185 



Series XVHI. Leitneriales 



65 Leitneriaceae^-* : This family may be in some degree connected with 

 the Hamamelidacese by the presence of the resin-ducts in the medulla-sheath. 



Series XIX. tTuglandales 



66 Juglandaceae '^ : Closely related to the JuHaniacese and to the Myri- 

 cacese. Also related to the Fagacese, in the arrangement of the flowers. 

 Further, the family is comparable with the Anacardiaceae in the exstipulate 

 imparipinnate leaves. 



Series XX. Batidales 



57 Batidaceae ^^ : Related to the Amarantacese and PhytoLiccacese, and 

 also to tlie Chenopodiaceae. 



Series XXI. tTidlaniales 



58 Julianiaceae ^^ : See statement imder the Julianiales in the review of 

 and critical remarks on ENGr^B's principles and his system in the present papar. 



Series XXII. Fagales 



59 Betulaceae ^^ : Closely related to the Fagacese in the inflorescence 

 and in the pai'ietal ovules. Also to the Myricacese and Juglandacese. 



60 Fagaceae^^: Intimately connected with the Betulaceae, also with 

 the Myiicaceae, Juglandacese and Juhaniacese. 



Series XXIII. Urticales 



61 XJlmaceae : This and the two following famili^ are closely inter- 

 i"elated. 



62 Moraceae'^ : As above. 



63 Urticaceae : As above. 



Series XXIV. Proteales 



64 Proteaceae ^ : Somewhat approach the Thymelseacege and Lauraceae. 



1) Nat. Pfl.-fam. Nacht. I. p. 117. 2) Nat. Pfl.-fam. HI.— 1, p. 22. 



3) ISfat. Pfl.-fam. in.— 1, a, p. 120; Nachtr. ni. p. 105. 



4) HEMSI.BY, W. B. — On the Julianiacefe, in Phil. Trans. Roy. Soc Lond. Vol. CXCIX., (B. 

 253), pp. 190-193. 



5) Nat. Pfl.-fam. III.— 1, p. 41. 6) 1. c. IH.— 1, p. 52. 



7) 1. c. m.— 1, p. 69. 



8) Benth.-Hookeb, Genera Plantanun. IIL p. 165. 



