204 



Pub. Puget Sound Biol. Sta. 



Vol. 2, No. 46 



wild crab apple is common. A very dense growth of bush honeysuckle 

 {Lonicera involucrata) is found in several cases. The western dogwood 

 {Camus occidentalism is rather abundant in a good many cases. Willows 

 (Salix spp.) and the red alder are frequently found. A few marginal 

 ditches are invaded by cascara (Rhumnus pm-shiana) ; and conifers, such 





PLATE 30 



View of margin of a typical Puget Sound spliagnum laog (Henry bog). 

 Labrador tea is prominent in tlie foreground. Back of tliis is the zone of aspen 

 in tiie marginal ditch. In the background is the fir forest outside of the bog. 



