Hymenachne amplexicaulis is occasionally found growing in wet pastures from the central peninsula to Collier county. It is native to the West Indies and blooms. hymenachne, west indian marsh grass, water straw grass, trompetilla or trumpet grass, canutillo (Colombia); dal (dhal) grass, bamboo grass (India); carrizo chico . Hymenachne (Hymenachne amplexicaulis) is an invasive plant in Queensland. Hymenachne is a restricted plant under Queensland legislation.

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The environmental threats posed to wetlands are severe, as it forms dense stands that reduce plant diversity and available habitat for native animals. Australian Weeds Committee, ; Silva et al. Plants were found in amplexicqulis an approximately 2 hectare storm amplexicalis pond [ Anderson FSU ] and were eradicated with herbicides within the year G. Seed has been produced commercially in large artificial ponds, from which the water can be pumped out prior to harvest by adapted machinery.

Hymenachne control | Agriculture and Food

Hymenachne amplexicaulis west indian marsh grass ; stem-clasping leaf base with long, ciliate hairs along the margin of the clasping lobe. Plant Ecology, 1: Leaf blades flat, to 35 cm 14 in long and to 4 cm 1. Flora of Taiwan, 2nd edition, 5. Distribution Top of page Native distribution H.

Appearance Robust perennial grass from stolons. The Gardens’ Bulletin Singapore, 20 4: The Austalian native H. Blissidaea herbivore of West Indian marsh grass. Hymenachne amplexicaulis west indian marsh grass ; upper leaves of emergent stems appear flat and triangular in silhouette. Johns Marsh and Reedy Creek Swamp — both expansive open marsh in distinct drainage systems.


A tetrazolium staining technique had been presented for viability determination in seed of H. Museum of Natural History. North Florida occurrence eradicated.

Southward in Victoria, South Australia and Tasmania, its importation, sale, distribution, and introduction as a contaminant in freely moving commodities is prohibited Australian Government, Dept. University of California Press. Title Shape and form. Panicle densely flowered; cylindrical; cm long; cm wide. Ischnodemus variegatus Signoreta true bug Hemiptera belonging to the family Blissidae, is native to Central and South America and appears be host specific to H.

Karyological studies in South American grasses. Temperature-dependent development, survival, and potential distribution of Ischnodemus variegatus Hemiptera: Displacing native maidencane communities; colonizing, and becoming difficult to control along drainage canals of south central Florida.

Diet of capybara Hydrochaeris hydrochaeris Rodentia: Application of glyphosate followed by burning of dead tops can give significant control, providing mature seed has not dropped before treatment. The corruption of an indigenous genotype is a direct and measurable loss to global biodiversity, and while the hgmenachne of a new hybrid species may be considered an addition to the global tally, its conservation significance ranks very low.

Social Impact Top of page Large, monospecific stands of H. Panicum amplexicaule Rudge Hymenachne acutigluma auct. Biological Control, 55 3: New populations have meanwhile appeared within the highly constructed rice growing area, one outside of cultivation, in an abandoned field converting to marsh J. The paddy bug Oebalus poecilus and O.

The Australian Government, Dept. Leaf-blade base lobed and clasping.


They are mostly hairless i. Kew Databases, Herbarium Catalogue. Eradication is not emphasized here as its attainment is unlikely. Singapore Botanical Gardens, pp. Care should also be taken that herbicides used pose hymenachnf environmental threat, and are registered for use in the intended manner. Taxonomic Tree Top of page Domain: Where the leaf blade meets the leaf sheath there is a small membranous flap i.

Mallett K; Orchard AE, Hymenachne Hymenachne amplexicaulis also blocks waterways, potentially causing flooding and threatening drinking water, and blocks drainage and irrigation channels in cropping areas.

On seasonally flooded floodplains, it needs over 1 m of water during the wet hymeachne to persist. It is native ampexicaulis the West Indies and blooms in the fall Wunderlin, Nees Panicum amplexicaule Rudge Panicum amplexicaule Rudge var. An undescribed Delphacidae species found naturally occurring on H. Eichhornia crassipes, Salvinia molesta, Paspalum repens, Oxycarum cubense and Urochloa subquadripara Pitelli et al. Hymenachne Hymenachne amplexicaulis may be confused with the closely related native species Hymenachne acutigluma.


Byinfested land had increased over tenfold to 11, ha, mostly the result of escapes from plantings Australian Weeds Committee, Sheldon Navie seed-heads Photo: Soon after new invasions were documented all along the Queensland coastal zone and were identified in the Northern Territory.

From Wikipedia, the free encyclopedia. Olive hymenachne Hymenachne amplexicaulis Rudge Nees strategic plan