72 



The Vegetation of the 



Chester, Fa. ; New- 

 castle, Del. 



Compositse 130 



Cyperacea; 83 



Graminefe 78 



Legaminosse 40 



Rosacea; 33 



Filices 32 



Orchidace?e 29 



Labiat?e 28 



Ericaceae 26 



Scrophulariacse 23 



502 



Arkansas. 



Compositse 164 



Gramineaj 78 



Legaminosre 77 



Cyperaceai 46 



Labiatte 35 



Scropliulariacese 28 



liosaceee 27 



Filices 25 



Umbellifeipe 24 



Cruciferae 21 



525 



Illinois. 



Compositfe 132 



Cyperacese 92 



Graminea; 75 



Leguminosai 49 



Rosacea* 36 



Scrophulariacete ... 28 



LabiatiE 27 



Ranunculacea' 26 



Filices 25 



Liliacete 23 



513 



Michigan. 



Compositje 116 



Cyperaceai 100 



Graniineae 73 



Rosacea; 46 



Leguminosa; 38 



Orchidacea? 35 



Scrophulariacea3 ... 28 



Ranunculacea? 26 



Filices 25 



Labiatse 25 



512 



Louisiana. 



Compositfe 172 



Leguminosse 70 



Graminese 66 



Cyperaceae 58 



Scrophulariacese 29 



Rosacese 23 



Umbelliferae 20 



Labiatse 19 



Onagracese 19 



Orchidacese 18 



494 



Peoria. 



Compositai 158 



Cyperacete 90 



GramineiTG 84 



Leguminosa; 45 



Rosacere 30 



Labiata; 27 



Ranunculacese 26 



Scrophulariaceae ... 26 



Umbellifera; 20 



Filices 20 



526 



Wisconsin. 



Compositse 123 



Cyperacese 90 



Graminese 72 



Rosaqefe 40 



Leguminosse 38 



Filices 30 



Orchidaca? 26 



Scrophulariaceae.. ... 26 



Ranunculacese 26 



Liliacese 24 



495 



Colorado. 



Compositse 161 



Leguminosse 82 



GraminesB 78 



Cyperacese 53 



Scrophulariaceae ... 42 



Rosacea? 38 



Ranunculacese 37 



Crucif erae 30 



Saxifragaceae 28 



Polygonaceae 28 



577 



Washington, B. C. 



Compositic 130 



Cyperacete 89 



Gramineae 85 



Leguminosa? 45 



Rosaceae 34 



Labiatae 31 



Filices 28 



Scrophulariaceae ... 27 



Ericaceae 25 



Ranunculacea? 24 



518 



The relative number o£ Compositae increases toAvard the south and 

 west, and only in Massachusetts and New York they do not take the first 

 place; the Gramineae take nearly throughout the third place. The num- 

 ber of Legurainosa3 increases southward in a great proportion; while the 

 Rosacea^ prevail in the north and decrease southward. The Ericaceae, so 

 numerous in the east, are little represented in the west; the Labiatae 

 increase southward, the Scrophulariaceae westward; the Orchidaceae and 

 Filices take a higher position in rank in the north than in the south; the 

 Ranunculacese are most represented in Colorado, and only little in the 

 south. The Liliacea? have only in Ohio, Illinois and Wisconsin a place 

 amongst the ten prevalent orders. Umbellifera? and Cruciferae increase 



