211 
251 Gentianaceew”: Intimately connected with the Loganiaces. 
252 Apocynacer”: Closely related to the Asclepiadacex. The family 
is allied to the Gentianacese and Rubiacew in the inferior ovary and in the 
stipules ; and to the Loganiaces 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 estivation- of the corolla, in the 
insertion of the stamens, and in the structure of the ovary. 
253 Asclepiadacee”®: Very closely related to the Apocynaces. 
Series XLVIL. Tubiflorce 
254 Convolvulacee”: In some particular characters, to which we have 
already referred, this family is undoubtedly connected with the Malvaces. It 
is also related to the Borraginaces, Hydrophyllaces and Polemoniaces in the 
sestivation of the corolla, in the inflorescence and in the trimerous ovary; to 
the Solanaceze in the presence of inner phloém in the vascular bundles, in the 
dimerous ovary, and in the berry-like fruit (which occurs in Erycibe and 
Argyreia of the Convolvulacess); to the Verbenacese and to the Acanthacex, in 
the regular flowers, and in the definite number of the ovules. 
255 Polemoniacee™: Very closely related to the Convolvulacex. But, 
in the 3-celled ovary, in the more or less connate styles, in the tubiform 
corollawith stamens attached slightly at its base, the family is very near 
the Fouquieracez. 
256 Hydrophyllacee”: Near the Gentianacex, Borraginacex, and 
Scrophulariacese (BenTu.~Hoox. Gen. Plant. I. p. 825). 
257 Borraginacee”: This family somewhat agrees with the Hydrophyl- 
lacece in the ovules, in the inflorescence, and in the hairy leaves. On ‘the other 
hand, it is closely related to the Verbenaceze and to the Labiate in having 
eremi. The Cordioidee of the Borraginaceze are connected with the Convol- 
vulaceze in the folded cotyledons. 
1) Nat. Pé.-fam. IV.—2, p. 60. 2) Lo. IV2 p. 118. 
3) Loe. IV.—2 p. 204. 4) Nat. Pafam. IV.—3, a, p. 11. 
5) Lo IV.—3, a, p. 44. * 6) Nat. Pé.-fam. IV.—3, a, p. 59. 
7) 1. ¢ IV.—8, a, p. 80. 
