Hedychium coronarium, the white garland-lily or white ginger lily, is a perennial flowering plant in the ginger family Zingiberaceae, native to the Eastern Himalayas of India (Sikkim and Tripura), Bangladesh, Nepal and Bhutan, through northernmost Myanmar and Thailand, southern China (Yunnan, Sichuan, Hunan, Guangxi and Guangdong) to Taiwan in the East. It is typically found growing in the forest understory, where the pseudostems arising from rhizomes below ground may reach 1-3m in height. In its native environment flowering occurs between August and December.
It is cultivated in warm temperate and subtropical regions of the world as an ornamental. In China it is cultivated for use in medicine and production of aromatic oil, due to the strong characteristic fragrance of the flowers, said to be reminiscent of jasmine. It is evergreen in warmer climates, but deciduous in mild winter temperate regions of North America and Europe.
Hedychium coronarium is the national flower of Cuba, where it is known as mariposa (literally "butterfly") due to its shape. Women used to adorn themselves with these fragrant flowers in Spanish colonial times; because of the intricate structure of the inflorescence, women hid and carried secret messages important to the independence cause under it. The plant has become naturalized in the cool rainy mountains in Sierra del Rosario, Pinar del Rio Province in the west, the Escambray Mountains in the center of the island, and in the Sierra Maestra in the very east of it.
Beyond its native range H. coronarium may be invasive in shallow water systems, along streams and in waterlogged areas. Once established, it is difficult to control due to vegetative reproduction through the underground spread of rhizomes. It was introduced in Brazil in the era of slavery, said to have been brought to the country by African slaves who used its leaves as mattresses, and is now considered naturalised in the states of Rio de Janeiro (where it is classed as invasive), Bahia and Espirito Santo. This species was first introduced as an ornamental to Hawaii around 1888 by Chinese immigrants, and is now considered a serious invader in mesic to wet areas of Maui and Hawaii island. Additionally, it is invasive in South Africa, where it is a declared weed, and propagation of plant material is considered prohibited. It is also invasive in New Caledonia.
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- "Hedychium coronarium". World Checklist of Selected Plant Families (WCSP). Royal Botanic Gardens, Kew. Retrieved 6 January 2017.
- "Hedychium coronarium". Natural Resources Conservation Service PLANTS Database. USDA. Retrieved 6 January 2017.
- "Hedychium coronarium". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved 6 January 2017.
- "Hedychium coronarium in Flora of China @ efloras.org". www.efloras.org. Retrieved 2017-02-15.
- "Hedychium coronarium (white butterfly ginger lily)". www.cabi.org. Retrieved 2017-02-15.
- "National Flower". Ministry of Foreign Affairs of the Republic of Cuba. Archived from the original on 13 April 2014. Retrieved 6 January 2017.
- "Floral biology of Hedychium coronarium Koen. (Zingiberaceae)". Revista Brasileira de Horticultura Ornamental. 2007-01-01. ISSN 1414-039X.
- "Impact of Alien Plants on Hawai'i's Native Biota". 1998-01-01. Cite journal requires
- "Ornamental plants as Invasive Aliens: Problems and Solutions in Kruger National Park, South Africa". 2008-01-01. Cite journal requires
- Hequet, Vanessa (2009). Les espèces exotiques envahissantes de Nouvelle-Calédonie (PDF) (in French). p. 17.
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