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Classification System: APG IV

Superregnum: Eukaryota
Regnum: Plantae
Cladus: Angiosperms
Cladus: Monocots
Cladus: Commelinids
Ordo: Poales

Familia: Poaceae
Subfamilia: Chloridoideae
Tribus: Cynodonteae
Subtribus: Eleusininae
Genus: Eustachys
Species: E. bahiensis – E. brevipila – E. calvescens – E. caribaea – E. distichophylla – E. floridana – E. glauca – E. neglecta – E. paranensis – E. paspaloides – E. petraea – E. petrea – E. retusa – E. swalleniana – E. tenera – E. uliginosa
Name

Eustachys Desv., Nouv. Bull. Sci. Soc. Philom. Paris 2: 188 (1810)

Type species: Eustachys petraea (Sw.) Desv., Nouv. Bull. Sci. Soc. Philom. Paris 2: 189 (1810)

Synonyms

Homotypic
Schultesia Spreng., Pl. Min. Cogn. Pug. 2: 17 (1815), nom. superfl.
Heterotypic
Chloroides Fisch. ex Regel, Index Seminum (LE) 1863: 28 (1863).

References

Desvaux, N.A. (1810) Nouveau Bulletin des Sciences, publié par la Société Philomatique de Paris 2: 188.
Govaerts, R. et al. 2013. Eustachys in World Checklist of Selected Plant Families. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2013 Nov. 10. Reference page.
Simon, B.K., Clayton, W.D., Harman, K.T., Vorontsova, M., Brake, I., Healy, D. & Alfonso, Y. 2013. GrassWorld, Eustachys. Published on the internet. Accessed: 2013 Nov. 10.
Tropicos.org 2013. Eustachys. Missouri Botanical Garden. Published on the internet. Accessed: 2013 Nov. 10.
International Plant Names Index. 2013. Eustachys. Published online. Accessed: 10 Nov. 2013.

Eustachys (fan grass or fingergrass) is a genus of tropical and subtropical plants in the grass family. It is native primarily to warmer parts of the Americas, with a few species in Africa and Asia.[3][4][5]
Species

Species include:[2][6][7][8]

Eustachys bahiensis (Steud.) Herter - Brazil (Bahia, Paraná, Pernambuco), Bolivia (Chuquisaca, Santa Cruz), Uruguay, Argentina
Eustachys brevipila (Roseng. & Izag.) Caro & E.A.Sánchez - Uruguay, Argentina (Corrientes, Entre Rios), Brazil (Mato Grosso do Sul, Rio Grande do Sul)
Eustachys calvescens (Hack.) Caro & E.A.Sánchez - Uruguay, Argentina (Misiones), Paraguay, Brazil (Mato Grosso, Paraná, Santa Catarina)
Eustachys caribaea (Spreng.) Herter - Uruguay, Argentina, Paraguay, Brazil, Bolivia; naturalized in United States (TX LA MS GA)
Eustachys distichophylla Nees - Uruguay, Argentina, Chile, Paraguay, Brazil, Bolivia, Peru; naturalized in United States (CA AL GA FL)
Eustachys floridana Chapm. - United States (AL GA FL)
Eustachys glauca Chapm. - United States (MS AL GA FL SC NC)
Eustachys neglecta (Nash) Nash - United States (AL TX FL)
Eustachys paranensis A.M.Molina - Brazil (Paraná)
Eustachys paspaloides (Vahl) Lanza & Mattei - Oman, Yemen, eastern + southern Africa from Eritrea to Cape Province
Eustachys petraea (Sw.) Desv. - United States (TX LA MS AL GA FL SC NC PA NY), Mexico, West Indies (Bahamas, Greater + Lesser Antilles), Central + South America; naturalized on various Pacific Islands (Hawaii, Midway, Carolines, Marianas, Kiribati)
Eustachys retusa (Lag.) Kunth - Uruguay, Argentina, Paraguay, Brazil, Bolivia; naturalized in United States (TX FL GA SC NY)
Eustachys swalleniana A.M.Molina - Brazil (Paraná, Rio Grande do Sul), Uruguay (Cerro Largo)
Eustachys tenera (J.S.Presl) A.Camus - New Guinea, southeast Asia, southern China incl Taiwan
Eustachys uliginosa (Hack.) Herter - Uruguay, Argentina (Corrientes, Entre Rios, Misiones), Paraguay, Brazil (Paraná, Santa Catarina, Rio Grande do Sul), Bolivia (Santa Cruz)

Open florets on the extended (green) rachilla of an E. paspaloides spikelet, showing the white anthers below, and feathery stigmas above.

Former species

Some species formerly under Eustachys are under the genera Chloris or Ornithogalum, they include:[2]

Eustachys gayana - Chloris gayana
Eustachys polystachya - Chloris submutica
Eustachys submutica - Chloris submutica
Eustachys latifolia - Ornithogalum arabicum
Eustachys pyramidale - Ornithogalum pyramidale

References

The Genus Eustachys was first named and described in "Nouveau Bulletin des Sciences par la Société Philomatique de Paris 2: 188. 1810". "Plant Name Details for Poaceae Eustachys' Desv". IPNI. Retrieved May 2, 2011. "Type Information: Type Name: E. petraea (Sw.) Desv. ('petraeus') (Chloris petraea Sw."
Kew World Checklist of Selected Plant Families
Govaerts, R.H.A. (2011). World checklist of selected plant families published update. Facilitated by the Trustees of the Royal Botanic Gardens, Kew
Grassbase - The World Online Grass Flora
Molina, A. M. 1996. Revisión taxonómica del género Eustachys Desv. (Poaceae: Chloridoideae, Cynodonteae) de Sudamérica. Candollea 51(1): 225–272
The Plant List search for Eustachys
Jørgensen, P. M., M. H. Nee & S. G. Beck. 2014. Catálogo de las plantas vasculares de Bolivia. 127(1–2): i–viii, 1–1744. In P. M. Jørgensen, M. H. Nee & S. G. Beck (eds.) Catálogo de las plantas vasculares de Bolivia, Monographs in systematic botany from the Missouri Botanical Garden. Missouri Botanical Garden Press, St. Louis
Biota of North America Program 2013 county distribution maps

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