Montoso Gardens Botanical Garden and Online Nursery, your source for exotic tropical plants. Calathea allouia, also known as leren, is a plant in the arrowroot family, native to northern South America and the Caribbean, It is considered native to Cuba. Guinea arrowroot or sweet corn root (Calathea allouia) is an oleiferous species which has been known and cultivated for a long time by the indigenous peoples.

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It is cooked in water for 15 to 20 minutes and its flavour is similar to that of cooked green maize. Tropical Plants Database, Ken Fern.

Plants of Saint Lucia

Leren is mostly eaten as an hors d’oeuvre or appetizer. The leaves have an enveloping calxthea forming short pseudostems; the petioles are long and striated, the leaf blades elliptical – similar to those of rattan palm – and measure 20 calsthea 60 x 5 to 20 cm. Archived copy as title Articles with ‘species’ microformats Taxonbars with automatically added basionyms. Its main use is in infusions prepared as tea with leaves and dried stems which have been industrially shredded. London, Tropical Products Institute.

The evolution of Guinea arrowroot has the exceptional characteristic of being included within the limits of a traditional agriculture or an indigenous agriculture. The genus Calathea has wide genetic diversity.

The tubers are 2 – 8cm long and 2 – 4cm in diameter[ ]. Cystine found in Root ppm.

Of those most frequently referred to, the following deserve mention: However, this new method of management alters the models on which agroforestry was conceived: Their unique texture makes them a gourmet item[ ].


Guinea arrowroot is a species very sensitive to small water shortages and a greater availability of water has the effect of bringing forward and stimulating growth of the tuberous roots and encouraging the formation of new rhizomes.

Archaeologists have discovered that leren was one of the first plants domesticated in prehistoric South America. Guinea arrowroot is normally grown in small areas where subsistence farming is frequently carried out in association with cassava, plantain or fruit-trees. The leaves are large and used as tamales wrap. Used in similar ways to potatoes[ ]. Brazil is the world’s second producer, followed by Paraguay. It prefers moist soil.

The plants are generally planted with 0. This experiment shows, furthermore, that too prolonged an immersion also has harmful effects.

Some information cannot be used for commercial reasons or calafhea modified but some can. In spite of higher costs, the yield per hectare greatly increases.

Guinea arrowroot or sweet corn root Calathea allouia is an oleiferous species which has been known and cultivated for a long time by the indigenous peoples of tropical America. The roots foreground for sale in a market Photograph by: They must be stratified or sown immediately, otherwise they quickly lose their viability.

It will undoubtedly depend on the evolution of agriculture itself. It is in this context that the potential of little-known species should be evaluated. Glutamic-acid found in Root ppm Allouka found in Root ppm.

Calathea allouia – Wikipedia

In the last 15 years, INPA has carried out research and distributed reproductive material to small farmers as pan of its extension activities. The larvae of coleoptera and lepidoptera cause lesions in the rhizomes and tubers while mite damage has been seen on the leaves and causes the plants to die.


In areas infested with phytoparasitic nematodes, Guinea arrowroot shows no symptom of pest attack. Isoleucine found in Root ppm. It sprouts with the first rains and grows rapidly, forming tubers which are harvested as the foliage begins to die back eight or nine months after the initial sprouting. Although no archaeological remains have been found that show that it was used in pre-Columbian times, it is assumed that it was the Guarani Indians who taught the Spanish how to use it.

Harvesting is not mechanized and the pruning system is generally incorrect. The infraspecific classification of I. Productivity of the tuberous roots is quadrupled if they are grown on plots treated with organic fertilizers fruit and vegetable waste. Leren usually reproduces itself through rhizomes which produce shoots and new plants.

Prefers a pH in the range 6 – 7, tolerating 5.

In former times, the plant played a more important role for making blankets, mattresses, pillows, baskets and umbrellas[ ]. Potential areas for the introduction of this crop are subtropical regions with acid soils and a water supply similar to those of the species’ natural area of dispersal.

Although it is cultivated only on a small scale by some traditional growers and indigenous populations, Guinea arrowroot can be found practically throughout the Amazon region. Figure 30 shows the natural distribution of I.

Knowledge concerning the genetic improvement of Guinea arrowroot is still incipient. Efeitos do fotoperiodo e reguladores de crescimento no desenvolvimento de plantas de aria Calathea allouia Aubl.