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. 2013 Dec 5;4:251–260. doi: 10.2147/OAJSM.S52417

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© 2013 Orchard et al. This work is published by Dove Medical Press Limited, and licensed under Creative Commons Attribution – Non Commercial (unported, v3.0) License

The full terms of the License are available at http://creativecommons.org/licenses/by-nc/3.0/. Non-commercial uses of the work are permitted without any further permission from Dove Medical Press Limited, provided the work is properly attributed.

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Annual winter grass (Poa annua).

Notes: Cool-season grass species. Relative lack of thatch in this figure compared to those in Figures 3–6.