Dracaena Reflexa

''Dracaena reflexa'' (commonly called song of India or song of Jamaica) is a tree native to Mozambique, Madagascar, Mauritius, and other nearby islands of the Indian Ocean. It is widely grown as an ornamental plant and houseplant, valued for its richly coloured, evergreen leaves, and thick, irregular stems.

Description

While it may reach a height of 4–5 m, rarely 6 m in ideal, protected locations, ''D. reflexa'' is usually much smaller, especially when grown as a houseplant. It is slow-growing and upright in habit, tending to an oval shape. The lanceolate leaves are simple, spirally arranged, 5–20 cm long and 1.5–5 cm broad at the base, with a parallel venation and entire margin; they grow in tight whorls and are a uniform dark green.

The flowers are small, clustered, usually white and extremely fragrant, appearing in mid winter. Neither the flowers nor the fruit are especially showy. ''D. reflexa'' var. ''angustifolia'' (syn. ''D. marginata'') differs in having a magenta tint to its flowers, a shrubby habit, and olive green leaves.

Taxonomy

''Dracaena reflexa'' was first described by Jean-Baptiste Lamarck in 1786. It has been placed in several other related genera, including ''Cordyline'' and ''Pleomele''.

Varieties

, the World Checklist of Selected Plant Families accepts the following varieties, most described from Madagascar:
*''Dracaena reflexa'' var. ''angustifolia'' Baker – western Indian Ocean islands
*''Dracaena reflexa'' var. ''bakeri'' (Scott Elliot) H.Perrier – south-east Madagascar
*''Dracaena reflexa'' var. ''brevituba'' H.Perrier – central Madagascar
*''Dracaena reflexa'' var. ''condensata'' H.Perrier – south-east Madagascar
*''Dracaena reflexa'' var. ''lanceolata'' H.Perrier – Madagascar
*''Dracaena reflexa'' var. ''linearifolia'' Ayres ex Baker – Mascarenes, Madagascar
*''Dracaena reflexa'' var. ''nervosa'' H.Perrier – Madagascar
*''Dracaena reflexa'' var. ''occidentalis'' H.Perrier – west and south-west Madagascar
*''Dracaena reflexa'' var. ''parvifolia'' Thouars ex H.Perrier – east Madagascar
*''Dracaena reflexa'' var. ''reflexa'' – north-east Mozambique, western Indian Ocean islands
*''Dracaena reflexa'' var. ''salicifolia'' (Regel) Baker – Madagascar
*''Dracaena reflexa'' var. ''subcapitata'' H.Perrier – east Madagascar
*''Dracaena reflexa'' var. ''subelliptica'' H.Perrier – east Madagascar

Cultivation and uses

''Dracaena reflexa'' is a popular ornamental plant, both in the landscape and the home. It can be enjoyed as a specimen plant, accent, or pruned to create a border. Several cultivars have been selected, particularly variegated clones with cream and yellow-green margins. It performs well as a houseplant, tolerating infrequent waterings. It prefers bright, filtered light, without direct sun exposure, restricted outdoors to zones 10–11. It has average water needs and should be fertilized bi-weekly when actively growing. Although it can survive in relatively low light levels, the plant may grow spindly if given insufficient light. When grown indoors, temperatures of should be maintained. It can be propagated via herbaceous stem cuttings.

The cultivar ''Dracaena reflexa'' 'Variegata' has gained the Royal Horticultural Society's Award of Garden Merit. (confirmed 2017)

Traditional medicine practitioners of Madagascar have long believed ''Dracaena reflexa'' to cure malarial symptoms, poisoning, dysentery, diarrhea, dysmenorrhea, and to be useful as an antipyretic and hemostatic agent. The leaves and bark are mixed with parts of a number of other native plants and mixed into herbal teas. Its effectiveness in any such treatment remains unproven.

The fruit of ''D. reflexa'' is also important to the diet of the Malagasy black-and-white ruffed lemur (''Varecia variegata variegata''). The Frégate beetle (''Polposipus herculeanus''), an endangered species endemic to Frégate Island (Seychelles), is also known to associate with this plant.

''Dracaena reflexa'' var. ''angustifolia''

''Dracaena reflexa'' var. ''angustifolia'' is also known as ''D. marginata'', a name found in horticulture. This is a durable popular tropical house plant from Madagascar. The thin leaves are linear and a deep, glossy green color with red edges; typically 30–90 cm long and 2–7 cm broad, tapering to an acuminate point. It is a popular houseplant that needs little attention, with several cultivars available with the leaves variegated with red or pale yellow.

It requires a minimum temperature of , and is more tolerant than most plants of dry soil and irregular watering, though liable to root decay in permanently wet soil. Because it requires minimal care it is very popular in offices where the constant heat and light suits its growing requirements. They can grow between 2.5–4 meters in height and will ultimately spread between 1.5 and 2.5 meters.

There are many commonly used names to describe this variety that arise due to the various growth patterns and different cultivars. Some of the most popular are red edge dracaena, Madagascar dragon tree dracaena, dragon blood tree, and tree dracaena. With the variety of forms and cultivars, there are also some hybrid crosses that can arise as well.

The cultivar 'Tricolor' has gained the Royal Horticultural Society's Award of Garden Merit.

Versatility

The plant can be grown in virtually any pattern, with the most popular being bush, straight cane, staggered cane, tree form, and custom character forms. The variety also has a handful of different cultivars from selective breeding. These include 'Tarzan', 'Magenta', 'Tricolor', and 'Colorama'.

Uses

It is one of the plants used in the NASA Clean Air Study and has shown to help remove formaldehyde. It is an effective air cleaner and is said to be among the best plants for removing xylene and trichloroethylene.

References

Bibliography

* Huxley, A. (1992). ''New RHS Dictionary of Gardening'' 2: 96–97. Macmillan.

External links

*

{{Taxonbar, from=Q135016

reflexa
Flora of Mozambique
Flora of the Western Indian Ocean
Flora of the Madagascar ericoid thickets
Taxa named by Jean-Baptiste Lamarck
Plants described in 1786
House plants