192 CONCLUDING SUMMARY. 



52. CACTALBS. Flowers dichlamydeous, polypetalous ; placentae parietal; embryo with little or no 



albumen. 39 Gen. ; 900 Sp. 



Natural Orders. -284. Homaliacese, or Homaliads. 285. Loasacese, or Loasads. 286. Cno- 

 taceae, or Indian Figs. 



53. GBOSSALES. Flowers dichlamydeous, polypetalous ; seeds numerous, minute ; embryo small, 



lying in a large quantity of albumen. 22 Gen. ; 208 Sp. 



Natural Orders. 287. Grossulariacese, or Currantworts. 288. Escalloniaceae, or Escal- 

 loniads. 289. Philadelphaceae, or Syringas. 290. Barringtoniaceos, or Barringtoniads. 



64. CIKCHONALES. Flowers dichlamydeous, monopetalous ; embryo minute, lying in a large quantity 



of albumen. 305 Gen. ; 3243 Sp. 



Natural Orders. 291. Vacciniaceae, or Cranberries. 292. Columelliaceae, or Columel- 

 liads. 293. Cinchonaceae, or Cinchonads. 294. Caprifoliaceae, or Caprifoils. 295. 

 Galiacese, or Stellates. 



65. UMBELLALES. Flowers dichlamydeous, polypetalous ; seeds solitary, large; embryo small, lying 



in a large quantity of albumen. 322 Gen. ; 1780 Sp. 



Natural Orders. 296. Apiaceae, or Umbellifers. 297. Araliaceae, or Ivyworts. 298. Corna- 

 ceae, or Cornels. 299. Hamamelidaceae, or Witch-Hazels. 300. Bruniaceae, or Bruniads. 



56. ASARALES. Flowers monocblamydeous ; embryo small, lying in a large quantity of albumen. 

 49 Gen. ; 652 Sp. 



Natural Orders. 301. Santalacese, or Sandalworts. 302. Loranthaceas, or Loranths. 

 303. Aristolochiaceae, or Birthworts. 



Had our space permitted, we should now proceed to consider the various alliances 

 and natural orders in detail, so as to lay before our readers a complete account of the 

 whole kingdom of plants ; but we must content ourselves with the extended scheme 

 which we have now inserted. 



"We have but little to add to the directions which we gave for the prosecution of the 

 study of classification under the Linnsean system ; but it is important to bear in mind, 

 that under the natural arrangement the stamens and pistils play a subordinate part, 

 and are only accounted as a portion of the whole constitution of the plant. But 

 very minute and constant attention is directed to the ovule and the seed ; so that a 

 pocket magnifier of moderate power is at all times necessary. 



KDWAED SMITH, M.D 



