The plains of the Rio Negro and the Amazons are the home and habitat of the most remarkable of all aquatic plants, the _Victoria regia_,[115] truly deserving its _royal_ rank on account of its curious conformation and splendid beauty. It is said to have been first observed by Häuke, about 1801, and afterwards to have been noticed by Bonpland, D'Orbigny, and others; but the first person who accurately described it was Pöppig, in 1832, who saw it in the river Amazons. Sir Richard Schomburgk, who discovered it in the rivers of Guiana, was, I believe, the first to introduce it in England, where a splendid specimen may be seen at Kew, another at Chatsworth, and a third in the Botanic Garden of Glasgow. Its thick fleshy root-stocks send up a number of long cylindrical leaf-stalks, traversed by air canals, and armed with stout conical prickles. The blade of the leaf is circular, and floats on the surface of the water; when fully developed, it measures from six to twelve feet in diameter, and its margin being uniformly turned upwards to the depth of two or three inches, it assumes the appearance of a large shallow tray. The lower surface is traversed by a number of very prominent veins, radiating from the centre to the margin, and connected with one another by smaller transverse nerves; so that the whole under-side, which is of a purplish colour, is divided into a network of irregular quadrangular compartments or open cells, admirably fitting the leaf for floating on the water. The flowers rise upon prickly stalks. They are more than a foot in diameter, with the white outer petals inclined downwards; while the central rose-coloured ones, with the stamens, remain erect: the whole presenting the fanciful appearance of a central rose-coloured crown resting on a circular range of snowy and most gracefully curved petals. The fruit is a sort of globular capsule, about the size of a child's head, and formidably beset with prickles. The interior is fleshy, and divided into numerous cells, full of round farinaceous seeds, which are eaten roasted by the Spaniards. Hence, in some parts of South America, it is called _Maïs del Agua_, or Water Maize. The pools and lagoons of this region nourish numerous other aquatic plants, among which it will suffice to particularize the _Scyndapsus fragrans_ and the _Raphia tædigera_.