194 



dimerous ovary, iu the numerous seeds, in the free styles and in the auatro- 

 pous ovules. But in other respects, it is comparable with the Caryophyllacese. 



115 Hydrostachyaceae : Related to the Podostemonacese. 



116 Crassnlaceas 1} : This family is somewhat related to the Elatinaceee 

 the isomerous flowers and in the habit, as can be seen in Tiflcea aquatica L. 

 in which is at present referred to the Crassulacete, but is closely related to 

 Elatinc. In general, it is connected with the Saxifragacete more closely than 

 with any other family. 



117 Cephalotacese :) : 2sear the Saxifragacere and Crassulacese. 



118 Saxifragaceae l} : Certainly quite close to the Crassulacefe and Cuno- 

 niace^e, and then, to the Hamamelidaceee and Rosacese. But, the family has 

 some relation to the Trochodendracese in the separate carpels, in the p3rigy- 

 nous insertion and in the small embryo ; then, to the Koaberliniaceae in the 

 placenta with numerous seeds in many series. Further, the resemblance of 

 tliis family to the Begoniacese can not be denied, as there are agreements in 

 both families, in the perigynous insertion, in the parietal placenta, in the 

 small seeds, in the dehiscence of the fruit, and in the shape of the leaves. 



119 PittoSporaeeaB 45 ' R- BROWN compares this family with the Celastra- 

 ceae and Rhamnace?e. DE CANDOLLE places it between the Polygalacere and the 

 CaryophyUace?e, wliile RICHARD and SCHNITZLEIN insist upon the existence of 

 a relation between it and the Caryophyllacese. ENDLICHER and EICHLEE con- 

 sider it better to bring it back again near the Celastraceae ; but BEXTHAM and 

 HOOKER class it with the Polygalaceas, Trernandracese and Vochysiacete in the 

 Polygalinefe. VAN TIEGHEM compares it with the Uinbelliferre and Ai-ahacese 

 in the peculiar distribution of resin -ducts in the root and in the formation of 

 lateral roots. BAILLON says that there is no absolute difference between the 

 floral structure of the Pittosporacese and that of the Saxifragacepe. Some re- 

 lations seem to exist between the Pittosporaceee and the Hamamehdacefe in 

 the presence of resin -ducts. 



120 Brunelliaceaa 55 : Somewhat near the Cephalotaceee, this family is 



1) -Sat. m-fam. Ill 2, a, p. 28. 2) 1. c. III. 2, a, p. 40. 



3) 1. c. III. 2, a, p. 45. 4) Sat. Pfl.-fam. III. 2, a, p. 1C8. 



5) Nat. Pfl.-fam. Sacht. p. 184. 



