510 



Fiff. 67 



IOWA ACADEMY OF SCTENCE Vol. XXV, ItilS 

 Via. 6S 



Fig. 67.— ^QxercKs coccinea, germinating seedling; 1, radicle. 2 and 3, 

 young stems. Drawn by C. M. King. 



Fig. 68. — Trichomes of Querciis coccinea. 1, from leaf; 2, from stem. 

 Drawn by C. M. King. 



Fig. 69. — Qiierms cUii)soidaHs. 1, seedling; 2, same expanded. Drawn by 

 C. M. King. 



Pig. 70. — Trichomes of Quercus elUpsoUUiHs. 1, 2 and 3, from stem; 4, 

 under side of leaf ; 5, upper side of leaf. Drawn by C. M. King. 



■pig 71 — Trichomes of Querciis ellipsoidalis. 1, from stem: 2. from up- 

 per side of leaf ; 3, from under side of leaf. Drawn by C. M. Kin.?. 



