Microlaena stipoides

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Microlaena stipoides
Starr 020702-9004 Ehrharta stipoides.jpg
Microlaena stipoides syn ehrharta stipoides.jpg
Scientific classification OOjs UI icon edit-ltr.svg
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Monocots
Clade: Commelinids
Order: Poales
Family: Poaceae
Subfamily: Oryzoideae
Tribe: Ehrharteae
Genus: Microlaena
R.Br.
Species:
M. stipoides
Binomial name
Microlaena stipoides
Synonyms [1] [2]
  • Ehrharta stipoidesLabill.
  • Microlaena gunniiHook.f.

Microlaena stipoides, synonym Ehrharta stipoides, is a species of grass. It occurs naturally in all states of Australia as well as in New Zealand, Papua New Guinea, Indonesia and the Philippines. [3] [4] It has also been introduced into Hawaii and Reunion Island and has been reported as invasive in both. [4] [5] Common names used include weeping grass, weeping rice grass and weeping meadow grass. [6]

Contents

P. Martin, writing in 2004, commented: [7] "Although the generic name Microlaena is strongly defended by Australasian agrostologists (e.g. Wheeler et al. 2002) many European authors treat it as a section of the genus Ehrharta, so that information on the species in question will be found in these sources under the name Ehrharta stipoidesLabill. (e.g. Clayton and Renvoize, 1986)." He refers to the species as Microlaena stipoides.

The Australian Plant Name Index and Australian Plant Census list this scientific name Microlaena stipoides(Labill.) R.Br. as currently accepted and under it is subsumed the synonym of Ehrharta stipoidesLabill.. [1] [2]

Description

Microlaena stipoides grows to a height of approximately 0.7 metres and produces delicate, drooping stalks of spikelets. [3] The naked caryopses (grains) are similar in shape to rice grains but smaller, approximately 5 mm long, with a mass that varies widely, ranging from 1 mg to 7 mg. [5] [6] [8] The grass grows best in acidic soils and is drought- and frost-tolerant. [9] In Australia it is found in areas of medium to high rainfall (above 600 mm per annum) and the leaves normally remain green all year. [10]

The 1889 book 'The Useful Native Plants of Australia’ records that common names included "Weeping Grass" and "Meadow Rice Grass." It also states that it is "A perennial grass, which keeps beautifully green all through the year. For this reason its growth for pasturage should be encouraged, particularly as it will live on poor soil, provided it be damp. It is considered nearly as valuable as Kangaroo grass, and in the cool season more so. Mr. Bacchus finds it to bear overstocking better than any other native grass, and to maintain a close turf. It is valued in New Zealand. High testimony of the value of this grass is also given by Ranken, after experiments extending over many years. It, however, does not always freely seed." [11]

Uses

Microlaena stipoides produces nutritious pasture for grazing livestock with productivity of approximately 2 to 7 tonnes per hectare and digestibility of approximately 60–70%. [8] [9] [12] Its drought-tolerance has led to an increasing interest in its use for turf to replace exotic species, and it is being researched as a perennial grain crop. [6] [7] [13] [14] The grains are high in protein and small-scale commercial production for human consumption has commenced. [10]

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References

  1. 1 2 3 "Microlaena%". Australian Plant Name Index (APNI), Integrated Botanical Information System (IBIS) database (listing by % wildcard matching of all taxa relevant to Australia). Centre for Plant Biodiversity Research, Australian Government. Retrieved 19 June 2013.
  2. 1 2 "Ehrharta stipoidesLabill.". Australian Plant Name Index (APNI), IBIS database. Centre for Plant Biodiversity Research, Australian Government. Retrieved 19 June 2013.
  3. 1 2 Jacobs, Surrey W. L.; Hastings, S. M. (July 2001). "Microlaena stipoides (Labill.) R.Br. – New South Wales Flora Online". PlantNET - The Plant Information Network System. 2.0. Sydney, Australia: The Royal Botanic Gardens and Domain Trust. Retrieved 19 June 2013.
  4. 1 2 Microlaena stipoides. Pacific Island Ecosystems at Risk, Hawaiian Ecosystems at Risk. Retrieved 2010-04-03.
  5. 1 2 PLANTS profile for Microlaena stipoides (weeping grass). USDA PLANTS. Retrieved 2010-04-03.
  6. 1 2 3 Davies, C. L.; Waugh, D.L.; Lefroy, E.C. (2005). "Variation in seed yield and its components in the Australian native grass Microlaena stipoides as a guide to its potential as a perennial grain crop". Australian Journal of Agricultural Research. 56 (3): 309–316. doi:10.1071/ar04204 . Retrieved 19 June 2013.
  7. 1 2 Martin, P. M. The potential of native grasses for the use of managed turf. 4th International Crop Science Congress, 2004. Retrieved 2010-04-03.
  8. 1 2 Microlaena stipoides (Weeping Grass). Archived 2012-03-05 at the Wayback Machine Taroom Shire Council Land Care. Retrieved 2010-04-03.
  9. 1 2 Microlaena stipoides (Microlaena or Weeping grass) Rangelands|Grassed Up. Australia: NSW Department of Primary Industries. Retrieved 19 June 2013
  10. 1 2 Davies, C. L., D. L. Waugh and E. C. Lefroy. Perennial Grain Crops for High Water Use - The case for Microlaena stipoides. Archived 2012-03-02 at the Wayback Machine A report for the Rural Industries Research and Development Corporation, RIRDC Publication No 05/024. February, 2005.
  11. J. H. Maiden (1889). The useful native plants of Australia : Including Tasmania. Turner and Henderson, Sydney.
  12. Magcalemacandog, D. B.; Whalley, R. D. B. (1991). "Distribution of Microlaena stipoides and its association with introduced perennial grasses in a permanent pasture on the northern tablelands of New South Wales". Australian Journal of Botany. 39 (3): 295–303. doi:10.1071/bt9910295 . Retrieved 19 June 2013.
  13. Microlaena stipoides, a native grass. Powerhouse Museum, Sydney, Australia. Retrieved 2010-04-03.
  14. Malory, S., R. J. Henry, F. M. Shapter, and I. Chivers. Domestication of a wild relative of rice, Microlaena stipoides. Plant Genomics and Beyond. Evry, France. 5–8 July 2009.