Anthurium is a large genus of about of about 1,000 species, belonging to the arum family (Araceae). Because of the structure of the spathe and spadix it is also called "Flamingo Flower".
The species has neotropical distribution; mostly in wet tropical mountain forest of Central America and South America, but some in semi-arid environments. Most species occur in Panama, Colombia, Brazil, the Guiana Shield and Ecuador.
Growth habits
Anthurium grows in many forms, mostly evergreen, bushy or climbing epiphytes with roots that can hang from the canopy all the way to the floor of the rain forest. There are also many terrestrial forms which are found as understory plants, as well as hemiepiphytic forms. They occur also as lithophytes.
The stems are short to elongate with a length between 15 and 30 cm. The simple leaves come in many shapes; most leaves are to be found at the end of the stems, although terrestrial plants show less of this pachycaul tendency. Leaves may be spatulate, rounded, or obtuse at the apex. They may be borne erect or spreading in a rosette, with a length that may surpass 100 cm in some of the larger species . The upper surface of the leaf may be matte, semiglossy, or fully glossy, and the leaf texture may range from leathery to fragile and papery. The leaves are petiolate and possess a structure called the geniculum, which is unique to the genus Anthurium. The geniculum allows the plant to swivel its leaves towards the sun, much in the same manner as sunflowers. In drier environments, the leaves can form a bird's-nest shaped rosette that enables the plant to collect falling debris, and thus water and natural fertilizer. Terrestrial growers or epiphytes often have cordate leaves; others grow as vines with rosettes of lanceolate leaves, and still others have many-lobed leaves.
Flowering and fruiting
Anthurium flowers develop crowded in a spike on a fleshy axis, called a spadix, a characteristic of the Araceae. The flowers on the spadix are often divided sexually with a sterile band separating male from female flowers. This spadix can take on many forms (club-shaped, tapered, spiraled, and globe-shaped) and colors (white, green, purple, red, pink, or a combination).
The spadix is part of an inflorescence, the outer portion of which is known as the spathe. The spathe may be a single color (yellow, green, or white) or possibly multicolored including burgundy and red. That sometimes colorful, solitary spathe is a showy modified bract that can be somewhat leathery in texture. Anthurium grown for the florist trade generally have highly coloured spathes and spadices. There are no flowers on the spathe as is sometimes thought; flowers are found solely on the spadix. The spathe can vary in color from pale green to white, rose, orange or shiny red. The color changes between the bud stage and the anthesis, (the time the flower expands). Thus the color might change from pale green to reddish purple to reddish brown.
The flowers are hermaphrodite, containing male and female flowers. The fruits are usually berries with one to multiple seeds on an infructescence that may be pendant or erect depending on species. Anthurium berries may range in colour from bright red to black, and may also be bicoloured or shaded. The flowers of Anthurium give off a variety of fragrances, each attracting a variety of specific pollinators.
Most hybrids are based on A. andreanum or A. scherzerianum because of their colorful spathe
Growing Anthurium
Like other Aroids, many species of Anthurium can be grown as houseplants, or outdoors in mild climates in shady spots. They thrive in moist soils with high organic matter. In milder climates the plants can be grown in pots of soil. Indoors plants thrive at temperatures between 25-32 °C and at lower light than other house plants. They do require higher humidity levels. Spraying them with mist of water will help. Wiping the leaves off with water will remove any dust and insects. Plant in pots with good root systems will benefit from a weak fertilizer solution every other week. In the case of vining or climbing Anthuriums, the plants benefit from being provided with a totem to climb.
