220 The Eoihamstecl Grass Experiments. 



but the following is worth reproducing. "To quote an 

 extreme case in illustration of the difference in the character 

 of the herbage, and of the difference in the degree of 

 difficulty of separation accordingly, it may be mentioned that 

 whilst a sample of 201b. from one plot in 1872 only occupied 

 from four to five days in botanical analysis, a sample of equal 

 weight from another plot n* the same year occupied thirty 



The total number of different species of plants that have 

 been detected on the plots is 89; of these, 20 are gramineous, 

 10 are leguminous, and the remaining fifty-nine belong to 

 miscellaneous orders. The 89 species comprise 59 dicoty- 

 ledons, 26 monocotyledons, and 4 cryptogams, three of which 

 are mosses (Hypnum) ; they are arranged under 63 genera 

 and 22 orders. Of the miscellaneous plants there are 13 

 species of Compositse, 6 of Rosacese, 5 each of Ranunculaceae 

 and Umbelliferse, 3 each of Labiatae, Polygonacese, Liliacese, 

 Caryophyllese, Scrophulariacese, and Musci, 2 each of 

 Rubiacese and Plantaginese, and 1 each of Cruciferse, Hype- 

 ricinese, Dipsacese, Primulacese, Orchidacese, Juncacese, 

 Cyperaeese, and Filices. Six genera only were represented 

 by more than one species ; these were Eanunculus, 5 species, 

 Rumex 3, and Potentilla, Gralium, Leontodon, and Veronica, 

 2 each. The 20 species of grass comprise 14 genera; Festuca 

 is represented by 4 species, Avena by 3, Poa by 2, and 

 Anthoxanthum, Alopecurus, Phleum, Agrostis, Aira, Holcus, 

 Briza, Dactylis, Cynosurus, Bromus, and Lolium by 1 each. 

 The fact that the four genera whose names are here italicised 

 were only represented by one species each serves to indicate 

 somewhat the nature of the land. Had it been wet or 

 marshy in parts, Alopecurus geniculatus might have been 

 looked for as well as Alopecurus pratensis. Had not the 

 plots been quite away from hedgerows, several species of 

 Bromus might have accompanied Bromus mollis, whilst 

 Brachypodium sylvaticum might also have been looked for. 

 The total absence of Glyceria further shows the fairly dry 



