ON THE GENUS CNEORUM. 255 
given a positive position to Cneorum. Mr. Brown, in his Sup- 
plement to Tuckey’s Voyage, does not allude to it. Künth, 
with some doubt, places it at the end of his Pteleacee, and 
asks whether it may not rather be approached to Dodonea.* 
Mr. A. de Jussieu, in his admirable memoir on the Rutacee, 
excludes it from his Xanthoxylee, formed for the most part 
of the Pteleacee of Mr. Kiinth.t In the Prodromus, De 
Candolle restores it to its position at the end of Xanthorylee ; 
but in a subsequent note! suggests that with Suriana and 
Heterodendron, Desf., it may possibly form a distinct Order. 
Mr. Arnott describes the Order Surianee, composed of the 
single genus Swriana, which he places doubtfully between 
the Crassulacee and Ficoidee, on account of its relation to 
Neuradee, and thence to Rosacee and Geraniacee, to which 
Künth and others had likened it. In fact it bears but little 
affinity to Cneorum ; and not much more, as Mr. Arnott ob- 
serves, to Terebinthacee in general|| Dr. Lindley describes 
likewise the Order Surianacee from the single genus Suriana, 
to which he reluctantly appends Cneorum and Heterodendron, 
with the observation that the character of the Order must be 
altered if they are to be admitted intoit.$ Bartling had placed 
Cneorum amongst his genera dubie sedis. Finally, in his 
late immerse and most useful undertaking, the Genera Plant- 
arum, Professor Endlicher accords it with Suriana, a place not 
less doubtful at the foot of Connaracee, probably from its 
imbricate estivation, and from his supposing that the embryo 
was unfurnished with a perisperm ; but its position and that 
of the radicle in tbis Order is so different, that were there not 
other notable distinctions, these alone would preclude any 
such union. It appears to me that Czeorum is not less dis- 
tinguished from Heterodendron than from Suriana.  Hetero- 
dendron has its ovules fixed to the base of each cell; its 
* Künth, Tereb. Ann. Hist, Nat., vol. ii. p. 357. 
T A. de Juss. Mem. Rut. p. 41. 
1 Prodr., vol. ii. p. 91. 
M Wight and Arn. Prodr. Fior. Pen. Ind., vol. i. p. 360. 
§ Lindl. Nat. Syst., Second edition, p. 142. 
