Poaceae Barnhart
Bull.Torrey Bot.Club 22:7 (1895)
Notodanthonia Zotov
New Zealand J.Bot. 1:104, 122 (1963)
Notodanthonia racemosa (R.Br.) Zotov
New Zealand J.Bot. 1:121 (1963)
Notodanthonia racemosa (R.Br.) Zotov var. racemosa
Notodanthonia semiannularis (Labill.) Zotov
New Zealand J.Bot. 1:116 (1963)
Notodanthonia setacea (R.Br.) Veldkamp
Taxon 29:297 (1980)
Notodanthonia setacea var. breviseta (Vickery) Veldkamp
Taxon 29:297 (1980)
Notodanthonia setacea (R.Br.) Veldkamp var. setacea
Oloptum Röser & Hamasha
Pl.Syst.Evol. 298:365 (2012)
Oloptum miliaceum (L.) Röser & Hamasha
Pl.Syst.Evol. 298:365 (2012)
Ophiuros C.F.Gaertn.
Fruct.Sem.Pl. p3, t. 181, fig. 3. (1791)
Ophiuros exaltatus (L.) Kuntze
Canegrass
Revis.Gen.Pl. 2:780 (1891)
Oplismenus P.Beauv.
Fl.Oware 2:14 (1810)
Oplismenus hirtellus (L.) P.Beauv.
Ess.Agrostogr. 54,170 (1812)
Oryza L.
Sp.Pl. [Linnaeus] 1:333 (1753)
Oryza australiensis Domin
Australian Wild Rice
Biblioth.Bot. 85:333-335 (1915)
Oryza meridionalis N.Q.Ng
Bot.J.Linn.Soc. 82:328,329, Fig. 1 (1981)
Oryza rufipogon Griff.
Red Rice
Not.Pl.Asiat. 3:55 (1851)
Oryza sativa L.
Rice
Sp.Pl. [Linnaeus] 1:333 (1753)
Oryzopsis Michx.
Fl.Bor.-Amer. 1:51, Tab.9 (1803)
Oryzopsis miliacea (L.) Asch. & Schult.
Many Flowered Millet
Mém.Inst.Égypt 2:169 (1887)
Oxychloris Lazarides
Nuytsia 5(1):283 (1984)