Ausländische Literatiir. 



733 



Mac Caughey, V., The Strand flora of the Havvaiian Archipelago. II. Ecological 

 relations. 483 — 502. 



Bd. XL VI, 1919. I * Steinberg, R. A., A study of some factors influencing tlie 

 stimulative action of zinc sulphate on the growth of AspergiUus niger. II. A 

 comparision ot tvvo strains of the fungu.s. i — 20. — Williams, R. S., Notes ou 

 some western Lichens. 21 — 25. — • Brown, E. D., W. Apogamy in Camptosorus 

 rhizophyllus. 27 — 30. — 2* Ramaley, F., Xerophytic grasslands at different 

 altitudes in Colorado. 37 — ^52. — Osterhout, G. E., Additions to the flora of 

 Colorado. 53 — 56. — Levine, M., The sporadic appearance of non-edible mu- 

 shrooms in cultures of Agaricus campestris. 57 — 63. — 3* Weatherwax, P., 

 Gametogenesis and fecundation in Zea Mays as the basis of xenia and heredity 

 in the endosperm. 71 — 90. — Andrews, F. M., and Beals, C. C, The effect of 

 soaking in water and of aeration on the growth of Zea Mays. 91 — 100. — 4* 

 Arthur, J. Ch., New species of Uredineae. XI. 107 — 125. — Brown, F. B. H., 

 The preparation and treatment of woods for microscopic study. 127 — 150. 

 ■ — 5* Stewart, E. G., Mucilage or slime formation in the cacti. 157 — 166. — 

 Evans, A. W., A taxonomic study of Dumortiera. 167 — ^185. — Pennell, F.W. 

 Notes on plants of the southern United States. V. 183 — ■187. — 6* Griffith, 

 D., New and old species of Opuntia. 195 — ■206. — Williams, R. S., The genus 

 Desmatodon in North America. 207 — -220. — Ashe, W. W., Notes on trees and 

 shrubs in the vicinity of Washington. 221 — 226. — - 7* Gleason, H. A., Taxono- 

 mic studies in Vernonia and related genera. 235 — 252. — • Record, S. J., vStoried 

 or tier-like structure of certain dicotyledonous woods. 253 — -273. — Weather- 

 wax, P., The ancestry of maize — ■ a reply to criticism. 275 — -278. — 8* Berry, 

 E. W., A new Älatonidium from Colorado, with remarks on the distribution 

 of the Matoniaceae. 285 — -294. — - Rydberg, P. A., Phytogeographical notes 

 on the Rocky Mountain region. VIII. Distribution of the Montane plants. 

 295 — 327. — 9* Church, M. B., The development and structure of the bulb 

 in Cooperia Drummondii. 337 — 362. — ■ Pennell, F. W., A brief conspectus 

 of the species of Kneiffia, with the characterization of a new allied genus. 363 

 — IJ-i,. — Hitchcock, R., Preliminary note on a differential staining of the cyto- 

 plasm of Characeae. 375 — 379. — ■ 10* Smith, Ch. P., Studies in the genus Lu- 

 pinus. IV. The Pusilli. 389 — 410. — Arthur, J. C, and Mains, E. B., Grass 

 rusts of unusual structure. 411 — 415. — 11* Bicknell, E. P., The ferns and 

 flowering plants of Nantucket. XX. 423 — 440. — • Thurston, jr., H. W., Sex 

 in the Conjugatae and the relative frequency of the different types of conju- 

 gation. 441 — 446. — ■ Levine, M., Studies on plant cankers. I. The meclianisni 

 of the formation of the leafy crown gall. 447 — 452. — 12* Woodbiurn, W. L. 

 Preliminary notes on the embryology of Reboulia hemisphaerica 461 — 464. 



— Stevens, N. E., The development of the endosperm in Vaccinium corymbosum. 

 ■ 465 — 468 — Evans, A. W., Three South American species of Asterella 469 — 480. 



Bd. XLVII, 1920. i* Howe, Marshall A., Observations on monosporangial 

 discs in the genus Liagora 1^8 — Merriman, M. L., Studies in the conjugation 

 of Spirogyra ternata. 9 — 20. R Gleason, H. A., Some applications of the quadrat 

 method. 21 — 33 — ■ 2* Rybderg, P. A., Notes on Rosaceae. XII. 45 — 66. — 

 Boyer, Ch. S., Rare species of North American Diatomaceae. 67 — -ji. — Miller 

 R. B., The wood of Machaerium Whitfordii. 73—79- — 3* Nichols, G. E., The 

 Vegetation of Connecticut. VI. The plant associations of eroding arcas along 

 the seacoast. 89 — 117. — Schaffner, J. H., The diecious nature of buffalo-grass. 

 119 — 124. — Graff, P. W., Unreported ferns from Montana. 125 — 129. — 

 4* Harper, R. A., Inheritance of sugar and starch characters in corn. 137 — 

 186. — McAtee, W. L., Notes on the Jack Pine Plains of Michigan. 187 — 190. 



— 5* Stork, H. E., Studies in the genus Taraxacum. 199—210. — Osterhout, 

 G. E., A new Oreocarya from Colorado. 211— Bergman, H. P., Internal stomata 

 in ericaceous and other unrelated fruits. 213 — 221. — 6* O'Neal, Cl. E., Micro- 

 sporogenesis in Datura Stramonium. 231 — 241. — Brown, F. B. H., The re- 



