Orchid in the context of Orchitis

An epiphyte (from Ancient Greek epi-, meaning 'upon', and phutón, meaning 'plant') is a plant or plant-like organism that grows on the surface of another plant or plant-like organism such as kelp. It derives its moisture and nutrients from the air, rain, water (in marine environments) or from debris accumulating around it. The plants on which epiphytes grow are called phorophytes. Epiphytes take part in nutrient cycles and add to both the diversity and biomass of the ecosystem in which they occur, like any other organism. In some cases, a rainforest tree's epiphytes may weigh several tonnes. Epiphytes differ from parasitic plants in that they grow on the host for physical support only, and do not draw nourishment from it. An organism that grows on another organism that is not a plant may be called an epibiont. Epiphytes are usually found in the temperate zone (e.g., many mosses, liverworts, lichens, and algae) or in the tropics (e.g., many ferns, cacti, orchids, and bromeliads). Epiphyte species make good houseplants due to their minimal water and soil requirements. Epiphytes provide a rich and diverse habitat for other organisms including animals, fungi, bacteria, and myxomycetes.

Epiphyte is one of the subdivisions of the Raunkiær system.The term epiphytic derives from Greek epi- 'upon' and phyton 'plant'. Epiphytic plants are sometimes called "air plants" because they do not root in soil. However, that term is inaccurate, as there are many aquatic species of algae that are epiphytes on other aquatic plants (seaweeds or aquatic angiosperms).

Antonio Musa Brassavola (variously spelled Brasavola or Brasavoli; 16 January 1500 – 6 July 1555) was an Italian physician and one of the most famous of his time. He studied under Niccolò Leoniceno and Giovanni Manardo. He was the friend and physician of Ercole II, the duke of Este. He was also the consulting physician of Kings Francis I, Charles V, Henry VIII and Popes Paul III, Leo X, Clement VIII and Julius III. He performed the first successful tracheotomy, and published an account of it in 1546. He was the chair of philosophy in Ferrara and also studied botany and medicine. A genus of orchid, called Brassavola, is named after him.

A raceme (/reɪˈsiːm, rə-/) or racemoid is an unbranched, indeterminate type of inflorescence bearing flowers having short floral stalks along the shoots that bear the flowers. The oldest flowers grow close to the base and new flowers are produced as the shoot grows in height, with no predetermined growth limit. Examples of racemes occur on mustard (genus Brassica), radish (genus Raphanus), and orchid (genus Phalaenopsis) plants.

The whiplash or whiplash line is a motif of decorative art and design that was particularly popular in Art Nouveau. It is an asymmetrical, sinuous line, often in an ornamental S-curve, usually inspired by natural forms such as plants and flowers, which suggests dynamism and movement. It took its name from a woven fabric panel "Cyclamen", by the German artist Hermann Obrist (1895) which depicted the stems and roots of the cyclamen plant, which critics dubbed "Coup de Fouet" ('whiplash'). The panel was later reproduced by the textile workshop of the Darmstadt Artists Colony.

Curling whiplash lines were modelled after natural and vegetal forms, particularly the cyclamen, iris, orchid, thistle, mistletoe, holly, water lily, and from the stylized lines of the swan, peacock, dragonfly, and butterfly.

The endosperm is a tissue produced inside the seeds of most of the flowering plants following double fertilization. It is triploid (meaning three chromosome sets per nucleus) in most species, which may be auxin-driven. It surrounds the embryo and provides nutrition in the form of starch, though it can also contain oils and protein. This can make endosperm a source of nutrition in animal diet. For example, wheat endosperm is ground into flour for bread (the rest of the grain is included as well in whole wheat flour), while barley endosperm is the main source of sugars for beer production. Other examples of endosperm that forms the bulk of the edible portion are coconut "meat" and coconut "water", and corn. Some plants, such as certain orchids, lack endosperm in their seeds.

Ancestral flowering plants have seeds with small embryos and abundant endosperm. In some modern flowering plants the embryo occupies most of the seed and the endosperm is non-developed or consumed before the seed matures. In other flowering plant taxa, the Poaceae for example, the endosperm is greatly developed.

Vanilla is a spice derived from orchids of the genus Vanilla, primarily obtained from pods of the flat-leaved vanilla (V. planifolia).

Vanilla is not autogamous, so pollination is required to make the plants produce the fruit from which the vanilla spice is obtained. In 1837, Belgian botanist Charles François Antoine Morren discovered this fact and pioneered a method of artificially pollinating the plant. The method proved financially unworkable and was not deployed commercially. In 1841, Edmond Albius, a 12-year-old enslaved child who lived on the French island of Réunion in the Indian Ocean, discovered that the plant could be hand-pollinated. Hand-pollination allowed global cultivation of the plant. Noted French botanist and plant collector Jean Michel Claude Richard falsely claimed to have discovered the technique three or four years earlier. By the end of the 20th century, Albius was considered the true discoverer.

Pouyannian mimicry is a form of mimicry in plants that deceives an insect into attempting to copulate with a flower. The flower mimics a potential female mate of a male insect, which then serves the plant as a pollinator. The mechanism is named after the French lawyer and amateur botanist Maurice-Alexandre Pouyanne. The resemblance that he noted is visual, but the key stimuli that deceive the pollinator are often chemical and tactile.

In orchids, the resemblance is to a species of bee; Pouyanne observed the bee Dasyscolia ciliata pollinating the orchid Ophrys speculum. The flower uses morphology, coloration, and scent to deceive the pollinator. The chemicals secreted from the flower's osmophore glands are indistinguishable from the insect's pheromones. The pollinator is not rewarded with nectar, and may waste significant amounts of sperm while trying to mate with the flower.

Avaste Nature Reserve is a nature reserve situated in western Estonia, to largest extent in Pärnu County.

Avaste nature reserve consists of forests, fens, bogs and meadows. It is centred on Avaste fen, one of the largest fens in Estonia. The flora of the nature reserve includes sweet gale, mud sedge and several species of orchid. Several species of rare or threatened birds furthermore have a habitat in the nature reserve. These include black stork, white-backed woodpecker, Eurasian goshawk, short-eared owl, three species of eagle and others.

The New Jersey Pine Barrens, also known as the Pinelands or simply the Pines, is the largest remaining example of the Atlantic coastal pine barrens ecosystem, stretching across more than seven counties of New Jersey. Two other large, contiguous examples of this ecosystem remain in the northeastern United States: the Long Island Central Pine Barrens and the Massachusetts Coastal Pine Barrens. The name pine barrens refers to the area's sandy, acidic, nutrient-poor soil. Although European settlers could not cultivate their familiar crops there, the unique ecology of the Pine Barrens supports a diverse spectrum of plant life, including orchids and carnivorous plants. The area is also notable for its populations of rare pygmy pitch pines and other plant species that depend on the frequent fires of the Pine Barrens to reproduce. The sand that composes much of the area's soil is referred to by the locals as sugar sand.

The Pine Barrens remains mostly rural and undisturbed despite its proximity to the sprawling metropolitan cities of Philadelphia and New York City, in the center of the very densely populated Boston-Washington Corridor on the Eastern Seaboard. The heavily traveled Garden State Parkway and Atlantic City Expressway traverse sections of the eastern and southern Pine Barrens, respectively. The Pine Barrens territory helps recharge the 17-trillion-U.S.-gallon (64×10^ m) Kirkwood–Cohansey aquifer, containing some of the purest water in the United States.

In biology and botany, indeterminate growth is growth that is not terminated, in contrast to determinate growth that stops once a genetically predetermined structure has completely formed. Thus, a plant that grows and produces flowers and fruit until killed by frost or some other external factor is called indeterminate. For example, the term is applied to tomato varieties that grow in a rather gangly fashion, producing fruit throughout the growing season. In contrast, a determinate tomato plant grows in a more bushy shape and is most productive for a single, larger harvest, then either tapers off with minimal new growth or fruit or dies.

Acotyledon is used to refer to seed plants or spermatophytes that lack cotyledons, such as orchids and dodder. Orchid seeds are tiny with underdeveloped embryos. They depend on mycorrhizal fungi for their early nutrition so are myco-heterotrophs at that stage.

Although some authors, especially in the 19th century and earlier, use the word acotyledon to include plants which have no cotyledons because they lack seeds entirely (such as ferns and mosses), others restrict the term to plants which have seeds but no cotyledons.

Lycaste cruenta is a plant belonging to the orchid genus Lycaste and native to Central America.

Lycaste cruenta has greenish yellow flowers with bright orange petals and labellum about 8 cm (3 in) wide. They appear in spring in the flower stems up to 15 cm (6 in) high, and there can be more than 20 flowers in one plant. They have a sweet scent resembling cinnamon in the evening. The leaves grow to 38 cm (15 in) long and 15 cm (6 in) wide and are shed before flowering. Lycaste cruenta has pseudobulbs up to 10 cm (4 in) long and 5 cm (2 in) wide.

Asparagales (asparagoid lilies) are a diverse order of flowering plants in the monocots. Under the APG IV system of flowering plant classification, Asparagales are the largest order of monocots with 14 families, 1,122 genera, and about 36,000 species, with members as varied as asparaguses, orchids, yuccas, irises, onions, garlics, leeks, and other alliums, daffodils, snowdrops, amaryllis, agaves, butcher's broom, agapanthuses, Solomon's seal, hyacinths, bluebells, spider plants, grasstrees, aloes, freesias, gladioli, crocuses, and saffrons.

Most species of Asparagales are herbaceous perennials, although some are climbers and some are trees or shrubs. The order also contains many geophytes (bulbs, corms, and various kinds of tuber). The leaves of almost all species form a tight rosette, either at the base of the plant or at the end of the stem, but occasionally along the stem. The flowers are not particularly distinctive, being 'lily type', with six tepals and up to six stamens. One of the defining characteristics (synapomorphies) of the order is the presence of phytomelanin, a black pigment present in the seed coat, creating a dark crust. Phytomelanin is found in most families of the Asparagales (although not in Orchidaceae, thought to be the sister-group of the rest of the order).

A pollinium (pl.: pollinia) is a coherent mass of pollen grains in a plant that are the product of only one anther, but are transferred, during pollination, as a single unit. This is regularly seen in orchids, which have a complex pollination system, and many species of milkweeds (Asclepiadoideae). Usage of the term differs: in some orchids two masses of pollen are well attached to one another, but in other orchids there are two halves (with two separate viscidia) each of which is sometimes referred to as a pollinium.

Most orchids have waxy pollinia. These are connected to one or two elongate stipes, which in turn are attached to a sticky viscidium, a disc-shaped structure that sticks to a visiting insect.

Orchidology is the scientific study of orchids. It is an organismal-level branch of botany.

The genus Ophrys is a large group of orchids from the alliance Orchis in the subtribe Orchidinae. They are widespread across much of Europe, North Africa, Caucasus, the Canary Islands, and the Middle East as far east as Turkmenistan.

These plants are remarkable in that they successfully reproduce through pseudocopulation, that is, their flowers mimic female insects to such a degree that amorous males are fooled into mating with the flowers, thereby pollinating them. There are many natural hybrids.