ANON AC E/^. 



199 



by Aublet' under the name of Jmna loiigifuUa (figs. 233, 235), the 

 outer stamens are sterile and transformed into imbricated petaloid 

 blades, while the surface of the ripe fruit is also nearly smooth, features 

 sufficient to characterize a special section of the genus Aberemoa.^ 

 This genus consists of South American trees and shrubs, whose 





Aheremoa [Fiisced) lotii/ifolia. 



Fig. 233. 

 Inflorescence. 



Fig. 235. 



Fruit. 



alternate leaves and young branches are usually covered with scaly 

 or stellate hairs. The flowers are solitary, or in uniparous two- 

 flowered cymes,^ either terminal, leaf-opposed, or lateral.^ About 



* Ouian,, i. 615, t. 248. — Dugxietia longifolia 

 H. Ex., loc. cit. 



^ We have called it Fiisaa (Adaiisonia, viii. 

 326). This section is also distiuguislied by its 

 inflorescence, by these petaloid staminodes ex- 

 ternal to the fertile stamens, by the union of the 

 styles at the top into a single mass, and by the 

 structure of the fruit, which finally becomes a 

 spherical woody mass, like a wooden ball hollowed 

 out into nionospermous cells and whose surface 

 gives but little indication of the fact that this 

 multiple fruit really consists of a large number of 

 ovaries originally free (sec fig. 235). 



* It is in this way that they are arranged in 

 A. longifolia, represented in fig. 233. Moreover 

 we see that the bracts on the axes of the difi'oront 

 gcneratious may have leaf-bnds in their axils. 



There are also two flowers of diflTerent generations 

 in the inflorescence of Anona ? unijlora Dun. 

 {Moil., 76; DC, Prodr., i. 86, n. 21; Icon. 

 Dffless., i. 23, t. 87), which is an Aheremoa, but 

 whose specific name nuist needs be changed for 

 this reason. Accordingly we have proposed [Adan- 

 soni.a, viii. 327) to call it Diigiietia Candollei. 



■* The situation of the inflorescence is lateral 

 in A. longifolia. The uniparous cyme i-eally arises 

 from the axil of a leaf, a leaf that has already 

 fallen, on a last year's branch. Beside it, and 

 from the same axil, a young branch developes at 

 the sauie time. Now the inflnrescence rises 

 up and remains united to a very variable extent 

 by its peduncle either to the young branch or to 

 the last year's one. Something analogous may 

 bo observed in Monodora. 



