318 Mr. Griffith on the Root- Parasites referred to Rhizanthege, 



With Pilostyles, granting that plant to belong to the family, it is not likely 

 to be confounded. 



§ 3. CYTINEiB. 



I have nothing to offer on the affinities of this family, to which the two 

 succeeding genera are referred. Mr. Brown, in a note on the female flower 

 and fruit of Rafflesia in the ' Annales des Sciences Naturelles,' n. s. p. 369, is 

 represented as being of opinion that both Hydnora and Cytinus may be grouped 

 in the same family with Rafflesia and Brugmansia (Bl.), and that this family 

 is intimately allied to Asarinece. The same great authority had previously 

 pointed out the affinities of Rafflesiacece with Nepenthece. 



The difference in the direction of the nuclei of the ovula in Cytinece and 

 Rafflesiacece may perhaps be of some use in discriminating them : on this 

 point, however, it may be necessary to observe, that in Nepenthes distillatoria 

 of the Calcutta Botanic Garden, the most marked instances of ovula anatropa 

 and antitropa are to be met with in the ovaria at their mature state. This 

 curious conjunction of forms of ovula, usually so distinct at the period of 

 fecundation, is probably the cause of the discrepancies in the accounts of the 

 direction of the radicle of the ripe seed of that genus. 



Cytinece and Rafflesiacece appear to me completely misplaced in Endlicher's 

 < Genera'* and Lindley's 'Introd ^ction to the Natural System'!, and equally 

 so m Reichenbach's < Conspectus Regni Vegetabilis'^;. Batsch § formed Cy- 

 tmus into a family, Asarinece, with Aristolockia, Antrum, Pistla and Tacca. 

 BartlmgH places them with Asarinece, Tacea and Balanophorece in a class called 

 Aristolochece, with which he commences his • Vegetabilia Dicotyledonea.' It 

 is remarkable that he places « ad calcem Qftinearum? Gonyanthes (Bl.), now 

 I believe referred to Burmanniece. 



To the account of the two genera of Cy tinea, I have added an account of 

 two Asarineous plants. 



* Genera Plantarum, p. 75. + Page 392< 78 



§ Tabula Affinitatum R egn i Vegetabilis (1802), p. 244. \ Ordines Naturales, p. 79. 



