NATURAL ORDERS. 125 



An unpublished genus of New Holland, wliicli I have 

 named Hymena7ithera, in Sir Joseph Banks's herbarium, 

 agrees with Alsodeia in its calyx, in the insertion, expan- 

 sion, and obliquely imbricate sestivation of its petals, and 

 especially in the structure of its antherse, which approach 

 more nearly to those of Violeae properly so called. It 

 differs, however, from this order in having five squamae 

 alternating with the petals ; and especially in its fruit, 

 which is a bilocular berry, having in each cell a single pen- 

 dulous seed, whose internal structure resembles that both 

 of Violese and Polygalese, between which I am inclined to 

 think this genus should be placed. 



CHAILLETEJil. The genus Chailletia was established 

 by ]\I. de Candolle-^ from a plant found by INIartinin French 

 Guiana, and which, as appears by specimens in Sir Joseph 

 Banks's herbarium, had been many years before named 

 Patrisia by Von Rohr, who discovered it in the same 

 country. At a still earlier period, Solander, in his manu- 

 scripts, preserved in the library of Sir Joseph Banks, 

 described this genus under the name of Mestotes, from 

 several species found by Smeathman at Sierra Leone. 

 Both Bichapetalum and Leucosia of M. du Petit Thouars'^ 

 appear to me, from the examination of authentic speci- 

 mens, to belong to the same genus ; and in Professor 

 Smith's herbarium there is at least one additional species of 

 Chailletia diScrent from those of Sierra Leone. 



Of the two generic names given by M. du Petit [^« 

 Thouars, and published somewhat earlier than M. de Can- 

 dolle's Memoir, Leucosia wiU probably be considered inad- 

 missible, having been previously applied by Fabricius to a 

 genus of Crustacea ; and Dichapetalura is perhaps objec- 

 tionable, as derived from a character not existing in the 

 whole genus, even allowing it to be really polypetalous. 

 It seems expedient, therefore, to adopt the name proposed 

 by M. de Candolle, who has well illustrated the genus in 

 the memoir referred to. It appears to me that Chailletia, 



1 Annal. du Mi/s. d'Hist. Nat. 17, p. 153. 

 "^ Xov. Gen. Madagasc. n. 78 et 79. 



