28 Botanisches Centralblatt. 



0. S. 1916. Stipa Nessiana in England. (Kew Bull. 1916. p. 206—208.) 

 0. S. 1916. The genus Phoradendron. (Kew Bull. 1916. p. 239—240.) 

 Pammel, L. H. 1915. The Grasses of the Unitah Mountains and Ad- 



jacent Regions. (Proc. Journ. Ac. Sc. XX. p. 133—149). [This is an 



annotated list of all the grasses found in the Unitah mountains 



with a map of the region. — Harsh berger.] 

 Pegler, A. 1916. On the flora of Kentani. (Ann. Bolus Herb. II. 



p. 1-14.) 

 Pittier, H. 1916. Preliminary revision of the genus Inga. (Contr. U. 



S. nation. Herb. XVIII. p. 173-223, I— XI. ill.) 

 Pleyel, C. 1916. Nya lokaler för adventivväxter. (Bot. Not. 1916. p. 



277-282.) 

 Poeverlein, H. 1916. Beiträge zur Flora von Senones, Departement 



Vosges. (Allg. bot. Zschr. XXII. p. £5—86.) 

 Prain, D. 1916. Curtis's botanical Magazine. Nos 142—144. (London, 



L. Reeve & Co. 1916. 8°.) [Contain: Rosa Davidii, Thuranthos 



macranthum. Stapelia Gettlefiii, Callicarpa giraldiana, Dendrobium 



palpebrae, Telopea oreades, Cytisus monspessulanus, Clematis 



afoliata, Artanema longifolium, Rosa cerasocarpa, Huntleya citrina, 



Sanguisorba obtusa, var. amoena, Abies cephalonica.) 

 Prain, D. 1916. Podocarpus Thunbergii — nomenclature. (Kew Bull. 



1916. p. 235-236.) 

 Ramaley, F. 1916. Dry Grossland of a High Mountain Park in Nor- 

 thern Colorado. (Plant World. XIX. p. 249—270.) 

 Rendle, A. B. 1916. New species of Urera from tropical Africa. 



(Journ. of Bot. LIV. p. 368-371.) 

 Resvoll-Holmsen, H. 1914. Statistiske Vegetationsundersögelser fra 



Maalselvdalen i Tromsö Amt. (Vid.-Selsk. Skrift. Cbristiania 1914. 



42 pp. 4 t.) 

 Rigg, G. B. 1916. A summary of bog theories. (Plant World. XIX. p. 



310-325.) 

 Rikli, M. 1916. Zur Kenntnis der Flora der Insel Kreta. (Actes Soc. 



helvet. Sc. nat. XCVII. 2. p. 213.) 

 Rodway, L. 1915. Addition to the Tasmanian Flora. (Proc. roy. Soc. 



Tasmania for 1915. p. 104-107.) 

 Rodway, L. 1911. Notes on the Tasmanian Flora. (Austral. Ass. Adv. 



Sc XIII. p. 250-254.) 

 Rubel, E. 1916. Die internationale pflanzengeographische Exkursion 



durch Nordamerika 1913. (Actes Soc. helvet. Sc. nat. XCVII. 2. 



p. 59-87. 20 A.) 

 Rydberg, P. A. 1916. Vegetative life zones of the Rocky Mountain 



region. (Mem. New York bot. Gard. VI. p. 477-499.) 

 Salisbury, E. J. 1915, Photographie Studies of Welsh Vegetation. 



(Proc. Linn Soc. London. 1915 -1916. p. 2-3.) 

 Samuelsson, G. 1916. Om den ekologiska växtgeografiens enheter. 



["Ueber die Einheiten der ökologischen Pflanzeneeographie]. (Svensk 



bot. Tidskr. X. p. 349-364.) 

 Schalow, E. 1916. Das Vorkommen von Rosa omissa Deseglise in 



Schlesien. (Allg. bot. Zschr. XXII. p. 86—88.) 

 Schlechter. 1916. Orchidaceae Perrierianae (Collectio seeunda). (Beih. 



bot. Cbl 2. XXXIV. p. 294—341.) 

 Schröter, C. 1916. Ueber neuere pflanzengeographische Forschun- 

 gen in Nordamerika. (Actes Soc. helvet. Sc. nat. XCVII. 2. p. 



213-214.) 

 Scully, R. W. 1916. Flora of Kerrv. (Dublin, Hodges, Figgis & Co., 



Ltd. 1916. 8°. With 6 pl. and 1 m. Price 12/6 net ) 



