162 



NATUBAL HISTORY OF PLANTS. 



Oonocephalus atiavsolens. 



which belong to tropical Asia and Oceania, besides the ovule being 

 erect and orthotropons, the flowers of both sexes are borne on spherical 

 receptacles or nearly so, and the female calyx is widely cleft above 

 into four lobes. Coussapoa, inhabiting tropical America, has the 

 capituliform inflorescence of Oonocephalus, with its basilar and erect 

 ovule, and the female perianth of Pourouma, provided at the summit 

 with an opening which gives passage to the 

 style. In Cecropia, beautiful American trees, 

 with peltate-digitate leaves, the glomerules of 

 flowers of both sexes are borne on long cylin- 

 drical and spikelike receptacles. Musanga has 

 also digitate leaves ; but the male inflorescences 

 are little spheres, like those of Comcephalus, 

 and the female have a large obovate or piriform 

 receptacle. The gamosepalous calyx, in both 

 sexes, has a circular orifice at the summit, and 

 the male flowers are monandrous. Musanga 

 inhabits tropical western Africa. This is also 

 the native country of Myrianthus and Dicra- 

 nostachys, which have simple pinnate or digitate 

 leaves. The former has the same female in- 

 florescence as Musanga, whilst the latter has 

 ^^' '''■ flowe; J)!'°"'""^' female flowers disposed in stars on a small few- 

 flowered capitule. Both have simple styles, 

 and numerous small male flowers, arranged in close glomerules on 

 the much-branched and nearly cylindrical axes of an inflorescence 

 resembling a compound spike. 



IV. HEMP SEEIES. 



In the Hemp i (fig. 129-136), the flowers are dioecious, regular and 

 apetalous. The male flower is composed of flve sepals, quincuncially 

 imbricate in the bud and inserted on a small convex receptacle 

 which also bears five stamens superposed to the sepals, each formed 



' Cannabis T. Inst. 636, t. 309.— L. Gen. 304. 

 — Adanb. Fam. des PI. ii. 376. — J. Gen. 404. — 

 Gjertn. Fruct. t. 76. — Lamk. Diet. i. 694; 

 Suppl. ii. 191 ; III. t. 814. — Sohkdhe, Eandb. 

 t. 326. — Nebs, Ic. Fl. Germ. ii. 30. — Sohlbid. 

 Wiegm. Areh. v. Seitr. 40, t, 2, fig. 19.— Spach, 



Suit, a Buffon, xi.31, t. 133. — Endl. Gen. n 

 1890.— Pater, Orgmog. 281, t. 61; Fam. Nat. 

 169. — SoHNizL. Icon, t. 96. — Gasparb. S. 

 Canape, in Mem. Bot. t. 1-3. — A. DC. Froehr. 

 xvi. p. i. 30. 



