GERMINATION OF TREES AND SHRUBS 



299 



JUGLANDACE/E. 

 LubbO'Ck' has described and figured seedlings ol Juglans regia, 

 and of Pterocarya caucasica. M. Fleche'^ has pointed out the 



Fig. 45. — Trichomes of Ju-glmis cintrea, from stem and leaf of seedling, 

 a, Glandular hairs from leaf. Drawn by C. M. King. 



characters of the leaves of the seedlingrs of the English walnut. 

 Kronfeld^ also has added to the literature on the Juglandaeete. 

 Lubbock^*^ has further published on Juglandaeeae. 



Fig. 46. — Black walnut (Juglans ni(jr<v) , earlier and later stages of ger- 

 mination, pinnately compound leaves from the beginning. Photographed bv 

 Photo. Section, Experiment Station, F. E. Colburn. 



Juglans cinerea L. Butternut. Collected September 28, 1917, 

 at Cedar creek, Henry county, Iowa, by L. II. Paramel and G. B, 

 JMacDonald ; placed in bed for stratifying, out of doors October 



"A Contribution to our Knowledge of Seedlings, 513-515. 

 *1. c, 518. 



"Detrage^xur Kenntniss deis Walnuss Engier; Bot. Jahrblicher, 9. p. 280. 

 "On -the Fruit and Seed of the Juglandacese ; Jour. Linn. Soc. (Bot.) 28, 

 p. 247. 



