200 



NATURAL niSTOIiY OF I'LAXTS. 



fifteen species are known, most frequently described as belonging to 

 the genus Anonn ;' in fact, we may say that Ahcremoa is Aiwna with 

 all the petals imbricated. 



CIriHtoch/aiiii/.r has small axillary sessile flowers of the same general 

 structure as in Cananya and Abervmoa : the imbricated petals are 

 inserted on a slightly convex receptacle, as are the indefinite stamens, 

 whose extrorse anthers are surmounted by a truncate dilatation of the 

 connective ; above the stamens are the uniovulate carpels, of variable 

 number,' with narrow, slightly capitate styles, liut the calyx is a sort 

 of irregular sac, at first closed, and afterwards torn irregularly into two, 

 three, or four unequal parts. The fruit consists of several elongated, 

 stipitate, one-seeded berries. But one species* of this genus is 

 known — a small glabrous tree from the east of tropical Africa, with 

 oval-oblong leaves ; its habit is that of several species of Pojjowia, a 

 L'unus to which it was at first referred. 



o 



Oi'dndrci" has small flowers, like CIchtovhUunjiH ; but the calyx 

 consists of three imbricate leaves, not of a valvate sac of one single 

 piece. The six ])etals are imbricated, as in 

 Uvaria ; and the stamens are of the form termed 

 " stamina MiliiisearKm." They are indefinite, 

 but not generally numerous, any more than 

 the carpels. Taking, for instance, the flower 

 of 0. espintana^ (fig. 236), we see that the 

 androceum consists of only a couple of rows 

 of stamens within the perianth. These are 

 lanceolate in form, and end in a long point, 

 which is simply the apex of the connective, 

 and is quite continuous with the filament, 

 of this body are applied two parallel linear, 

 dehiscing longitudinally. The carpels are 

 five or six in number, grouped into a crown on the slightly 



Oxandra espintana. 

 Fio. 236. 

 Flower (5)- 



To tlie outer face 

 extrorse anther-cells. 



• Maut., Fl. Bras., Anonac, 22, t. 5.— 

 SCIII.TL., lor. cU., 320, 32S.— Wali'., Rep., i. 

 85; ii. 747; Ann., i. 17; iii. H13 ; iv. 57. 



' Omv., Journ. Linn. Sor., ix. 175 — 11. II., 

 Gen., \)'M, n. (5, «. — II. IJ.n., Adanxunia, viii. 

 330. 



* Tlicre lire from five to ten. The ovtilu in 

 nearly buhilar witli llic niicropylu (limnw.irds anil 

 outwartlji. 



* C. Kirlii Oliv., loc. cit. — Popowia ! Kxrhii 

 IJentii., Linn. Trans., xxiii. 170, n. 2. The 

 xpecieK wuH tounil on the bunks of the ZunibcMi by 

 Dr. KiiiK ill Livinosionk'h e.\|>e(lition. 



* A. Uicii., Fl. Cub., 20, t. viii.— II. lis., 

 Aditnuunitt, viii. \(\H,\i'M\.— Bocnpea B. H., Urn., 

 21t. n. 3'J (.\. S. n.. Fl. Bras. Mer., i. 11). 



* H. Hn., loc. cit., IGG. — Bocat/ea rspimiaua 

 Si'uic'K, ex li£MTU., Journ. LtHH. Sue., v. 71. 



