246 NATURAL HISTORY OF PLANTS. 



base so as to free the fertile and sterile stamens that push it off.' 

 "We mav, then, define the genus Eupomatia as Anonacece with naked 

 flowers, in which the perianth is replaced by a single modified leaf, 

 and the carpels are inserted on a concave receptacle. It is in this 

 order analogous to Troc/todcndron amongst the Mapioliacece . 



Anonce form Family XL VI. of Adanson's great work ; this, as 

 we have seen, includes not only those AnonacecB that were then 

 known, but also Ma(jiioliacea, Menispermacece, several Dilleiiiacece and 

 RannncidacecE, OcJuta, and Fagara. Of this group the genera which 

 really belong to Anonacea are four in number — viz., Anona, Xylopia 

 {XyJopicrori), Uvaria {Narnm), and Asimina. Adanson was the first 

 to recognise the analogies between Xylopla and Anona ; and his genus 

 Nartfm includes both Uvaria proper and also the Asiatic JJnonas of 

 the group Cananga. The Anona; of A. L. de Jussieu only include 

 the five genera Anona, Unona, Uvaria, Cananga, and Xglopia. Most 

 of the other genera united to these by Adanson, he reserved for his 

 order Magnoliaceae. L. C. Eichard gave the collection the name of 

 Anonacea, and this order was only really established in the work pub- 

 lished by Dunal in 1817, so wonderful considering its date. To the 

 genera above enumerated are there added the following : — Kadsura, 

 which belongs to Schizandrece ; Monodora, whose type is the Anona 

 Mgrisiica of G^ertner ; Porcdia, which Euiz & Pavon had made 

 known in 1794, and Guatteria of the same authors, corresponding to 

 Aublet's Cananga. Bcsmos and Melodorum, proposed as distinct 

 genera by Loureiro in 1790, are by us incorporated with the great 

 genus Unona. A. P. de Candolle, in 1824, fully adopted the 

 arrangement of Anonacece proposed by Dunal. Soon after, Plume 

 completely revised most of the Old World genera, assigned more 

 exact limits to the existing genera Unona and Uvaria, and established, 

 either as distinct generic types or as sections of other larger genera, 

 the groups O.vgmitra, Mitrephora, and Oroplicea, whose autonomy we 

 maintain. About the same period, A. de Saint-Hilaire was doing 

 the same work for the American Anonacea, and successively created 

 the genera Anaxagorea, Dugaetia {Aheremoa of Aublet, 1775), 



The flowers only Inst a day, after which the into a sort of rin<: inserted near the edge of 

 wliole set of s-amens, sterile and fertile, come off the receptacular cup. 

 in a single circular piece, their bases being united 



