Imperata

Imperata is a small but widespread genus of tropical and subtropical grasses, commonly known as satintails.[1][2]

Satintails
Imperata cylindrica
Scientific classification e
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Order: Poales
Family: Poaceae
Subfamily: Panicoideae
Supertribe: Andropogonodae
Tribe: Andropogoneae
Subtribe: Saccharinae
Genus: Imperata
Cirillo
Type species
Imperata arundinacea

Satintail grass species are perennial rhizomatous herbs with solid, erect stems and silky inflorescences. The best known species is Imperata cylindrica, which is recognized as a devastating noxious weed in many places and cultivated as an ornamental plant in others.[3][4][5][6]

The genus is named after Ferrante Imperato, a Renaissance apothecary who lived in Naples in the late-16th and early-17th centuries. His collection included a herbarium.[7][8][9]

Species

As of November 2022, Plants of the World Online accepted the following species:[10]

  • Imperata brasiliensis - South + Central America, West Indies, southern Mexico
  • Imperata brevifolia - southwestern US (CA AZ NV UT NM TX)
  • Imperata cheesemanii - Kermadec Islands (part of New Zealand)
  • Imperata condensata - Argentina, Chile
  • Imperata conferta - plumegrass, kunay grass - Southeast Asia, Papuasia, Micronesia
  • Imperata contracta - guayanilla - South + Central America, West Indies, southern Mexico
  • Imperata cylindrica - bladygrass, cogongrass, speargrass, silver-spike - Africa, southern Europe, southwestern Asia; introduced in central and eastern Asia, North America, various islands
  • Imperata flavida - Hainan Province in China
  • Imperata minutiflora - Ecuador, Peru, Bolivia, Brazil, Argentina
  • Imperata parodii - southern Chile
  • Imperata tenuis - Bolivia, Peru, Ecuador, Brazil, Corrientes Province of Argentina

Formerly Included

Various species have been relocated to other genera, such as Cinna, Lagurus, Miscanthus Saccharum, and Tripidium:[11]

References
  1. Cirillo, Domenico Maria Leone 1792. Plantarum Rariorum Regni Neapolitani 2: 26
  2. Clayton, W.D., Harman, K.T. & Williamson, H. (2006). World Grass Species - Synonymy database. The Board of Trustees of the Royal Botanic Gardens, Kew.
  3. Flora of China Vol. 22 Page 583 白茅属 bai mao shu Imperata Cirillo, Pl. Rar. Neapol. 2: 26. 1792.
  4. Jepson Manual Treatment
  5. United States Department of Agriculture Plants Profile
  6. Grass Manual Genus Profile Archived 2011-06-11 at the Wayback Machine
  7. Quattrocchi, Umberto (2006). CRC World Dictionary of Grasses. CRC Press. p. 1105. ISBN 978-1-4200-0322-2.
  8. Flora of Pakistan
  9. Atlas of Living Australia
  10. Kew World Checklist of Selected Plant Families
  11. Imperata


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