. The vegetable kingdom : or, The structure, classification, and uses of plants, illustrated upon the natural system. nfleshy or 0 ; embryostraight ; radicle su-perior, large ; coty-ledons much plants maybe regarded eitheras a distinct Order,or as a mere degene-ration or imperfectfoiTu of Onagiads,from which theu mi-nute calyx and soh-tary pendulous seedsFig. CCCCLXXXII. distinguish them ; to ?wliich may be added an evident tendency on the part of Hippurids to lose theu petalsaltogether. In Hippuris itself the flower is in the simplest possible form ; for it is re-duced to a caly
. The vegetable kingdom : or, The structure, classification, and uses of plants, illustrated upon the natural system. nfleshy or 0 ; embryostraight ; radicle su-perior, large ; coty-ledons much plants maybe regarded eitheras a distinct Order,or as a mere degene-ration or imperfectfoiTu of Onagiads,from which theu mi-nute calyx and soh-tary pendulous seedsFig. CCCCLXXXII. distinguish them ; to ?wliich may be added an evident tendency on the part of Hippurids to lose theu petalsaltogether. In Hippuris itself the flower is in the simplest possible form ; for it is re-duced to a calyx of the smallest size, it has no petals, but one stamen and but one therefore furnishes an instance of the approach of MjTtals to the Asteral reduction of the fruit to one carpel only, seems however to be very different in Hip-puris from that of Fringe-myrtles ; for the latter have a multiplication and excessive deve-lopment of every other organ, to which the pistil forms the exception ; but in Hippuris Fig. CCCCLXXXII.—Loudonia aurea. 1. a complete flower; 2. a section of the HALORAGACE^. 723 the solitary carpel is only a portion of the do-raded structure which is proper to all theother organs. In Hippuris and Myriophyllum the stem consists of a curious arrange-ment of necklace-shaped cellular tissue, whichradiates from the centre, leaving large air-cavitiesbetween its rows. In the centre is a cylinder ofvery fine woody tubes, which inclose a confusedmass of cellular tissue and spiral vessels. It wasprobably this which led Prof. Link to regardIlippurids as Endogens. Damp places, ditches, and slow streams, inEurope, North America, Southern Africa, Japan,China, New Holland, and the South Sea Islands,are the resort of this Order. They are in general of no importance. Halo-ragis citriodora, the Piri-Jiri of the New Zealand-ers, derives its specific name from its fragi-antodour. Trapa, a plant with horned fruit, and gi-eatamygdaloid see
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Keywords: ., bo, bookcentury1800, bookdecade1840, bookidvegetablekingdom00lind
