424 X. GENERAL REMARKS. 



Cruciferce and CyperacetB may be contrasted against 

 Scrophulariaceo! and Juncaceee, as instances of such dif- 

 ferences; the former having an average of only 36 repeti- 

 tions for a species ; the latter with an average of 46. 

 The subjoined enumeration of the orders is intended for 

 comparison with that before given on pages 401 and 403. 

 Here, the orders are placed in a series to correspond 

 with the average frequency of their included species. 

 There, they were placed in correspondence with the 

 number of their included species. 



84. Oxalidaceae. Oxalis Acetosella, tLe only native. 



80. Portulaceas. Montia fontana, the same. 



78. Planlaginaceae. Araliaceae. 



77. Urticaceae. Four species. 



72. Ilicaceae. Ilex Aquifolium only. 



66. Dipsaceae. Jasminaceae. 



65. Resedaceae. Two species. 



63. Tamaceae. Tamus communis only. 



62. Oelastraceae. Euonymus europseus only. 



60. Valerianaceae. Five species. 



69. Hypericaceae. Trilliaceae, or Paris quadrifolia. 



67. Solanaceae. Convolvulaceae. 



66. Verbenaceae, Verbena officinalis only. 

 65. Capvifoliaceae. Six species. 



54. Papaveraceae. Empetraceae, or Empetrum nigrum. 

 53. Geraniaceae. Fourteen species. 

 62. Polygonaceae. Typhaceae. 



61. Droseraceae. Three species of Drosera. 



60. Lamiaceas. Pistiaceae. Cucurbitaceaa. Aceracese. 



49. Equisetaceae. Malvaceae. Lythraceae. 



48. Rubiaceae. Primulaceae. Ouagiaceae. 



47. Ranunculaceae. Haloriagiaceae. Linaceae. 



46. Scrophulariaceae. Filices. Juncaceae. Alismacese. Rhamnaceae. 



44. Gramina. Boraginaceae. Violaceae. NymphaDaceae. 



43. Lycopodiaceae. Furaariaceae. Araceap. 



42. Umbellifeiae. Callitrichaceae. 



41. CompositaB. Caryopliyllaceap. Melanthiaceae. 



