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Tulipa polychroma
The polychrome tulip (''Tulipa polychroma'' Stapf) is of flowering plant in the tulip genus ''Tulipa'' (''biflores'' group sensu Hall), family Liliaceae. It is sometimes classified as a subspecies of ''Tulipa biflora'' and was also considered a synonym for ''T. buhseana'' Boiss.〔B. Gilliat-Smith/W. B. Turrill, On the Flora of the Nearer East: IX. A Contribution to Our Knowledge of the Flora of Azerbaidjan N. Persia. Bulletin of Miscellaneous Information (Royal Gardens, Kew) 10, 1930, 490. Stable URL: http://www.jstor.org/stable/4111523〕
== Description ==
''Tulipa polychroma'' is a perennial bulbous plant that grows between 6 and 17 cm tall. The bulb is small and has a leathery tunic, with woolly hairs on the inside, which are normally visible at the upper end of the bulb.
It has one to two straplike deeply channelled dark green leaves that are longer than the stem. Normally only a single flower appears, but sometimes double flowers are found as well. The bud is upright, the six tepals are between 3,0 to 4,5 cm long. The outer tepals are between 0.3 and 1.5 cm wide, the inner tepals are wider, up to 2.5 cm. The tepals are oval or slightly pointed. The cup-shaped flowers are pure white, with a bright yellow centre that takes up about a third of the flower. The outside of the outer tepals is light grey-green, the back of the inner tepals are very faintly striped down the middle in bluish green. The tips of both inner and outer tepals can have a reddish tinge. Filaments and anthers are yellow.
It flowers in late February, in England it is normally the first of the species tulips to flower.〔the description is based on Richard Wilford, Tulips, Species and hybrids for the Gardener (Portland, Timber Press 2006), Anna Pavord, The Tulip (London, Bloomsbury 1999) and Eckehardt J. Jäger, Friedrich Ebel, Peter Hanelt, Gerd K. Müller (eds.), Rothmaler Exkursionsflora von Deutschland. Band 5: Krautige Zier- und Nutzpflanzen (Spektrum Akademischer Verlag, Berlin Heidelberg 2008)〕
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