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Muehlenbeckia florulenta
''Muehlenbeckia florulenta'', commonly known as Tangled Lignum or often simply Lignum, is a plant native to inland Australia. It is associated with wetland habitats, especially those in arid and semiarid regions subject to cycles of intermittent flooding and drying out. The Wiradjuri name for the plant is Gweeargal.〔
==Description==
Lignum is a perennial, monoecious shrub, growing to 2.5 m in height, with its multitude of thin, intertwined and tangled branches and branchlets forming dense thickets to the exclusion of other species. Its thin, narrow leaves are 15–70 mm long and 2–10 mm wide.〔New South Wales Flora Online.〕 The grey-green stems often end in a sharp point. The flowers are small and cream to yellowish, solitary or clustered along the branchlets and occurring through most of the year. The fruit is top-shaped, dry, and about 5 mm long.〔
Lignum often appears leafless as the leaves are produced on younger growth but soon die off, especially in dry conditions. New leaves and shoots are rapidly produced in response to rainfall or flooding.〔Wetland Plants.〕 The plant has a very deep root system, penetrating the soil to at least 3 m in depth. It is highly tolerant of salinity and drought and may be used as an indicator of dryland soil salinity.〔Victorian Resources Online.〕 Because of its densely tangled growth habit, it provides protected breeding habitat for native wildlife such as waterbirds, though it can also provide refuge for pest species such as feral pigs, foxes and rabbits.〔
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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