67 



apart at a touch so none of them could lie preserved intact. The 

 young ovulate cones were from 8 to 12 mm. in length. The male 

 cones had not yet begun to shed pollen and were only 2 or 3 

 mm. long. 



Stanford University, California 



Literature Cited 



Rentham, G. and J. D. Hooker, Genera Plantarum 3 1 : 420. 1880. 



Koch, Karl. Dendrologie 2 2 : 198. 1873. 



Pilger, R. Gymnospermae, in Engler, A. and K. Prantl, Die Naturliche Pflan- 



zenfamilien 13:355. 1926. 

 Rheder, Alfred. .Manual of Cultivated Trees & Shrubs Hardy in North America 



25. 1927. 

 Standley, Paul C. Trees and Shrubs of Mexico, Contr. U. S. Nat. Herb. 23 1 : 



60. 1920. 



