146 



fruits and iu the oblique symmetry of the flowers ; the Malpighiaceae , to the 

 BalsaraiuaceB3, in the oblique symmetry of the flowers ; the Trigoniacese^, to 

 the Balsamiuace33, Hipp3crateaceae and Sapindacaae ; the Vochysiacese, to the 

 Balsarainaceaa" ; and finally the Euphorbiaceae' , to the Einpetraceae (EICHLEK) 

 and to the Celastraceae^, as can be seen in a certain degree of agree- 

 ment between Dt't/petes (Euph.) and Elceodendrcm (Celast.). The relation 

 of the Geraniales to the Parietales is shown clearly in the accord 

 of the Linacea3 n) with the Ternstroamiacene, in that of the Siinarubaceee with the 

 Dipterocarpaceaa 7 ^ in the presence of a ring of secretory - canals in the medulla- 

 crown, and in the greater or less resemblance of the Malpighiacese and the 

 Ancistrocladaceaa. 8 ' Their alliance to the Myrtifloraa is indicated by the 

 resemblance of the Vochysiaceae 9) and the Oenotheraceaa (DE CANDOLLE, 

 WARMING, EICHLER), and by tliat of the Callitrichace?e lcl) and the Halorr- 

 hagacese' (DE CANDOLLE, BENTH.-HOOK.). With the Pihamuales, the connec- 

 tion is found in the agreement of the Geraniaceae and the K-hamnaceae, as 

 can be seen in the floral diagram of Geranium and Rhamnus^. Their 

 relation to the Sympstalae is rather apparent, as is shown in the gamopstalous 

 genera Stcplianfjpodium and Tapura (which is even zygomorphous) of the 

 Dichapetalace8e 13:> , and in the fruit and single coated ovules of the Callitri- 

 chaceae 145 . Finally, their relation to the Coniferae should be considered ; the 

 presence of the similar resin - ducts in the Burseraceae 15 - 1 on the one hand and 

 in the Pinaceae on the other is so striking that we are compelled to take this 

 character as representing one of their natural relations. 



Secondly, we shah 1 consider the natural relations which the Sapindales 

 bear to other series and see whether it is really natural to place this series, 

 in any case, together with the Geraniales, before the Malvales and the 

 Parietales. Its relations to the Julianiales, Santalales, Rauales, Geraniales, 



1) Nat. Pfl.-fam. HI 5, p. 388. 



3) 1. c. III. 5, p. 388. 



5) 1. c. IH.-5, p. 198. 



7) 1. c. Ill 6, p. 252. 



9) 1. c. III. 4, p. 315. 



11) 1. c. ITL 7, p. 230. 



13) Nat. Pfl.-fam. Ill 4, p. 347. 



15) Nat. Pfl.-fam. III. 4, p. 333. 



2) 1. c. HI. 4, p. ? 



4) 1. c. Ill 5, p. 13. 



C) 1. c. III. 4, p. 30. 



8) Nat, Pfl.-fam. III. 6, p. 27G. 



10) 1. c. II f. 5, p. 122. 



12) WETTSTEIN, E. R. 1. c. p. 613. 



14) 1. c. ill. 5, p. 122. 



