GRASSES OF IOWA. 413 



Hehn, Victor — 



Kulturpflanzen tind Hausthiere in ihrem Uebergang aus Asien nach 

 Griechenland und Italien sowie in das ubrige Europa. Historisch — lin 

 guiticshe Schizzen. 522. Berlin. 1887. Hist. 



Hemsley, W. Botting— 



Biologia Centrali Americana: or contributions to the knowledge of the 

 fauna and flora of Mexico and Central America. Edited by F. D. Godman 

 and C. Salvia. London. 1882-1886. PI. 



Henderson, John — 



Hand book of the grasses of Great Britain and America. Jour. Pub. Co. 

 Northport, L. I., 1875. 238. Ec. 



Henderson, L. F. — 



Grasses and forage plants in Idaho. Bull. Ida. Agr. Ex. Sta. 38: 193-256. 

 111. Ec. 



Field notes on some Nevada grasses. Bull. Nev. St. Univ. 33: 13 Ec. 



Hitchcock, A. S. — 



Bermuda grass. (Cynodon dactylon.) Cir. U.S. Dept. Agr. Div. Agros. 

 31: Ec. 



Forage plants for Kansas. Bull. Kan. St. Agr. Coll. Ex. Sta. 87: 29. 

 15pl. Ec. 



North American species of Leptochloa. Bull. U. S. Dept. Agr. Bur. PI. 

 Ind. 33: 24. 6 pi. Syst. 



Hitchcock, A S. and Clothier, G. L. — 



Native agricultural grasses of Kansas. Bull. Kan. Agr. Coll. Ex. Sta. 102: 

 179-220. 16 pi. Ec. 



Hodson, E. R. 



Phenological observations on the growth of corn. Cont. la. St. Coll., 

 Bot. Dept. 13: S. Phys. 



Holm, Theo.— 



American Panicums in Herbarium Berolinense and in Herbarium 

 Willdenow. Bull. U. S. Dept. Agr. Div. Agros. 4: 17-23. /. 7-15. Syst. 



A study of some anatomical characters of North American Gramineae. 

 1. Bot. Gaz. 16: 166-171. pi. 15. 2.16: 279-225. pi. 21-22. 3. 16: 275- 

 281. pi. 23-21. 4.17: 358-362. pi. 21. 5.20: 362-365. pi. 26. 6.21; 

 357-360. pi. 27-28. 7.22: 403-406. pi. 20. Morph. 



Hooker, Sir J. D. — 



The student's flora of the British Islands. London. 1878 539. Syst 



Hooker, Sir William Jackson— 



Flora Boreali Americana, or the Botany of the Northern part of British 

 America; Compiled principally from plants collected by Dr. Richardson 

 and Mr. Drummond on the late northern expeditions under the command of. 

 Sir John Franklin. London. 1:351. 2:328. pi. 238 with map. 1840 Syst 



