HAEMATOXYLUM CAMPECHIANUM PDF

Blommed logwood trees, photography of flowers of palo de Campeche in El Peten area of Guatemala. Haematoxylum campechianum is indigenous in Mexico (along the south-eastern coast of the Gulf of Campeche and in Peninsular Yucatan) and Belize. Logwood: Logwood, (Haematoxylum campechianum), tree of the pea family ( Fabaceae), native to Central America and the West Indies. The wood is heavy and.

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L ogwood is a dye-producing tree legume originating in Central America, its natural range extending from southern Mexico to neighbouring Guatemala and Belize.

Introduced long ago into other parts of tropical America, it is now naturalised across Central America, haematoxyljm Caribbean and northern South America. The upright stems are twisted or deeply fluted and covered in grey or brown bark that becomes cracked, rough and flaking with age. The leaves are 5 to 12 cm 2 to 4.

File:Haematoxylum campechianum (CampĂȘche).jpg

They fall off the tree in the dry season to conserve water, leaving the branches partially bare until new leaves emerge, which is at the start of the rainy season. The flowers are small, light yellow, five-petaled, ill-scented and borne in cylindrical clusters up to 7.

They come into bloom in the dry season and are followed by flat seedpods 2 to 5 cm 1. The wood yields a valuable dye in the blue to purple colour range. After the arrival of Europeans, it developed into an important commercial dye for the clothing and medical industries.

Only the brownish-red heartwood contains the dye, which soon after harvesting is stripped of the surrounding sapwood. To make the dye, the heartwood is finely chipped, covered in boiling water and then left to soak for up to twelve hours. This causes the chips to ferment and the dye to leach into the water. More water is then added and the chips simmered over heat for twenty minutes, which completes the process of making the dye-liquor. In commercial operations, the dye-liquor is dehydration under vacuum to produce dye crystals.

Different colours are obtained by adding different mordants. Alum aluminium gives purple shades but needs to be combined with copper or iron to increase colour-fastness. Copper by itself gives a blueish hue and iron dark purple to black, depending on the amount added. Fibre and fabric dyed with logwood dye needs a hot dye bath, with simmering over heat for about forty-five minutes and then with soaking until cool to give a good colour. Repeated rinsing several times after dying is reportedly critical to reducing ‘dye bleed’, which is when the dye leaches out of the fabric.

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Logwood dye was once used as a colouring agent in black hair colouring and to neutralise red tones in dyed hair. The flowers produce abundant nectar and it is reported as a major nectar source and honey plant throughout its native and non-native range.

Nectar flows can be heavy and long-lasting in plants with access to water, through either groundwater or rainfall.

Pure logwood honey is light amber to almost white and reported yields have been as high as kgs lbs per colony per season. The wood is hard and heavy, in the to kgs per cubic meter 60 to 65 lbs per cubic ft range and is naturally resistant to rot and decay, but comes in logs too small and poorly-formed to make sawing them into lumber piratical.

Where they are not harvested for their dye, the stems are cut for fence posts and make an excellent firewood and charcoal. In his song ‘No woman no cry’, Bob Marley makes reference to the use of Logwood as firewood, in the verse ‘Georgie would make a fire light, as it was logwood burning through the night’. Logwood has long been introduced in Jamaica and has become naturalised there, mainly on the south coast of the island, at elevations from near sea level up to m ft.

Haematoxylum campechianum – Wikipedia

New plants are usually started from seed, which remain viable for up to eight months under cold, dry storage and germinate readily, with about half sprouting after three campecianum. Performs best on free- to slow-draining clay, loam, sand and gravel soils of a moderately acid to alkaline nature, generally with a pH of 5. Stems harvested for extracting the dye are usually ready to be cut when the plant is about ten to twelve years old. The plant produces a large amount of seed that germinate readily.

Logwood is recorded as a weed of the natural environment in countries such as Australia and as an invasive xampechianum in the Caribbean, a term only applied to serious, high impact weeds.

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Home page Haematoxylum campechianum. Logwood Other common names: Blackwood, Bloodwood, Campeche wood Names in non-English languages: Description L ogwood is a dye-producing tree legume originating in Central America, its natural range extending from southern Mexico to neighbouring Guatemala and Belize.

Use The wood yields a valuable dye in the blue to purple colour range. In commercial operations, the dye-liquor is dehydration under vacuum to produce dye crystals Different colours are obtained by adding different mordants. General interest In his song ‘No woman no cry’, Bob Marley makes reference to the use of Logwood as firewood, in the verse ‘Georgie would make a fire light, as it was logwood burning through the night’. Growing New plants are usually started from seed, which remain viable for up to eight months under cold, dry storage and germinate readily, with about half sprouting after three weeks.

Problem features The plant produces a large amount of seed that germinate readily. The branches are armed with sharp thorns or spines that can inflict injury on the unwary. Richardson Press, Melbourne Randall, R.

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