Tulip
Tulips are spring-blooming perennial herbaceous bulbiferous geophytes in the Tulipa genus. Their flowers are usually large, showy, and brightly coloured, generally red, orange, pink, yellow, or white. They often have a different coloured blotch at the base of the tepals, internally. Because of a degree of variability within the populations and a long history of cultivation, classification has been complex and controversial. The tulip is a member of the lily family, Liliaceae, along with 14 other genera, where it is most closely related to Amana, Erythronium, and Gagea in the tribe Lilieae.
There are about 75 species, and these are divided among four subgenera. The name "tulip" is thought to be derived from a Persian word for turban, which it may have been thought to resemble by those who discovered it. Tulips were originally found in a band stretching from Southern Europe to Central Asia, but since the seventeenth century have become widely naturalised and cultivated. In their natural state, they are adapted to steppes and mountainous areas with temperate climates. Flowering in the spring, they become dormant in the summer once the flowers and leaves die back, emerging above ground as a shoot from the underground bulb in early spring.
Growing wild over much of the Near East and Central Asia, tulips had probably been cultivated in Persia from the 10th century. By the 15th century, tulips were among the most prized flowers; becoming the symbol of the later Ottomans. Tulips were cultivated in Byzantine Constantinople as early as 1055 but they did not come to the attention of Northern Europeans until the sixteenth century, when Northern European diplomats to the Ottoman court observed and reported on them. They were rapidly introduced into Northern Europe and became the subject of an investment bubble during the Dutch tulip mania of 1634–1637. Tulips were frequently depicted in Dutch Golden Age paintings, and have become associated with the Netherlands, the major producer for world markets, ever since.
In the seventeenth-century Netherlands, during the time of the tulip mania, an infection of tulip bulbs by the tulip breaking virus created variegated patterns in the tulip flowers that were much admired and valued. While truly broken tulips are not cultivated anymore, the closest available specimens today are part of the group known as the Rembrandts – so named because Rembrandt painted some of the most admired breaks of his time.
Breeding programmes have produced thousands of hybrid and cultivars in addition to the original species. They are popular throughout the world, both as ornamental garden plants and as cut flowers.
Description
Tulips are perennial herbaceous bulbiferous geophytes that bloom in spring and die back after flowering to an underground storage bulb. A bulb can be as much as in diameter or as small as.Tulip stems have few leaves. Larger species tend to have multiple leaves. Plants typically have two to six leaves, some species up to 12. The tulip's leaf is cauline, strap-shaped, with a waxy coating, and the leaves are alternate, diminishing in size the further up the stem. These fleshy blades are often bluish-green in colour. The bulbs are truncated basally and elongated towards the apex. They are covered by a protective tunic which can be glabrous or hairy inside. Depending on the species, tulip leaves are typically long, but in some species reach over.
Flowers
The tulip's flowers are usually large and are actinomorphic and hermaphrodite and female, generally erect, or more rarely pendulous, and are arranged more usually as a single terminal flower, or when pluriflor as two to three, but up to four, flowers on the end of a floriferous stem, which is single arising from amongst the basal leaf rosette.In structure, the flower is generally cup or star-shaped. As with other members of Liliaceae the perianth is undifferentiated and biseriate, formed from six free caducous tepals arranged into two separate whorls of three parts each. The two whorls represent three petals and three sepals but are termed tepals because they are nearly identical. The tepals are usually petaloid, being brightly coloured, but each whorl may be different, or have different coloured blotches at their bases, forming darker colouration on the interior surface. The inner petals have a small, delicate cleft at the top, while the sturdier outer ones form uninterrupted ovals.
The flowers have six distinct, basifixed introrse stamens arranged in two whorls of three, which vary in length and may be glabrous or hairy. The filaments are shorter than the tepals and dilated towards their base. The style is short or absent and each stigma has three distinct lobes, and the ovaries are superior, with three chambers.
Colours
Tulip flowers come in a wide variety of colours - reds, yellows, purples, white - except pure blue, and do not have nectaries. The colour of a tulip is formed from two pigments working in concert; a base colour that is always yellow or white, and a second anthocyanin colour. The mix of these two hues determines the visible unitary colour. The breaking of flowers occurs when a virus suppresses anthocyanin production and the base colour is exposed as a streak.While tulips can be bred for many of colours, black tulips have historically been difficult to achieve. The Queen of the Night tulip is close to black, though it is a dark and glossy maroonish purple. The first truly black tulip was bred in 1986 by a Dutch flower grower in Bovenkarspel, Netherlands. It was created by cross-breeding two deep purple tulips, the Queen of the Night and Wienerwald tulips.
The "Semper Augustus" was the most expensive tulip during the 17th-century tulip mania. After seeing the tulip in the garden of Dr. Adriaen Pauw, a director of the new East India Company, Nicolas van Wassenaer wrote in 1624 that "The colour is white, with Carmine on a blue base, and with an unbroken flame right to the top". With limited specimens in existence at the time and most owned by Pauw, his refusal to sell any flowers, despite wildly escalating offers, is believed by some to have sparked the mania.
Fruit
The tulip's fruit is a globose or ellipsoid capsule with a leathery covering and an ellipsoid to globe shape. Each capsule contains numerous flat, disc-shaped seeds in two rows per chamber. These light to dark brown seeds have very thin seed coats and endosperm that do not normally fill the entire seed.Phytochemistry
is an anthocyanin found in tulips. It is the 3-rutinoside of delphinidin. Tuliposides and tulipalins can also be found in tulips and are responsible for allergies. Tulipalin A, or α-methylene-γ-butyrolactone, is a common allergen, generated by hydrolysis of the glucoside tuliposide A. It induces a dermatitis that is mostly occupational and affects tulip bulb sorters and florists who cut the stems and leaves. Tulipanin A and B are toxic to horses, cats and dogs.Fragrance
The great majority of tulips, both species and cultivars, have no discernable scent, but a few of both are scented to a degree, and Anna Pavord describes T. hungarica as "strongly scented", and among cultivars, some such as "Monte Carlo" and "Brown Sugar" are "scented", and "Creme Upstar" "fragrant".Taxonomy
It was published by Carl Linnaeus in 1753 with Tulipa gesneriana as the type species. Tulipa is a genus of the lily family, Liliaceae, once one of the largest families of monocots, but which molecular phylogenetics has reduced to a monophyletic grouping with only 15 genera. Within Liliaceae, Tulipa is placed within Lilioideae, one of three subfamilies, with two tribes. Tribe Lilieae includes seven other genera in addition to Tulipa.Subdivision
The genus, which includes about 75 species, is divided into four subgenera.- Clusianae
- Orithyia
- Tulipa
- ''Eriostemones''
Etymology
Ogier Ghiselin de Busbecq stated that the "Turks" used the word tulipan to describe the flower. Extensive speculation has tried to understand why he would state this, given that the Turkish word for tulip is lale. It is from this speculation that tulipan being a translation error referring to turbans is derived. This etymology has been challenged and makes no assumptions about possible errors. At no point does Busbecq state this was the word used in Turkey, he simply states it was used by the "Turks". On his way to Constantinople Busbecq states he travelled through Hungary and used Hungarian guides. Until recent times "Turk" was a common term when referring to Hungarians. The word tulipan is in fact the Hungarian word for tulip. As long as one recognizes "Turk" as a reference to Hungarians, no amount of speculation is required to reconcile the word's origin or form. Busbecq may have been simply repeating the word used by his "Turk/Hungarian" guides.
The Hungarian word tulipan may be adopted from an Indo-Aryan reference to the tulip as a symbol of resurrection, tala meaning "bottom or underworld" and pAna meaning "defence". Prior to arriving in Europe the Hungarians, and other Finno-Ugrians, embraced the Indo-Iranian cult of the dead, Yima/Yama, and would have been familiar with all of its symbols including the tulip.