. The natural history of plants. Botany. 140 NATURAL HISTORY OF PLANTS. Sichapetttlum above, for a very variable distance, into two or three stigmatiferous branches. In the internal angle of each cell are inserted two collateral descendent ovules, with a superior and exterior micropyle, capped at the top by an obturator sometimes little developed or want- ing. The fruit is dry, imperfectly dehiscent or iadehiscent, with one^ two or three cells, usually mono- spermous. The seeds contain under their coats a large exalbuminous embryo, with a short superior cylin- . dro-conical radi
. The natural history of plants. Botany. 140 NATURAL HISTORY OF PLANTS. Sichapetttlum above, for a very variable distance, into two or three stigmatiferous branches. In the internal angle of each cell are inserted two collateral descendent ovules, with a superior and exterior micropyle, capped at the top by an obturator sometimes little developed or want- ing. The fruit is dry, imperfectly dehiscent or iadehiscent, with one^ two or three cells, usually mono- spermous. The seeds contain under their coats a large exalbuminous embryo, with a short superior cylin- . dro-conical radicle. In certain African species of Di- chapetalum such as D. HeudeloUi (fig. 224), the floral receptacle, in- Fig. 222. Young gy- Fig. 223. Longitudinal , -, p ^ • -in j n*oeumanddisk(ii!') section of flower. Stead 01 bemg COUVeX, IS hoUOWeO. into a shallow cup, on the edges of which are inserted the perianth and the androceum, nearly on a level with the middle of the height of the ovary, which occupies the centre of the receptacular cup. In other species from the same country, as D. hispidum (fig. 225), the depth of this cup becomes so considerable that the entire ovary is plunged in the cavity and it is on the edge of the receptacle, much higher than the summit of the ovary, that the perianth, an- droceum, and glands of the disk are inserted. This genus then, as actually constituted, in- cludep at the same time plants with hypo- gynous, perigynous, and epigynous insertions. The species constituting it, some thirty in number,^ inhabit all tropical regions of Ame- rica, Africa, Asia, and Oceania. They all have simple alternate leaves, accompanied by two caducous stipules, and axillary flowers, disposed in more or less ramified clusters of cymes. In most cases the peduncle of the inflorescence is drawn up and connate for a vari- able length with the petiole of the axile leaf. Dichcq-etahun Please note that these images are extracted from scanned page images that
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Keywords: ., bookcentury1800, bookdecade1870, booksubjectbotany, bookyear1871
