Report on the work of the Horn Scientific Expedition to Central Australia . HORN EXPEDITION—NARRATIVE. 15 wliich we travelled are species of Portnlaca, popularly known as munyeru, andvarious species of Claytonia. Tiiese <^row in little clumps, lying low down uponthe ground, and remain soft and juicy when everything else is dry and withered. There can, I think, Ije littlt^ douht but that this switch-like structure ofleaves and leaf-stalks, together with, in the case of the desert oak {Casi/arinaDescaiiica/in), the loss of leaves, and the substitution for them of little stillgreentwigs, and a
Report on the work of the Horn Scientific Expedition to Central Australia . HORN EXPEDITION—NARRATIVE. 15 wliich we travelled are species of Portnlaca, popularly known as munyeru, andvarious species of Claytonia. Tiiese <^row in little clumps, lying low down uponthe ground, and remain soft and juicy when everything else is dry and withered. There can, I think, Ije littlt^ douht but that this switch-like structure ofleaves and leaf-stalks, together with, in the case of the desert oak {Casi/arinaDescaiiica/in), the loss of leaves, and the substitution for them of little stillgreentwigs, and also, in other plants, the development of hard, (hoi-ny processes aroundthe seed-cases, is simply due to an adaptation to climatic influenc(\s, and has, inthe case of the Central Australian plants, very little, if indeed anything whatever,to do with protection against animals. In the first place, there are comparatively few animals to feed upon them ;kangaroos and wallabies and other plant-eating marsupials do not exist inanything like sufficient numbers to keep the pla
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Keywords: ., bookcentury1800, bookdecade1890, booksubjectnaturalhistory, booky
