Fig. 28. Trichomes of grasses. 1, Leersia lentkularis, from palet; 2. 3, Andropogon scoparim, from 

 under surface of'leaf; 4, Kragrostis major, f cm ligule; 5, Panlcum capillareh, from slieath; '>, Panicum 

 sanguinaJe, from sheath ; 7, Spartina cunosur-oides, from edge of leaf; s, Poa pratensi>t. from tl jwer; v, Bro- 

 mvi8 asper. from under surface if leaf; i", Bronvis ciliatus. from sheath; 11, B. mollis, from under surface 

 of leaf; 12, Andropogon provincia'.is, from rachls; 13, Bouteloua racemosa Lag, from leaf-bladj. i King / 



