Tilden: pilinia and stigeoclonium. 635 



Fig. 29. Side view of prostrate filament showing upright branches 



borne on convex side. 

 Fig. 30. Copy of Cienkowski's figure 19, pi. 1, Bot. Ztg. 34, 1876. Side 



view of prostrate filament showing upright branches borne 



on concave side. 



Plate XXXV. 



Fig. 1. Creeping filament showing characteristic "bow-shape."' 



Fig. 2 and 3. Pilinia plants, the latter having arrived at the fruiting 



stage. 

 Fig. 4, 5 and 6. Showing an example of different growth in young thalli. 

 Fig. 7. Under surface view of a plate (in diagram). Showing position 



of a single branch. 

 Fig. 8. Same branch from nature. 



