. Algæ. Vol. I. Myxophyceæ, Peridinieæ, Bacillarieæ, Chlorophyceæ, together with a brief summary of the occurrence and distribution of freshwat4er Algæ . occurs in the paddyfields of Ceylon. One species of Ankistrodesmus (A. nivalis) is a consti-tuent of the red snow flora, and other forms occur in theyellow snow. Kirchneriella is a genus which, althoughoccurring in small pools and ponds, is a characteristic con-stituent of the summer plankton of certain lakes, its much-curved cells enveloped in wide mucous investments beingvery distinctive. Closteriopsis lonyissima is by far the mostelongated
. Algæ. Vol. I. Myxophyceæ, Peridinieæ, Bacillarieæ, Chlorophyceæ, together with a brief summary of the occurrence and distribution of freshwat4er Algæ . occurs in the paddyfields of Ceylon. One species of Ankistrodesmus (A. nivalis) is a consti-tuent of the red snow flora, and other forms occur in theyellow snow. Kirchneriella is a genus which, althoughoccurring in small pools and ponds, is a characteristic con-stituent of the summer plankton of certain lakes, its much-curved cells enveloped in wide mucous investments beingvery distinctive. Closteriopsis lonyissima is by far the mostelongated member of the Selenastrese, attaining a length of530 p,; but there is some possibility that this Alga is adegenerate form of the Desmid Closterium acicidare (vide W. & G. S. W., 06), in which case itsinclusion in the Protococcales would clearly be incorrect. A number of imperfectly described species of ReinschieUa are without doubt tin;resting-cysts of certain of th freshwater Fig. 131. A—I), Srlenustnimgracile Reinsch. E—G, Lagerh. Allx 520. 204 TetrasporinesB The genera are : Ankistrodesmus Corda, 1838 ; em. Ralfs, 1848 [inclus. RhaphidiumKtttzing, 1845 ; Schroderia Lemmermann, 1898]; Selenastrum Reinsch, 1867 ; ActinastrumLagerheim, 1882 ; Reinschiella De Toni, 1889 [ = Clostridium Reinsch, 1888]; KirchneriellaSchmidle, 1893 [inclus. Selenoderina Bohlin, 1897] ; Closteriopsis Lemmermann, 1898;Lauterborniella Schmidle, 1900 ; Desmatractum W. & G. S. West, 1902 ; DldymogenesSchmidle, 1905 ; Scenedesmus Meyen, 1829 ; Dacti/lococcus Niigeli, 1849 (in part)[= Ouracoccus Grobety, 1909]; Tetradesmm Smith, 1913.
Size: 1447px × 1726px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookcentury1900, bookdecade1910, bookpublishercambridgeengtheuni
