108 



MEMOIRS OF THE A'EW YORK BOTAXICAL GARDEN 



PLATE 7 



Figure 60. Xcnococcus Willei 



A — a group of cells as seen in surface view ; 



B — as seen in section view perpendicular to the 



host X 500 



" 61. Cli<im(iesipli07i porforicensis 



A oroup of plants representing- different ages x 1,000 



" 62. Chamaesiphon Willci 



A group of plants representing different ages , x 500 



" 63. OsciUatoria tortuosa 



Apical parts of two filaments x 1,000 



" 64. OsciUatoria articulata j: 



Apical part of a typical filament ..J. x 1,000 



" 65. OsciUatoria articutata circinata 



One wliole plant x 1,000 



" 66. OsciUatoria tenuis Icvis 



Terminal portion of a single filament x 500 



" 67. OsciUatoria Willei 



Terminal i)()rtion of two filaments x 1,000 



" 68. OsciUatoria cliahjhca insnlaris 



Terminal portion of a typical filament x 1,000 



" 69. OsciUatoria chlorina conica 



Terminal portion of a typical filament.. x 1,000 



