106 Botanisches Centralblatt. 



Fries, R. E. 1919. Strödda iakttagelser över Bergianska trädgärdens 



gymnospermer. (Acta Horti Bergiani. VI. 4. p. 3 — 19. 1 f. 1 t.) 

 Fries, R. E. 1919. Studien über die Blütenstandsverhältnisse bei der 



Familie Anonaceae. (Acta Horti Bergiani. VI. 6. p. 3—48. 34 A.) 

 Gates, F. C. 1919. A comparison of the trees found in cemeteries of 



Hancock County, Illinois with the native trees of the same region. 



(Report iMichigan Ac. Sc. XX. p. 241—243.) 

 Gertz, 0. S919. Christopher Rostii herbarium vivum. (Oesterr. bot. 



Zschr. LXVII. p. 369-382.) 

 Godfery, M. J. 1919. Epipactis media (Fries!) Bab. (Journ. of Bot. 



LVII. p. 80—83.) 

 Godfery, M. J. 1919. The problem of the British Marsh Orchids. 



(Journ. of Bot. LVII. p. 137-142.) 

 Griggs, R. F. 1919. Asclepiadora viridis in Ohio. (Ohio Journ, Sc. 



XIX. p. 299.) 

 Griggs, R. F. 1919. Scientific results of the Katmai expeditions of 



the National Geographie Society. IV. The character of the eruption 



as indicated by its effects on nearby Vegetation. (Ohio Journ. Sc. 



XIX. p. 173-209. 18 f. 1 m.) 

 Griggs, R. F. 1919. The beginnings of revegetation in Katmai Valley. 



(Ohio Journ. Sc. XIX. p. 318-342.) 

 Harvey, L. H. 1919. A coniferous sand dune in Cape Breton island. 



(Bot. Gaz. LXVII. p. 417—426. 8 f.) 

 Hausmann, G. 1914. Beobachtungen über die Mistel (Viscum album). 



(Sitzber. nath, Ver. preuss. Rheinlande u, Westfalen 1913 [1914]. 



2. p. 91—93.) 

 Hayek, A. von 1919. Die pflanzengeographischen Verhältnisse des 



westlichen WoUhynien. (Verh. zool.-bot. Ges. Wien. LXIX. p. 



43—44 der Sitzber.) 

 Hegi, G. 1919. Illustrierte Flora von Mittel-Europa. IV. Bd. 39. Lfrg. 



p. 321-491. ill. (München, J. F. Lehmann. O. J. [1919]. 8«.) 

 Hemsley, W. B. a. o. 1919. Flora of Aldabra, with notes on the flora 



of the neighbouring islands. (Kew Bull. 1919. p. 108-153.) 

 Hochreutiner, M. B. P. G. 1919, La parente des Guttiferes et des Hyperi- 



cin6es. (C. R. Soc. Phys. et Hist. nat. Gen^ve, XXXVI. p. 26—27.) 

 Höhn, W. 1918. lieber die Flora und Entstehung unserer Moore. 



(Mitt. natw. Ges. Winterthur. XII. p. 29—65. 3 Prof. 1 K.) 

 Hutchinson, J. 1919. The rain tree of Hierro, Canary Islands. (Oreo- 



daphne foetens). (Kew Bull. 1919. p. 153—164. 3 f.) 

 Jennings, 0. E. 1919. Potamogeton vaseyi in northeastern Ohio. (Ohio 



Journ. Sc. XIX. p. 343.) 

 Johansson, K. 1918. Nägra nya gottländska värdväxter för Cuscuta 



Epithymum Murr. [Einige neue gotländische Wirtpflanzen der 



C. E. M.]. (Svensk bot. Tidskr. XIL p. 415-416.) 

 Johnston, I. M. 1919. Contributions on southern Californian botany. 



(Bull. S. California Ac. Sc. XVIII. p. 18—21.) 

 Journal (1919) of the Arnold Arboretum. Vol. I. N^ 1. (Cambridge, 



The Riverside Press. 1919.) 

 Kaikreuth, P. 1919. Die Flora des südlichen Teils des Kreises Berent. 



:Ber. westpr. bot.-zool. Ver. XLI. p. 23—28.) 

 Käser, F. und G. Sulger Buel. 1917. Flora von Samnaun. (Jahrb. 



St. Gallisch, natw. Ges. LIV. p. 132—208. 2 F.) 

 Knowlton, C. H. and W. Deane. 1919. Reports on the flora of the 



Boston district. XXX. (Rhodora. XXI. p. 78—83.) 

 Knuth, R. 1919. Oxalidaceae americanae novae. (Notizbl. Berlin- 

 Dahlem. VII. p. 289-318.) 



