Dracaena fragrans
Encyclopedia
Dracaena fragrans is a flowering plant
Flowering plant
The flowering plants , also known as Angiospermae or Magnoliophyta, are the most diverse group of land plants. Angiosperms are seed-producing plants like the gymnosperms and can be distinguished from the gymnosperms by a series of synapomorphies...

 species
Species
In biology, a species is one of the basic units of biological classification and a taxonomic rank. A species is often defined as a group of organisms capable of interbreeding and producing fertile offspring. While in many cases this definition is adequate, more precise or differing measures are...

 that is native throughout tropical Africa
Africa
Africa is the world's second largest and second most populous continent, after Asia. At about 30.2 million km² including adjacent islands, it covers 6% of the Earth's total surface area and 20.4% of the total land area...

, from Sudan
Sudan
Sudan , officially the Republic of the Sudan , is a country in North Africa, sometimes considered part of the Middle East politically. It is bordered by Egypt to the north, the Red Sea to the northeast, Eritrea and Ethiopia to the east, South Sudan to the south, the Central African Republic to the...

 south to Mozambique
Mozambique
Mozambique, officially the Republic of Mozambique , is a country in southeastern Africa bordered by the Indian Ocean to the east, Tanzania to the north, Malawi and Zambia to the northwest, Zimbabwe to the west and Swaziland and South Africa to the southwest...

, west to Côte d'Ivoire
Côte d'Ivoire
The Republic of Côte d'Ivoire or Ivory Coast is a country in West Africa. It has an area of , and borders the countries Liberia, Guinea, Mali, Burkina Faso and Ghana; its southern boundary is along the Gulf of Guinea. The country's population was 15,366,672 in 1998 and was estimated to be...

 and southwest to Angola
Angola
Angola, officially the Republic of Angola , is a country in south-central Africa bordered by Namibia on the south, the Democratic Republic of the Congo on the north, and Zambia on the east; its west coast is on the Atlantic Ocean with Luanda as its capital city...

, growing in upland regions at 600 – altitude.

Description

It is a slow growing shrub, usually multistemmed at the base, mature specimens reaching 15 m (49.2 ft) or more tall with a narrow crown of usually slender erect branches. Stems may reach up to 30 cm (11.8 in) diameter on old plants; in forest habitats they may become horizontal with erect side branches. Young plants have a single unbranched stem with a rosette of leaves until the growing tip flowers or is damaged, after which it branches, producing two or more new stems; thereafter, branching increases with subsequent flowering episodes.

The leaves are glossy green, lanceolate, 20 – long and 2 – wide; small leaves are erect to spreading, and larger leaves usually drooping under their weight. The flower
Flower
A flower, sometimes known as a bloom or blossom, is the reproductive structure found in flowering plants . The biological function of a flower is to effect reproduction, usually by providing a mechanism for the union of sperm with eggs...

s are produced in panicles 15 – long, the individual flowers are 2.5 cm (0.984251968503937 in) diameter, with a six-lobed corolla, pink at first, opening white with a fine red or purple central line on each of the 7 – lobes; they are highly fragrant, and popular with pollinating insects. The fruit is an orange-red berry 1 – diameter, containing several seeds.

Cultivation and uses

In Africa, Cornstalk Dracaena is widely grown as a hedge
Hedge
Hedge may refer to:* Hedge or hedgerow, line of closely spaced shrubs planted to act as a barrier* Hedge , investment made to limit loss* Hedge , intentionally non-committal or ambiguous sentence fragments-See also:...

 plant; it is suited to frost-free climates, in USDA zones
Hardiness zone
A hardiness zone is a geographically defined area in which a specific category of plant life is capable of growing, as defined by climatic conditions, including its ability to withstand the minimum temperatures of the zone...

 10-11. Elsewhere, it is primarily popular as a houseplant
Houseplant
A houseplant is a plant that is grown indoors in places such as residences and offices. Houseplants are commonly grown for decorative purposes, positive psychological effects, or health reasons such as indoor air purification...

, valued for its tolerance of a wide range of indoor conditions from full sun to low light conditions. It is also very tolerant of neglect, and has been shown by the NASA Clean Air Study
NASA Clean Air Study
The NASA Clean Air Study has been led by the NASA in association with the Associated Landscape Contractors of America . Its results suggest that certain common indoor plants may provide a natural way of removing toxic agents such as benzene, formaldehyde and trichloroethylene from the air, helping...

 to help remove indoor pollutants such as formaldehyde
Formaldehyde
Formaldehyde is an organic compound with the formula CH2O. It is the simplest aldehyde, hence its systematic name methanal.Formaldehyde is a colorless gas with a characteristic pungent odor. It is an important precursor to many other chemical compounds, especially for polymers...

, xylene
Xylene
Xylene encompasses three isomers of dimethylbenzene. The isomers are distinguished by the designations ortho- , meta- , and para- , which specify to which carbon atoms the two methyl groups are attached...

 and toluene
Toluene
Toluene, formerly known as toluol, is a clear, water-insoluble liquid with the typical smell of paint thinners. It is a mono-substituted benzene derivative, i.e., one in which a single hydrogen atom from the benzene molecule has been replaced by a univalent group, in this case CH3.It is an aromatic...

.

Several cultivar
Cultivar
A cultivar'Cultivar has two meanings as explained under Formal definition. When used in reference to a taxon, the word does not apply to an individual plant but to all those plants sharing the unique characteristics that define the cultivar. is a plant or group of plants selected for desirable...

s are available with the leaves variegated
Variegation
Variegation is the appearance of differently coloured zones in the leaves, and sometimes the stems, of plants. This may be due to a number of causes...

 with longitudinal white or yellow stripes. The most popular cultivar is 'Massangeana', which has a bright yellow central stripe on the leaves. The cultivar 'Compacta' is more compact, for indoor locations. Other popular cultivars include 'Janet Craig' and 'Warneckii', these often sold under the synonym D. deremensis.

In cultivation in the Neotropics, the flowers are visited by a few generalist hummingbird species like the Sapphire-spangled Emerald
Sapphire-spangled Emerald
The Sapphire-spangled Emerald, Amazilia lactea, is a species of hummingbird that occurs in Venezuela, Peru, Bolivia and Brazil from the Amazon south to Santa Catarina; there are uncertain records from east Ecuador. Both male and female have a bright "sapphire" blue chest and chin and green-blue...

 (Amazilia lactea).

Propagation

Dracaena fragrans is propagated by cutting segments of old stems 10 – long. These are allowed to dry off, and then inserted into moist sand until they have rooted. New growth, typically two or three shoots, comes from old leaf scars at the top of the stem.

Etymology and synonymy

The species name refers to the fragrant flowers, while the English name derives from a perceived resemblance of the stem to a corn
Maize
Maize known in many English-speaking countries as corn or mielie/mealie, is a grain domesticated by indigenous peoples in Mesoamerica in prehistoric times. The leafy stalk produces ears which contain seeds called kernels. Though technically a grain, maize kernels are used in cooking as a vegetable...

(Zea mays) stalk. Synonyms include Aletris fragrans L. (basionym), Cordyline fragrans (L.) Planch., Pleomele fragrans (L.) Salisb., Sansevieria fragrans (L.) Jacq., Dracaena deremensis Engl., Dracaena smithii Hook.f., and Dracaena ugandensis Baker. Other English names include striped dracaena (for variegated cultivars), corn plant (for the cultivar 'Massangeana';) and Chinese money tree.
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