211 



251 Gentianaceae : Intimately connected with the Loganiaceae. 



252 Apocynaceae 2) : Closely related to the Asclepiadaceae. The family 

 is allied to the Gentianaceaa and Rubiaceae in the inferior ovary and in the 

 stipules ; and to the Loganiaceae in the bicollateral bundles ; and is especially 

 close to the woody genera of the latter family in the decussate opposite 

 leaves, in the reduced stipules, in the aestivation of the corolla, in the 

 insertion of the stamens, and in the structure of the ovary. 



253 Asclepiadacese S) : Very closely related to the Apocynaceae. 



Series XLVII. Tubiflorw 



254 Convolvulaceae 4) : In some particular characters, to which we have 

 already referred, tin's family is undoubtedly connected with the Malvaceae. It 

 is also related to the Borraginaceae, Hydrophyllacese and Polernoniaceae in the 

 aestivation of the corolla, in the inflorescence and in the trirnerous ovary ; to 

 the Solauaceae in the presence of inner phloem in the vascular bundles, in the 

 dimerous ovary, and in the berry-like fruit (which occurs, in Erycibe and 

 Argyreia of the Couvolvulaceae) ; to the Verbenaceae and to the Acanthaceae, in 

 the regular flowers, and in the definite number of the ovules. 



255 PolemoniaceaB 5) : Very closely related to the Convolvulaceae. But, 

 in the 3 -celled ovary, in the more or less connate styles, in the tubiform 

 -corolla with stamens attached slightly at its base, the family is very near 

 the Fouquieraceae. 



256 Hy drophyllaceae Near the Gentianaceae, Borraginaceae, and 

 Scrophulariacete (BENTH.-HooK. Gen. Plant. II. p. 825). 



257 Borraginaceas 7) : This family somewhat agrees with the Hydrophyl- 

 laceae in the ovules, in the inflorescence, and in the hairy leaves. On the other 

 hand, it is closely related to the Verbenaceae and to the Labiatae in having 

 eremi. The Cordioidete of the Borraginaceae are connected with the Convol- 

 vulaceae in the folded cotyledons. 



1) Nnt. Pfl.-fam. IV. 2, p. 63. 



3) 1. c. IV. 2, p. 204. 



5) 1. c. IV. 3, a, p. 44. 



7) 1. c. IV. 3, a, p. 89. 



2) 1. c. IV. 2, p. 118. 



4) Nat. Pfl.-fam. IV. 3, a, p. 11. 



6) Nat. Pfl.-fam. IV. 3, a, p. 59. 



