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explanation of figures in plate lxix. 
Illustrating Miss Bachmann’s paper on Col/ema. 
Figs. 2-5 were drawn with the aid of a camera lucida, and have a magnification of 520 
diameters. 
Fig. 1. Diagrammatic representation of cross-section of thallus, showing location of sexual 
organs and growth of trichogynes towards spermatia. 
Pig. 2. Trichogynes converging about a group of spermatia. End of trichogyne fused with 
spermatium at a. 
Fig. 3. Few spermatia in group. Cross-walls of cells below terminal cell of trichogyne much 
thickened. Cells of ascogone somewhat enlarged. 
Pig. 4. Several spermatia in group. Ascogone and trichogyne as in Fig. 3. 
Fig. 5. Growth of trichogynes towards spermatia. End of trichogyne fused with spermatium at a. 
