216 INDEX TO AMERICAN BOTANICAL LITERATURE 
Harter, L. L., & Weimer, J. L. Some physiological variations 
in strains of Rhizopus nigricans. Jour. Agr. Research 26: 
363-372. 24 N 1923. 
Hauman, L. Un viaje botanico desde Embarcacién a Yacuiba 
[Argentina]. Physis 7: 134. 12 D 1923. 
Hauman, L. Notes sur le saule sud-americain et sur la valeur 
des espéces botaniques de Molina. Physis 7: 67-81. pl. 
eee D 1923. 
Herre, A.W.C.T. Cordyceps Sphingium (Schw.) in the Philip- 
pines. Mycologia 15: 280, 281. f. zr. 21 D 1923. 
Hitchcock, A. S. New species of grasses from a America. 
Proc. Biol. Soc. Washington 36 98. 19 D 1923 
New species in Bromus (1), Lamprothyrsus (1), Stipa (2), | Chloris (1). 
Hitchcock, A. S. Sodiro herbarium. Science II 58: 465. 7 
D 1923. 
Hitchcock, A. S. Type species of the first 100 genera of Lin- 
naeus’ Species Plantarum. Am. Jour. Bot. 10: 510-514. 
27° N..1923. 3 
Hoagland, D. R., & Martin, J. C. A comparison of sand and 
solution cultures with soil as media for plant growth. 
Soil Sci. 16: 367-388. N 1923. 
Hollick, A. Menispermum canadense. Addisonia 8: 41, 42. 
$l..277. to N 1923. 
Holzinger, J. M., & Bartram, E. B. The genus Crossidium in 
North America. Bryologist 26: 67-72. pl. 5, 6. N 1923. 
Hotson, J. W., & Hartge, L. A disease of tomato caused by 
Phytophthora mexicana, sp.nov. Phytopathology 13: 520- 
531. pl. 22,23 + f.72. 26 D 1923. 
Hoyt, W. D. Some aspects of the relation of species to their 
environment. Science II 58: 432-434. 30 N 1923. 
Humphrey, C. J. Decay of lumber and building timbers due to 
Poria incrassata (B. & C.) Burt. Mycologia 15: 258-277. 
bl, 28-30. 21 D 1623. : 
