Gramineae, spikelets: A1, Digitaria sanguinalis; A2, paired spikelets of D. sanguinalis; B1, Paspalum dilatatum, edge-on; B2, the same face-on; C, Eriochloa pseudoacrotricha; E, Leersia hexandra; F, Echinochloa crus-galli; G, Tragus australianus; H, Sacciolepis indica; I, Rhynchelytrum repens; J, Hordeum leporinium; K, Amphipogan strictus;. L, Bothriochloa macro; M, Holcus lanatus; N, Andropogon virginicus. Symbols: g = solitary glume; g1 = lower glume; g2 = upper glume; s = sterile lemma; l = lemma; p = palea.
