Hymenachne Explained

Hymenachne is a genus of widespread wetlands plants that is in the grass family. They are commonly known as marsh grasses.[1] They are distributed in tropical and subtropical regions of Asia, the Americas, and the Pacific Islands.[2] A species from the Americas, H. amplexicaulis, is well known in other parts of the world as an introduced and invasive species.

Hymenachne is similar to genus Sacciolepis. Both were formerly considered part of Panicum.[3]

Hymenachne aquatic plants frequently found in marshes and other wet habitats. Their stems are spongy with aerenchyma tissue.[3] The longest stems can reach 4 meters. They are perennial, sometimes with rhizomes. The leaves are linear or lance-shaped.[4] The inflorescence is usually a cylindrical, spike-shaped panicle, rarely with branches.[3]

Diversity

Accepted species[5] [6]
formerly included[5] see Panicum Pennisetum Sacciolepis

Notes and References

  1. https://www.itis.gov/servlet/SingleRpt/SingleRpt?search_topic=TSN&search_value=41777 Hymenachne.
  2. 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. Telopea 13(1-2), 105-14.
  3. http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=116069 Hymenachne.
  4. http://www.kew.org/data/grasses-db/www/gen00306.htm Hymenachne.
  5. http://apps.kew.org/wcsp/namedetail.do?name_id=419658 Kew World Checklist of Selected Plant Families
  6. https://www.ars-grin.gov/cgi-bin/npgs/html/splist.pl?5927 GRIN Species Records of Hymenachne.