198 



DOUGLAS FIR 



at maturity the scales fall, leaving the bare 

 axis ; pollen with air-sacs ; leaves linear, 

 notched at apex, strongly pseudo-distichous. 



Fig. 54. Pseudotsufia Doufihisii, shownig the pendent cone, and exserted 

 three-pronged carpellary scales, p. 197 (V). 



