ANONACE^. 219 



becomes only a shallow pit, or even a horizontal platform. These 

 species have been made into a genus, Hahzelia,^ which, as all its other 

 characters are the same, can merely be considered as a section of the 

 genus Xijlopia, containing only Old World species. 



Again, in other species of this genus, such as X. yr audi flora 

 A. S. H.,== hicida H. Bn.,^ &c., it happens that, as in many other 

 genera of this order, the outer stamens, instead of being fertile, are 

 converted into small petaloid scales (fig. 2C4). 



Even the usual character of the corolla may to a great extent be 

 wanting. In several species from tropical Asia, or the north of 

 Oceania, the petals, all nearly similar to one another, lose much of 

 their length and thickness. Each corolla forms only an obtuse cone ; 

 the petals are sessile, nearly triangular, and of about the same thick- 

 ness from base to apex. The inner ones alone have slight lateral 

 notches at the base, through which, as in the typical Xylopias, we 

 see the pieces of the androceum. The small flowers of X. Vle/llardi* 

 from New Caledonia, possess this conformation of the flower-bud in 

 the highest degree — evidently a step towards the form of the corolla 

 in certain Unonea. 



Finally, two remarkable plants from the east of Africa, formerly 

 ascribed to the genus Anona, must also be referred to Xylopia as 

 forming a particular section to which we shall give the name of 

 Pseudanona. Tliese are X. auijjhwicauUs" and Lamarckii.^ Their 



1 Hook. & TnoJis., Fl. hid., i. 123.— B. H., '" H. Bn., Adamonia, v. 112, n. 1.— Anona 

 Gen., 28, n. 33. — Walp., Ann., iv., 61. — Wall., amplexicaulis Laiik., Diet., ii. 127. — DC, 

 Cat., n. 6478.— MiQ., FL Ind.-Bat., i. p. ii. 37. Prodr., i. 86, n. 22.— Dun., Alon., 76, t. 7. In 

 — H. Bn., Adaiixonia, viii. 330, 340 (nee A. DC, this species, not only are the carpels and the 

 Mem., 31). X malayana HooK. F. & Thoms., ovules in each ovary numerous, and the styles 

 and some analogous species, have an acutely conical linear, but the petals have also a quite peculiar 

 receptacle, whose apex alone is slightly hollowed configuration. The inner set form a small acute 

 to receive the base of the gyna;ceum ; so that triquetrous corolla. The outer ones, far broader 

 these species are intermediate between Habzeiia and longer, and quite difterent in form, are 

 and those species of Xylopia in which the recep- oblong-lanceolate, subspathulate, with the inner 

 taculiir sac envelopes the ovaries up to the faces very narrow and acute, moulded on the con- 

 summit, vexity of the inner corolla, and corresponding 



^ Flor. Bras. Mer., i. 39, t. 8. exactly with its form ; their edges are very thick, 



^ Adansunia, viii. 182. — X. longlfolia A. DC, and are in contact for a breadth of nearly *a centi- 



Mem. 34, n. 1 (1832).— X cuhen-ns A. EiCH., metre, 

 Fl. Cub., 16, t. 6. — X (/randijlora Benth., * H. Bn., loc. cit., n. 2. — Amna grandiflom 



Sulph., 64 (nee A.S. H.). — X Diinaliana Pl. & Lamk., loc. cit. — DC, loc. cit., n. 21. DxTN. 



LiNU., Fl. Columb., 15. — Unona lucida DC, op. cit., 7o, t. 6. Here the buds are much more 



Si/st., i. 498; Prodr., i. 92, n. 34. — DuN., Mon. rounded and obtuse at the apex than in the pre- 



(1817), 116, t. 23. — U. xylopioides Dun., op. ceding species. The outer petals are of nearly 



cit., 117, t. 24. — Coelocline ? lucida A. DC, u^. the same form as the inner ones, but a little 



cit., 33, n. 5. broader and longer. They increase in size towards 



•• U. Bn., Adansonia, viii. 202. the upper extremity, where they arc spoon- 



