Hymenachne

Classification System: APG IV

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

Familia: Poaceae
Subfamilia: Panicoideae
Tribus: Paspaleae
Subtribus: Otachyriinae
Genus: Hymenachne
Species: H. amplexicaulis – H. assamica – H. aurita – H. condensata – H. donacifolia – H. felliana – H. grumosa – H. panduranganii – H. patens – H. pernambucensis – H. wombaliensis
Name

Hymenachne P.Beauv., Ess. Agrostogr.: 48 (1812)

Type species: Hymenachne amplexicaulis (Rudge) Nees in C.F.P.von Martius, Fl. Bras. Enum. Pl. 2: 276 (1829)

Synonyms

Heterotypic
Dallwatsonia B.K.Simon, Austrobaileya 3: 678. (1992)

References

Palisot de Beauvois, A.M.F.J. 1812. Essai d'une Nouvelle Agrostographie 48.
Govaerts, R. et al. 2019. Hymenachne in World Checklist of Selected Plant Families. The Board of Trustees of the Royal Botanic Gardens, Kew. Published on the internet. Accessed: 2019 Dec. 8. Reference page.
Simon, B.K., Clayton, W.D., Harman, K.T., Vorontsova, M., Brake, I., Healy, D. & Alfonso, Y. 2013. GrassWorld, Hymenachne. Published on the internet. Accessed: 2013 Nov. 30.
Tropicos.org 2013. Hymenachne. Missouri Botanical Garden. Published on the internet. Accessed: 2013 Nov. 30.
International Plant Names Index. 2013. Hymenachne. Published online. Accessed: 30 Nov. 2013.

Hymenachne is a genus of widespread wetlands plants that is in the grass family. They may be known commonly as marsh grasses.[4] They are distributed in tropical and subtropical regions of Asia, the Americas, and the Pacific Islands.[5] A species from the Americas, H. amplexicaulis, is well known in other parts of the world as an introduced and invasive species.[6]

Hymenachne is similar to genus Sacciolepis. Both were formerly considered part of Panicum.[7]

Hymenachne aquatic plants frequently found in marshes and other wet habitats. Their stems are spongy with aerenchyma tissue.[7] The longest stems can reach 4 meters. They are perennial, sometimes with rhizomes. The leaves are linear or lance-shaped.[8] The inflorescence is usually a cylindrical, spike-shaped panicle, rarely with branches.[7]
Diversity

Accepted species[9][10]

Hymenachne amplexicaulis – West Indian marsh grass, olive hymenachne - West Indies; Latin America from Mexico to Uruguay; naturalized in Australia, parts of Asia, Florida
Hymenachne assamica - China, Assam, Myanmar, Thailand
Hymenachne donacifolia - Cuba, Puerto Rico, Trinidad; Latin America from Honduras to Paraguay
Hymenachne grumosa - Paraguay, Uruguay, Brazil, Argentina
Hymenachne patens - China (Anhui, Fujian, Jiangxi)
Hymenachne pernambucense - Paraguay, Uruguay, Brazil, Argentina
Hymenachne wombaliensis - Zaïre

formerly included[9]

see Panicum Pennisetum Sacciolepis

Hymenachne aurita - Panicum auritum
Hymenachne boiviniana - Panicum boivinianum
Hymenachne campestris - Sacciolepis vilvoides
Hymenachne condensata - Panicum condensatum
Hymenachne fluviatilis - Sacciolepis vilvoides
Hymenachne frondescens - Panicum stoloniferum
Hymenachne indica - Sacciolepis indica
Hymenachne insulicola - Panicum auritum
Hymenachne interrupta - Sacciolepis interrupta
Hymenachne leptostachya - Panicum pulchellum
Hymenachne montana - Pennisetum montanum
Hymenachne myosuroides - Sacciolepis myosuroides
Hymenachne myosurus - Sacciolepis myuros
Hymenachne myuros - Sacciolepis myuros
Hymenachne phalarioides - Sacciolepis indica
Hymenachne phleiformis - Sacciolepis myuros
Hymenachne polymorpha - Panicum auritum
Hymenachne striata - Sacciolepis striata

References

Palisot de Beauvois, Ambroise Marie François Joseph. 1812. Essai d'une Nouvelle Agrostographie pages 48-49 in Latin
Palisot de Beauvois, Ambroise Marie François Joseph. 1812. Essai d'une Nouvelle Agrostographie plate X (10), figure VIII (8 a-h) at upper right; line drawings of Hymenachne sp.; figure captions on caption page 8
Tropicos, Hymenachne P. Beauv.
Hymenachne. Integrated Taxonomic Information System (ITIS).
Clarkson, J. R., et al. (2011). A report of hybridisation in Hymenachne (Poaceae, Panicoideae) with description of Hymenachne × calamitosa, a new species of hybrid origin from tropical Australia. Archived 2013-09-25 at the Wayback Machine Telopea 13(1-2), 105-14.
"Hymenachne amplexicaulis". Germplasm Resources Information Network (GRIN). Agricultural Research Service (ARS), United States Department of Agriculture (USDA). Retrieved 21 January 2018.
Hymenachne. Flora of China.
Hymenachne. Grassbase - The World Online Grass Flora.
Kew World Checklist of Selected Plant Families
GRIN Species Records of Hymenachne. Germplasm Resources Information Network (GRIN)