211 



251 Gentianaceae ^^ •■ Intimately counected with the Loganiaceae. 



252 Apocynaceae "^ : Closely related to the Asclepiadaceae. Tlie family 

 is allied to the Gentianaoese and Rubiaceffi in the inferior ovary and in the 

 stipules ; and to the Loganiacese 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 sti*uctm'e of the ovary. 



253 AsclepiadaceaB.^^ : Very closely related to the Apocynaceae. 



Series XLVII. Tnbiflorce 



254 Convolvulaceae^^ •* In some pai-ticular characters, to which we have 

 txh-eady refeired, tliis family is imdoubtedly connected with the Malvacese. It 

 is also related to the BoiTaginaceae, Hydrophyllacege and Polemoniacese in the 

 festivation of the coroUa, in the inflorescence and in the trimerous ovary ; to 

 tlie Solanaceae in the presence of inner pliloem in the vascular bundles, in the 

 dimerous ovaiy, and in tlie beny-Hke fi-uit (wliich occm-s in Erycibe and 

 Argyreia of the Convolvulacese) ; to the VerbenacefB and to the Acanthaceae, iu 

 the regular flowei-s, and in the definite number of the ovules. 



255 Polemonlaceae"^: Veryclosely related to the Convolvulacese. But, 

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

 coroUawith stamens attached shghtly at its base, the family is very near 

 the Fouquieracejie. 



256 Hydrophyllacese*''' •' Near the Gentianacese, Bon-aginaceae, and 

 Scrophulariace?e (Benth.-Hook, Gen. Plant, 11. p. 825), 



257 Borraginaceae''' : This family somewhat agi-ees with the Hydrophyl- 

 lacefB in the ovules, in the infloi-escence, and in the hairy leaves. On the other 

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

 ei-emi. The Cordioidese of tlie Bonaginacese are connected with the Convol- 

 vulacese in the folded cotyledons. 



1) Nat. Pfl.-fam. IV.— 2, p. 60. 



3) 1. c. IV.— 2, p. 204. 



5) 1. c. IV.— 3, a, p. 44. 



7) 1. c. IV.— 3, a, p. 80. 



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. 



