''Ipomoea alba'', known in English as white tropical morning glory, moonflower or moonvine, is a species of night-blooming

morning glory Morning glory (also written as morning-glory) is the common name for over 1,000 species of flowering plants in the family Convolvulaceae, whose taxonomy and systematics remain in flux. These species are distributed across numerous genus, gene ...

, native to tropical and subtropical regions of North and South America, from

Argentina Argentina, officially the Argentine Republic, is a country in the southern half of South America. It covers an area of , making it the List of South American countries by area, second-largest country in South America after Brazil, the fourt ...

to northern

Mexico Mexico, officially the United Mexican States, is a country in North America. It is the northernmost country in Latin America, and borders the United States to the north, and Guatemala and Belize to the southeast; while having maritime boundar ...

Arizona Arizona is a U.S. state, state in the Southwestern United States, Southwestern region of the United States, sharing the Four Corners region of the western United States with Colorado, New Mexico, and Utah. It also borders Nevada to the nort ...

Florida Florida ( ; ) is a U.S. state, state in the Southeastern United States, Southeastern region of the United States. It borders the Gulf of Mexico to the west, Alabama to the northwest, Georgia (U.S. state), Georgia to the north, the Atlantic ...

And Bly and the West Indies. Though formerly classified as genus ''Calonyction'', species ''aculeatum'', it is now properly assigned to genus ''

Ipomoea ''Ipomoea'' () is the largest genus in the plant family Convolvulaceae, with over 600 species. It is a large and diverse group, with common names including morning glory, Ipomoea aquatica, water convolvulus or water spinach, sweet potato, ...

'', subgenus ''Quamoclit'', section ''Calonyction''.

Description

''Ipomoea alba'' is a

perennial In horticulture, the term perennial ('' per-'' + '' -ennial'', "through the year") is used to differentiate a plant from shorter-lived annuals and biennials. It has thus been defined as a plant that lives more than 2 years. The term is also ...

herbaceous Herbaceous plants are vascular plants that have no persistent woody stems above ground. This broad category of plants includes many perennials, and nearly all annuals and biennials. Definitions of "herb" and "herbaceous" The fourth edition of ...

liana A liana is a long-Plant stem, stemmed Woody plant, woody vine that is rooted in the soil at ground level and uses trees, as well as other means of vertical support, to climb up to the Canopy (biology), canopy in search of direct sunlight. T ...

growing to a height of tall with twining stems. The

leaves A leaf (: leaves) is a principal appendage of the stem of a vascular plant, usually borne laterally above ground and specialized for photosynthesis. Leaves are collectively called foliage, as in "autumn foliage", while the leaves, stem, ...

are entire or three-lobed, long, with a stem long. The

flower Flowers, also known as blooms and blossoms, are the reproductive structures of flowering plants ( angiosperms). Typically, they are structured in four circular levels, called whorls, around the end of a stalk. These whorls include: calyx, m ...

s are fragrant, white or pink, and large, diameter. The flowers open quickly in the evening and last through the night, remaining open until touched by the morning dew. On overcast days, the blossoms may remain open for longer. The flowers also tend to remain open longer during cool temperatures, which may also cause the segments to snag or tear as they open. The seeds are yellowish light brown to nearly black in color and nearly round, long and wide. The seeds are quite buoyant. In an experiment they floated in water for a year and a half. The leaves, flowers, and seeds are toxic to humans, cats, dogs, and livestock.

Names

''Ipomoea alba'' is known by a variety of

common name In biology, a common name of a taxon or organism (also known as a vernacular name, English name, colloquial name, country name, popular name, or farmer's name) is a name that is based on the normal language of everyday life; and is often con ...

s. Many of them allude to its night-blooming white flowers, including "moonflower", "moonvine", "white moonflower", and "tropical white morning glory". Though "moonflower" is most often used with ''Ipomoea alba'' specifically, it is used for other plants, including those formerly placed in ''Calonyction'' and now in genus ''Ipomoea'', '' Ipomoea muricata'', '' Datura candida'', '' Brugmansia suaveolens'', and '' Selenicereus wittii''. The similar "moon-flower" was used in the 1800s as a name for ''Anemonoides altaica'', ''

Leucanthemum vulgare ''Leucanthemum vulgare'', commonly known as the ox-eye daisy, oxeye daisy, dog daisy, marguerite (, "common marguerite") and other common names, is a widespread flowering plant native to Europe and the temperate regions of Asia, and an introduced ...

'', and '' Rabelera holostea''.

Historical use

The

Mesoamerican Mesoamerica is a historical region and cultural area that begins in the southern part of North America and extends to the Pacific coast of Central America, thus comprising the lands of central and southern Mexico, all of Belize, Guatemala, El S ...

civilizations used the ''Ipomoea alba'' morning glory to convert the

latex Latex is an emulsion (stable dispersion) of polymer microparticles in water. Latices are found in nature, but synthetic latices are common as well. In nature, latex is found as a wikt:milky, milky fluid, which is present in 10% of all floweri ...

from the '' Castilla elastica'' tree to produce bouncing

rubber Rubber, also called India rubber, latex, Amazonian rubber, ''caucho'', or ''caoutchouc'', as initially produced, consists of polymers of the organic compound isoprene, with minor impurities of other organic compounds. Types of polyisoprene ...

balls. The

sulfur Sulfur ( American spelling and the preferred IUPAC name) or sulphur ( Commonwealth spelling) is a chemical element; it has symbol S and atomic number 16. It is abundant, multivalent and nonmetallic. Under normal conditions, sulfur atoms ...

in this morning glory served to cross-link the rubber, a process predating

Charles Goodyear Charles Goodyear (December 29, 1800 – July 1, 1860) was an American self-taught chemist and manufacturing engineer who developed vulcanized rubber, for which he received patent number 3633 from the United States Patent Office on June 15, 1844 ...

's discovery of

vulcanization Vulcanization (British English: vulcanisation) is a range of processes for hardening rubbers. The term originally referred exclusively to the treatment of natural rubber with sulfur, which remains the most common practice. It has also grown to ...

by at least 3,000 years.

Cultivation

The species is widely cultivated as an

ornamental plant Ornamental plants or ''garden plants'' are plants that are primarily grown for their beauty but also for qualities such as scent or how they shape physical space. Many flowering plants and garden varieties tend to be specially bred cultivars th ...

for its flowers. In areas too cold for winter survival, it can be grown as an

annual plant An annual plant is a plant that completes its life cycle, from germination to the production of seeds, within one growing season, and then dies. Globally, 6% of all plant species and 15% of herbaceous plants (excluding trees and shrubs) are ...

. Since it is of tropical origin, it flowers best under a summer short-day photoperiod. Though it can be successfully flowered in the north, its flowering is impaired by excessively long summer days. Thus, at higher latitudes it often does not set buds and bloom until early autumn, when daylight length is once again near 12 hours. Propagation is usually by seed. The seed resembles a small, brownish nut, and should be nicked with a file and then soaked overnight before planting. In some areas, the plant is an

invasive species An invasive species is an introduced species that harms its new environment. Invasive species adversely affect habitats and bioregions, causing ecological, environmental, and/or economic damage. The term can also be used for native spec ...

which can cause problems in agricultural settings.

References

External links

* {{Taxonbar, from=Q133294

alba ''Alba'' ( , ) is the Scottish Gaelic name for Scotland. It is also, in English-language historiography, used to refer to the polity of Picts and Scots united in the ninth century as the Kingdom of Alba, until it developed into the Kingd ...

Flora of Northern America Plants described in 1753 Taxa named by Carl Linnaeus Night-blooming plants Flora of Southern America