PLATE 11. 



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SHELLS ARK. 



(Hicoria laoinioaa Sargent. Synonym: Carya sulcata Nuttall. ) 



Variation in form of wild nuts. 



1. Quadrangular. 



la. Quadrangular, section of 1. Specimen from Peter Dailing, Boring, Tenn. 



2. Roundish, compressed. 



2a. Roundish, compressed, section of 2. 



2ft. Roundish, compressed, portion of hull of 2. Specimens from W. D. Hills, Odin, 111. 



3. Oval. 



3o. Oval, section of 3. Specimen from Peter Dailing, Boring, Tenn. 



4. Long ovate, compressed. 



4a. Long ovate, compressed, section of 4. 



5. Roundish, oblique. 



5<z. Roundish, oblique, section of 5. 



Specimens of 4 and 5 from W. D. Hills, Odin, 111. 



6. Ovate, oblique. 



6a. Ovate, oblique, section of 6. Specimen from Fred Lionberger, Hugo, Mo. 

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