196 ‘INDEX TO AMERICAN BOTANICAL LITERATURE 
Harvey, R. B. Growth of plants in artificial light. Bot. Gaz. 
74: AAJA. Ft, 12. 8 2¥-D ‘1922: 
Harvey, R. B. Growth of plants in artificial light from seed to 
seed. Science II. 56: 366, 367. 29S 1922 
Haupt, P. Manna, nectar and ambrosia. Proc. Am. Phil. 
Soc. 61: 227-236. 1922. 
Hedgcock, G. G., & Hunt, N. R. Notes on some species of 
Coleosporium—I. Mycologia 14: 244-257. pl. 21, 22. 1S 
1922. 
Heilborn, O. Notes on the cytology of Ananas sativus Lindl. 
and the origin of its parthenocarpy. Arkiv Bot. 17%: 1-7. 
j- 1-3. 15 My.1922. ; 
Heilborn, O. Taxonomical and cytological studies on cultivated 
Ecuadorian species of Carica. Arkiv Bot. 17": 1-16. pl. 
i. 15 My 1922. 
Includes 2 new species. 
Hemmi, T. On the occurrence of Mycosphaerella wilt of musk- 
melonsin Japan. Phytopathology 12: 394-397. 11S 1922. 
Hentschel, E. Ueber den Bewuchs auf den treibenden Tangen 
der Sargassosee. Mittl. Zool.-Staat & Zool. Mus. Hamburg 
38: 1-25. 1921. 
Hitchcock, A.S. Plant nomenclature. Jour. Bot. 60: 316-318. 
N 1922. 
Hoehne, F. C. Convolvulaceas dos hervfrios: Horto “Os- 
waldo Cruz,” Museu Paulista e Commisao Rondon. 
Anex. Mem. Inst. Butantan [Brazil] Secc. Bot. 1°: I-84, 
93-07. pI. F-To. WN ig22. 
Includes 12 new species. 
Hollick, A. Alnus rugosa. Addisonia 7: 28. 26.0, 527, 265 
1922. 
Holttum, R. E. The vegetation of West Greenland. Jour. 
Ecol. 10: 87-108. pl. 3-5. 26 My 1922. 
Hopkins, E.F. The effect of lactic acid on spore production by 
Colletotrichum Lindenmuthianum. Phytopathology 12: 
ag0-395 f. 1, 2, 3488 tog 
