140 



MEMOIRS OF THE NEW YORK BOTANIC.VL GARDEX 



PLATE 23 



Figure 59. Siigoyiema iHtrcintmosxim 



Upper portion of a typical plant x 250 



" 60. Ilapulosiplion tenuis 



Parts of a typical plant x 500 



" 61. Hapalosiphon suhgelatinosus 



Parts of a typical plant x 500 



