_Poa maritima_ (maritime). _P. distans_ (sandy pastures and wastes near sea). _Elymus arenarius_ (coasts). _Psamma arenaria_ (coasts). _Poa bulbosa_ (waste places in S.E. of England). _Agropyrum junceum_ (coasts). _Hordeum maritimum_ (S. and E. coast). _Phleum arenarium_ (coasts). RUDERAL OR VAGABOND GRASSES. Waste places, walls, road-sides and dry sandy situations. _Molinia cærulea_ (wet, heathy moors, woods and waste places). _Festuca Myurus_ (waste places, walls, road-sides). _F. ovina_ (hilly pastures and especially dry, rarely moist situations). _Aira caryophyllea_ (sandy and hilly pastures). _Aira præcox_ (sandy and hilly pastures). _Poa distans_ (sandy wastes near the sea). _P. compressa_ (dry, barren, waste ground). _P. annua_ (cultivated and waste lands and fields). _Agropyrum repens_ (fields and waste places). _Hordeum murinum_ (waste places and road-sides). _Holcus lanatus_ (meadow, pasture, and waste lands). _H. mollis_ (same--rarer). _Alopecurus agrestis_ (waste lands and roads in S. of England). _Lolium perenne_ (meadows, pastures and waste places). _L. temulentum_ (fields and waste places, not common). _Bromus sterilis_ (on way-sides, &c.). _B. arvensis_ (cultivated and waste meadows and pastures). _Poa rigida_ (dry, rocky places). It is also often useful to know whether a grass is rare or local, especially for the purpose we have in view, and I have therefore drawn up the following list of rare, local or introduced foreign grasses either not noticed at all, or only referred to incidentally in this work. In many cases these introduced foreign grasses have sprung up from seeds brought over in cargoes of hay, wool, and other products and packing materials, which in part accounts for their occurrence only near certain sea-ports, manufacturing towns and so forth. Such plants are frequently termed ballast plants. Foreign plants are also introduced in seed, as mixtures or impurities, and frequently escape from corn-fields &c.