximize their ability to receive & trap sunlight. It grows best in a warm, moist, tropical climate with a significant difference between dry and wet seasons. It is a hardy species which is the first to colonize barren environments or previously bio-diverse ecosystems that have been disrupted, such as by fire. Even young plants show a remarkable capability to recover after fire. Hence Teak is known as a Pioneer species. In contrast to other pioneer species, it is able to persist, dominate and to naturally regenerate towards the climax phase of succession in most parts of its natural range. It occurs naturally in various types of tropical deciduous forests. It is often a dominant member of a mixed deciduous forest, where its main associates are Shorea Robusta, Terminalia spp., Xylia spp., Lagerstroemia spp., Haldina, Dalbergia Latifolia, Bambusa Bambos and Dendrocalamus Strictus. 

Natural regeneration of Teak is particularly abundant in forests exposed to fires. It is also propagated by seeds & stumps. The vitality of teak stumps is remarkable. Soaking the seeds for 48 hours in water before sowing is the best treatment for hastening germination. It coppices and pollards vigorously, sometimes retaining coppicing power to a considerable size.  

Teak is a suitable ideotype for agroforestry because of having deciduous nature, sparse canopy and deep root system. It may be planted as a wind break. Though it gives good quality charcoal, it is usually considered too valuable for it. It produces a yellowish-brown or reddish dye, which is used for paper, clothes and matting. 

According to Ayurveda, it is acrid, cooling, laxative, sedative to gravid uterus and useful in treatment of piles, leucoderma and dysentery. Flowers are acrid, bitter and dry and useful in bronchitis, biliousness, urinary discharges etc. Roots are useful in treatment of urinary system related troubles. According to Unani system of medicine, the oil from flower is hair promoter and useful in scabies. It is also good for head-ache, biliousness, burning sensation and pain and liver related troubles. It allays thirst and possess anthelmintic & expectorant properties.

Teak is one of the most important timbers in the world - a rare combination of superior physical & mechanical properties makes it a paragon of timber, and there is no likelihood of it being eclipsed by any other. Teak is often grown in botanical gardens and is occasionally cultivated in tropical countries as an ornamental for its large leaves and spreading flower clusters.

The Sheep Horn

Medhshingi or Medsing (Dolichandrone Falcata/मेढशिंगी, मेढशिंग) is a small to medium sized deciduous tree with pretty flowers attractively dense and dark foliage.

The flowers are white in colour, and just like the Coral Jasmine / Parijataka tree, bloom in the evening & fall down in the morning spreading the highly scented wave of freshness in summer months of March to May. Even without flowers, the tree shows off its glossy green leaves. It grows at moderate speed. This tree strongly needs to be introduced in city gardens.

The flowering of this tree is very profuse and fragrant. Its flower’s capsule appears nearly quadrangular, curved like a sickle, giving it an appearance of curved sheep horns, hence the name Medhsing or Bhershing. When in bloom, it attracts variety of birds and bees. It is easily propagated by its papery seeds.

The tree is also known to have medicinal properties. It is used to treat diabetes. The Father of  Surgery, Sushruta, had placed the Medhshingi tree in Shaalasaaraadi & Varunaadi Gana, Shiro-virechana & Vaata Samshamana Varga; and describes its use particularly in cataract, vision disorders, head diseases, wound healing and as an anxiolytic. 

Medhshingi gives useful green manure and young leaves, an excellent fodder, are eaten by cattle. It can coppice well, forming a compact crown. Sometimes, it can be used as windbreak in farms. It is very hardy & drought resistant species. It can also grow in poor quality soils. It is fit for propagating in the driest localities and rocky terrain. It makes an ideal ornamental candidate for plantation in urban areas.

The Rosewoods

There is a tree which is often mistaken for Indian Rosewood due to striking similarity in their leaves and flowers. But can be distinguished by somewhat darker bark.

Black Rosewood (Dalbergia Latifolia/काळा शिसम, काळारुख) is moderate-to-large sized tree with a dome shaped crown of lush green foliage. The leaves of Shisham have pointing tip whereas the leaves of this species are blunt and broadly rounded with wavy margins. The broad leaves explains the species name latifolia.

Furthermore, though it sheds its leaves, it can hardly be found leafless. It flowers abundantly in aromatic clusters of white colour creating an eye-soothing view. Due to these reasons, it is noted to attract number of birds, butterflies, insects and wildlife. Hence the tree needs to be introduced in home gardens in urban societies. 

Practically, Black Rosewood is quite similar to Shisham, including their use in agroforestry, apiculture, medicines, ornamental or soil improvement. It is also a Nitrogen-fixing tree and gives the nitrogen-rich foliage which is widely used as a green manure and fodder. Like other member of the genus Dalbergia, its honey is dark amber and strong flavoured.

In a drier habitat, the hardy tree is leafless for couple of months, regaining its leaves in April-May. In a moist locality, it is evergreen throughout the year. The species grows on a variety of soils. It grows best on well-drained, deep, moist soils & black cotton soils. The root system of the tree is well developed with deep tap roots and long lateral roots. It reproduces by seed, root sucker or cuttings. Although no treatment is necessary, soaking seed in cool water for 12-24 hours will hasten germination of seeds. 

Black Rosewood is widely used for reforestation of eroded soils. It is also planted as a roadside tree and shade tree. It acts as a soil improver. The leaf litter decomposes slowly releasing nutrients gradually and it is used as mulch. Medicines are made from the tannins in the bark, for diarrhoea, worms, indigestion, and leprosy. These tannins also produce an appetizer.

There is another species from the same genus, Dhobin or Phansi (Dalbergia Lanceolaria subsp. Paniculata/धोबीन, फणशी, दोंडूस) is a very conspicuous and handsome, deciduous tree. It is eye as well as ear catching tree when profusely covered with flowers and young leaves. The tree is actually loud with the buzzing of thousands of bees. Its flowers are white & fragrant.

This species is a moderately fast growing tree. It is recommended for reforestation projects on degraded land where seeds are unlikely to grow successfully. It is propagated by seeds. Young seedlings grow well in the dappled shade of the forest, but they become more light-demanding as they grow older. 

Different parts of trees particularly seed and bark are used in the Ayurveda; mainly to treat arthritic infections and inflammations.

The lesser known tree species has a great potential in Agroforestry. Dhobin has a symbiotic relationship with certain soil bacteria, these bacteria form nodules on the roots and fix atmospheric nitrogen. Some of this nitrogen is utilized by the growing plant but some can also be used by other plants growing nearby. In  other uses, it is used as wind  break for micro-climate enhancement, nectar source for honeybees, and in addition to these leaves are used as a fodder for livestock animals. 

Both these Rosewoods are excellent choice for farmers as well as city dwellers!

Dridhataru...The Robust Tree!

The Button tree or Dhok (Anogeissus Pendula/धोक, काळा धावडा) is a beautiful, moderate-sized species. With or without flowers, the tree is known for grace and beauty of its silky foliage. In winters before falling, the leaves turn a beautiful yellowish red. Every time you visit the tree, it appears surprisingly different!

Dhok is often confused with well-known Dhvada tree or rather, is recognized as Dhavda. It has variable bark. Dhok has tiny fragrant flowers in dense clusters. It is a dominant species on sloppy & rocky soils, as nothing else can survive there. It coppices & pollards well and the coppice shoots are fairly fast growing, although the tree grows slowly. It fruits abundantly but has low germination rate. 

Despite having such a low regeneration capacity and a very tough growing conditions, the tree does something spectacular to regenerate. Mr. Pradip Krishen, the writer & environmentalist, finds the tree very unique and pretty. Under the soil surface, a tree sends out a horizontal stem, called a ‘stolon’ and from the end, a sapling roots. Such stems extend in every direction, spawning a colony of genetically identical trees. “It’s like the trees are holding hands. Button tree is more like a Banyan, which instead of sending aerial roots down, sends subterranean shoots up.” says Krishen. 

Dhok is a very important tree species of the fragile eco-systems. It is a drought hardy plant that yields excellent animal fodder and other products like green dye and tannins. The tree is also known for many medicinal properties and has uses for ailments like dysentery, gastric disorders, skin problems, cough or for its anti-oxidant properties. 

It has ecological significance for the Aravalli range and other hilly areas of the country, where it is difficult for other tree species to thrive. It is a hardy tree that can survive even in the extreme conditions.

Axlewood tree or Dhavda (Anogeissus Latifolia/धावडा, धव) is a similar beautiful species from same genus. It is a medium-to-large sized, deciduous tree.

It is one of the most useful multi-purpose trees in India. Axlewood also has tiny beautiful fragrant flowers in dense clusters. But flowerless tree is also equally attractive, mainly due to the bark. Its bark surface is smooth or with scales, pale to dark gray and is mottled in a characteristic pattern. It has somewhat similar flowers and fruits as that of Dhok. Leaves are nearly opposite on drooping branches. 

The drought tolerant tree is also fire-resistant, but does not tolerate water-logging. It is found on a variety of soils, but prefers deep alluvial soils. The tree’s robust nature gives it the Sanskrit name Dridhataru! :)

It is usually mentioned as a possible agroforestry species. Tussar silkworms are fed on its foliage, which is also used as fodder for cattle and buffaloes. Its flowers are an important pollen source for bees. The tree is a good survivor on eroded land. It is often used for river bank stabilization. The tree improves the quality of soil wherever planted. Axlewood tree contributes to soil nutrient cycle by exhibiting high leaf-litter decomposition rates. Its leaves contain large amounts of tannin. The tree is the source of Indian gum, also known as Ghatti gum. Ghatti gum is a good substitute for Gum-arabic and is used in printing, for confectioneries, in dye processes and as a binding agent in pharma industries. It also gives good quality charcoal.

Medicinally, the plant root pacifies vitiated kapha, vata and abdominal disorders. The bark cures vitiated conditions of kapha and vata, wounds and ulcers, inflammations, diabetes, haemorrhages, haemoptysis, diarrhoea, dysentery, haemorrhoids, skin diseases, liver diseases and general debility. Also it is reported to be used in treating snake bites and scorpion stings in India.

Axlewood can be propagated by seeds and coppices. The seeds are soaked in cold water for about 48 hours or 3-min hot water treatment is done for successful germination. The tree produces root suckers, coppices and pollards well.

Both these trees deserve far more attention as an ornamental and ecologically important trees. May be that's why these trees got their place on the 11th anniversary of Gifting Trees...! :-)