IXII. GUTTIFERiE (OLIVEU). 169 



6. OCHROCARPUS, Thouars ; Benth. et Hook. f. Gen. PI. i. 

 175 and 980. 



{Calysaccion, Wight, Illust. i. 130.) 



Flowers polygamous. Calyx closed before flowering, at length opening in 

 2 (or sometimes 3) valves or sepals. Petals 4-7 (or more). Stamens indefi- 

 nite, free or very shortly connate below ; filaments filiform ; anthers erect, 

 oblong or linear, dehiscing longitudinally. Ovary 2-celled ; style short, 

 thick ; stigma 2-lobed ; ovules 2 in each cell. Fruit baccate, 1-4-seeded. 

 Seeds large; embryo of a large fleshy tigella (radicle), with the cotyledons 

 reduced to a mammilliform projection or 0. — Trees with axillary flowers. 



A small tropical genus of Africa and India. I have seen out one African species, of 

 which there are excellent specimens in the Hookerian Herbarium. 



1. O. aLfricanus, Oliv. A tree of 40-50 ft. ; the leafy extremities 

 rather compressed. Leaves large, coriaceous, oblong-elliptical, apiculate, 

 cuneately narrowed or rounded at the base ; midrib very prominent beneath ; 

 lateral parallel veins rather inconspicuous ; 6-10 in. long, 2-3^ in. bro;id ; 

 petioles ^1 in. Flowers about 1^ in. diam., from the nodes of fallen 

 leaves; peduncles solitary or 2 or 3 together, 1-1 j in. long, erect. Calyx 

 opening in 2 orbicular or sometimes in 3 broadly elliptical, somewhat pointed, 

 concave, recurved valves. Petals 4 or more, half as long again as the sepals. 

 Stamens very numerous, shortly connate at the base ; anthers linear-oblong, 

 shortly apiculate. Ovary globose, narrowed into a short thick style ; stigma 

 2-lobed, lobes smooth above, recurved ; ovules geminate. — Mammea africaua, 

 Don, Gen. Syst. i. 619 ? 



Upper Guinea. Sierra Leone, Afzelius I Prince's Island, Mann and Barter ! (The 

 above description is taken from Mr. Mann's specimens.) 



In the Kew Museum there are fruits labelled '■' M. africana!^' received from the late 

 Mr. Barter, which, I think, probably belong to the same species. Externally they are very 

 similar to the fruit of Mammea americana, but the outer uniform layer of the pericarp is 

 considerably thicker {\-\ in.) than in specimens which I have seen of that species. The 

 seeds (H-^4 in- long, l-H in- diam.) have a hard woody testa, and are closely invested 

 with a fibrous-pulpy layer, of which it is not easy to predicate the origin. The embryo, so 

 far as I can make out, consists of a uniform, hard, fleshy mass, with a short maniiilifurm 

 extremity ; the latter separating easily into equal halves. I incline to regard the mass of 

 the embryo as tigella (radicle), and the 2-partite mamilla as the cotyledons, — precisely the 

 converse of what obtains in M. americana, as so carefully described by Messrs. I'lamhon 

 and Triana, and correctly, as I have myself ascertained. As a similar structure obtains iu 

 Indian specimens of Calysaccion, which does not appear to differ geucrically from Orhro- 

 carpus of Thouars, I have, with the concurrence of M. Triana, referred the Africau Mam- 

 mea of Don, to the latter geims ; Ochrocarpus occupying in the ^ribe Garciniea a relation 

 corresponding to that borne by Mammea to the rest of Calophyllea. 



Order XXIII. TERNSTRGEMIACE^ (by Prof. Oliver). 



Flowers regular, hermaphrodite or rarely unisexual. Sepals usually 5, 

 free or shortly connate, imbricate, the inner often larger. Petals usually 5, 

 free or usuaUy connate below, much imbricate. Stamens iiuN'tiiiite, rarely 

 definite, h^vpogynous, free or connate and adnate below to the petals ; antbtrs 



