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Combs, Robert — 



Histology of the corn leaf. Proc. la. Acad. Sci 5:6-10./, 11-13. pi 9-11 . 

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Coulter, John M— 



Manual of the phanerogams and pteridophytes of Western Tex is 

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Craig, John — 



Promising grasses of the northwestern territories. Bull. la. St. Coll. Ex. 

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Crozier, A. A.— 



Forage crops and wheat. Bull. Mich. Agr. Coll. Ex. Sta. 141: 115-145. 

 •//. Ec. 



Grasses and other forage plants. Bull. ia. St. Coll. Ex. Sta. 2: 16 24 Ec. 

 Millet. Mich. St. Agr. Coll. Ex. Sta. 117:64. Ec. 



Darwin, Charles — 



Animals and plants under domestication. 1. 473. 43 f. N. Y. 1884. Hist 

 On the hygroscopic mechanism by which certain seeds are able to bury 



themselves. Jour. Linn. Soc. 1: 151-167. pi. 23. Phys. 



De Candolle, Alphonse Louis Pierre Pyramus— 



L' origine des plantes cultivees. Ed. 3. rev. & enl. 385.8° Paris. 

 1886. Eng. trans. 467. Hist. 



De Candolle, Augustin — 



Plantarum succulentarurn historia; ou, Histoire naturelle des plantes 

 grasses; avec figures dessintees par P. J. Redoute. 1. 2 138 pi. f . Paris, 

 1799-1829. Syst. 



Edgar, W. C— 



Story of a grain of wheat. 195.111. New York. 1903. Ec. 

 Enfield, Edward— 



Indian Corn, its value, culture and uses. 308. New York, 1866. Ec. 



Engler, Adolf and Prantl, Karl — 



Die natuerlichen Pflanzenfamilien nebst ihren Gattungen und wichtigeren 

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 Hackel. Syst. 



Fink, Bruce — 



Sperrnaphyta of the flora of Fayette, Iowa. Proc. Ia. Acad. Sci. 4: 

 81-107. Fl. 



Fitzpatrick, T. J. and M. F. L.— 



The Mora of Southern Iowa. Proc. Ia. Acad. Sci. 6: 173-202. Syst. 



Flint, C. L.- 

 Grasses and forage plants. 398. 171 f. Boston, 1888. 



