IQI2] 



STARR— ANATOMY OF DUNE PLANTS 



287 



Leaf 



M 



T 119 /x (100-123) 



UE... 18 =15 per cent 



PRUNUS 



X 



Stem 



P 



198 M (187-214) 



= 8 per cent 



35 = 3° 



Sp. . . . 51 = 



LE. . . 14 = 



OW... 2.9 



Cu . . . 1.1 



43 



12 



16 

 99 



66 

 17 



5° 



33 



9 



N... 

 D... 

 W... 3.1 



M X 



76 108 



38 M(55) 35 M(45) 



6.7 

 1.8 



F.. 

 L.. 

 R. 

 C. 



S.. 



• * 



* t 



■ • 



• ♦ 



4.6 



4-7 

 3 



3-5 

 4.6 



4-4 

 3-6 



42 

 83 



61 

 Si 



-X". — Hairs on lower surface (none in 



M); 



epidermi 



Only exception to the majority rule is 

 the sclerenchyma, which is heavier in 



surface, of less depth, cuticle more some mesophytic forms. — Figs. 26 and 



urn 



side 



walls 



M 



midrib 



M 



below the stele is scarcely perceptible); 

 oil drops, especially in epidermis and 

 upper part of palisade; crystals and other 



depo 

 and 25. 



■Figs. 24 



■tigs. 26-27. — Primus virginiana: sec- 



t stems 

 dune f 



27. 



26 







27 



