Poaceae with silica phytoliths, which discourage grazing animals; some, such as sword grass, are sharp enough to cut human skin. A membranous appendage or fringe of hairs called the ligule lies at the junction between sheath and blade, preventing water or insects from penetrating into the sheath. Flowers of Poaceae are characteristically arranged in spikelets, each having one or more florets. The spikelets are further grouped into panicles or spikes. The part of the spikelet that bears the florets is called the rachilla. A spikelet consists of two (or sometimes fewer) bracts at the base, called glumes, followed by one or
Less-is-better effect right next to each other, the effect disappears, as people see the true value of both," states one source. "It's just the gifts in isolation that give people a flipped sense of happiness and gratitude." Theoretical causes of the less-is-better effect include: The effect has several practical applications. If a conference speaker thinks that about 50 people will attend his talk, but wants to make it look popular, he should hold it in a small room, with 50 or fewer seats, than a large room with over 100 seats. A chocolatier is better off selling a box containing 24 pieces