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Agave amica

Agave amica, formerly Polianthes tuberosa, the tuberose, is a perennial plant in the family Asparagaceae, subfamily Agavoideae, extracts of which are used as a note in perfumery. Now widely grown as an ornamental plant, the species was originally native to Mexico.
The tuberose is herbaceous, growing from underground tubers or tuberous roots. It produces offsets. The leaves are a dull green and about 11.5 ft (3050 cm) long and up to 0.5 in (13 mm) wide at the base. They are slightly succulent. The inflorescence is a spike, reaching up to 3 ft (1 m) high, with pure white waxy flowers. The flowers are tubular, with a tube up to 2.5 in (6 cm) long, separating into six flaring segments (tepals) at the end, and are strongly fragrant. There are six stamens, inserted into the tube of the flower, and a three-part stigma.
The species was first described for science by Carl Linnaeus in 1753, as Polianthes tuberosa. In 1790, Friedrich Kasimir Medikus moved the species to the genus Tuberosa as Tuberosa amica. Both morphological and molecular phylogenetic studies have shown that Polianthes is embedded within the larger genus Agave, and the genus is now included in a broadly circumscribed Agave. Two incorrect attempts were made name the species when transferred to Agave. In 1999, Joachim Thiede and Urs Eggli published the name "Agave tuberosa". However, Philip Miller had published this name in 1768, for the species now called Furcraea tuberosa, so it cannot be used again, and Thiede and Eggli's name is illegitimate. In 2001, Thiede and Eggli published a replacement name (nomen novum), "Agave polianthes". However, since Medikus's Tuberosa amica is considered to be a synonym of Polianthes tuberosa, its epithet is the second oldest and according to the International Code of Nomenclature for algae, fungi, and plants should be used when the older epithet is unavailable. Hence Thiede and Eggli's second name is superfluous, and the correct name for the species within Agave is Agave amica, as was explained by Thiede and Rafael Govaerts when they published this combination in 2017.
The overwhelming fragrance of the tuberose has been distilled for use in perfumery since the 17th century, when the flower was first transported to Europe. French Queen Marie Antoinette used a perfume called Sillage de la Reine, also called Parfum de Trianon, containing tuberose, orange blossom, sandalwood, jasmine, iris and cedar. It remains a popular floral note for perfumes, either in stand-alone Tuberose fragrances or mixed floral scents, but it generally must be used in moderation because the essence is overpowering and can become sickly to the wearer.
The most popular variety is a double-flowered cultivar known as 'The Pearl' that grows to 2.5 ft (76 cm) tall and features pale pink buds opening to cream. The more common variety is called 'Mexican Single', which, although not as decorative as 'The Pearl', makes for a longer lasting cut flower.
Tuberoses were especially beloved by Louis XIV of France, who had them planted in the hundreds in the flower beds of the Grand Trianon at Versailles so that the scent was overpowering. They were grown in clay pots and planted directly in the ground; to keep the perfume consistently strong new specimens were rotated in, sometimes daily.