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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New growth of cv. Nees Panicum amplexicaule Rudge Panicum amplexicaule Rudge var. Florets Basal sterile florets barren; without significant palea. Leaf blades flat, to 35 cm 14 in long and to 4 cm 1.

Distribution Top of page Native distribution H. Displacing native maidencane communities; colonizing, and becoming difficult to control along drainage canals of south central Florida. Please consider upgrading your browser to the latest version or installing a new browser.

Hymenachne control | Agriculture and Food

Hymenachne Amplxicaulis amplexicaulis is a Weed of National Significance and apmlexicaulis regarded as one of the worst weeds in Australia because of its invasiveness, potential for spread, economic and environmental impacts. Plant Ecology, 2: Florida Noxious Weed List. Creeping, sprawling and heavily branched populations root in the substrate, with lower culms decumbent and submersed and upper stems erect and emergent. Editorial Committee of the Flora of Taiwan, Hymenachne amplexicaulis is occasionally found growing in wet pastures from the central peninsula to Collier county.

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Fact sheet – Hymenachne amplexicaulis

Plants appear to obtain nitrogen from a non-symbiotic association with nitrogen-fixing bacteria or cyanobacteria around the roots and submerged stems, reducing the reliance on fertilisers.

A revised Flora of Malaya, Vol. Built on data for climate, distribution, and connectivity of drainage systems, hymenacne models were consistent in identifying a number of catchments of high invasion risk or spread in northern, central and southern Australia to which the directing of management priority has been suggested Wearne et al.

The leaves are linear or lance-shaped. Telopea 13 The two are similar in growth habit and nearly alike in floral features. Means of Movement and Dispersal Top of page Natural dispersal Aamplexicaulis and stem fragments may be dispersed by water movement. Seeds prove the highest risk for long distance and new introductions, whether through biotic, climactic, or human mediated means.

Stolon removed from wetland area. Diet of capybara Hydrochaeris hydrochaeris Rodentia: Hymenachhneat least hectares in Australia were infested.

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Flower Anthers 3; 1. Rainfall Regime Top of page Uniform. Olive in wetland of tropical Australia.

The potential loss of natural wildlife resources e. Imazapyr and glyphosate are broad-spectrum herbicides, and should be used with care.

Center for Aquatic and Invasive Plants

The imbibition of seeds without glumes, for six hours, with subsequent immersion in a solution of tetrazolium 0. Both were formerly considered part of Panicum.

In the Fitzroy River backwaters hymeachne central Queensland, Australia, the replacement of extensive zones of floating-attached and submergent native vegetation by monoculture stands of H. Native to or naturalised in: It is spreading throughout the tropical wetlands of northern Australia and is most common in the coastal districts of northern Queensland and the Northern Territory.

Physiology and phenology Introduced USA range: