The Bulbils and Pro-embryo of Lamprothamnus alopecuroides, A. Braun
Abstract
Downloaded from aob.oxfordjournals.org at Infovell on November 13, 2010 With Plate Vin. T AMPROTHAMNUS is a genus of the Characeae placed in the " ^ subdivision Chareae on account of the presence of only five cells in the crown of the oospore: it differs from Tolypellopsis in the possession of stipular cells and from Lychnothavmus and Chara in having the oogonia below the antheridia. Distribution. The plant has a wide distribution. It occurs in Europe in the countries of Scandinavia, Denmark, Germany, Spain, and England, though in the last-named country it is of very rare occurrence, having been found only in two localities, at Newtown in the Isle of Wight, from which locality it seems now to have disappeared (Groves, '90), and at the Fleet in Dorset (Mansell-Pleydell, '92). It occurs also in Africa (Braun, '67), but is not known in America, Asia, and Australia. The plants which I have investigated were grown from some dried mud sent from the neighbourhood of Port Elizabeth : they have now been growing in a healthy and apparently normal condition for more than two years. General Features. L. alopecuroides roots in very fine mud or slime, growing to a height of