. The natural history of plants. Botany. 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, w
. The natural history of plants. Botany. 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 ^^' '''â 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 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.âL. Gen. 304. âAdanb. Fam. des PI. ii. 376.âJ. Gen. 404.â Gjertn. Fruct. t. 76. â Lamk. Diet. i. 694; Suppl. ii. 191; III. t. 8
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, bookyear1871
