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Poa annua L.
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D'Arcy, W. G. 1987. Flora of Panama. Checklist and Index. Part 1: The introduction and checklist. Monogr. Syst. Bot. Missouri Bot. Gard. 17: v–xxx, 1–328.
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Swallen, J. R. 1955. Gramineae. En: Standley, P.C. & Steyermark, J.A. (eds.), Flora of Guatemala - Part II. Fieldiana, Bot. 24(2): i–ix, 1–390.
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Hitchcock, A. S. 1951. Man. Grasses U.S. (ed. 2) 1–1051. U.S. Department of Agriculture, Washington, D.C.
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Hitchcock, A. S. 1927. The grasses of Ecuador, Peru, and Bolivia. Contr. U.S. Natl. Herb. 24(8): 291–556.
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Espejo Serna, M. A., A. R. López-Ferrari & J. Valdés-Reyna. 2000. Poaceae. Monocot. Mexic. Sinopsis Floríst. 10: 7–236 [and index].
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Poa annua subsp. exilis (Tomm. ex Freyn) Asch. & Graebn.
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