Neue Litteratur. 77 



Pickett, F. L. 1915. A contribution to our knowledge of Arisaema 



triphyllum. (Mem. Torrey bot. Club. XVI. 55 pp. 5 pl. 72 f.) 

 Piper, C. V. and R. K. Beattie. 1914. Flora of southeastern Washington 



and adjacent Idaho. (Lancaster, publ. by the authors, printed by 



New Era Print. Cy. 1914. 8«. XI, 296 pp. 1 map ) 

 Pittier, H. 1915. On the characters and relationships of the genus 



Monopteryx Spruce. (ßull. Torrey bot. Club. XLII. p. 623—627. 2 f.) 

 Poole, H. S. 1915. Senecio Jacobaea and Callimorpha Jacobaea (the 



catile killing ragwort and the cinnabar moth). With remarks by 



Dr. A. H. Mac Kay. (Proc. and Trans. N. Scotian Inst. Sc. XIII. 



p 279-288.) 

 Porsild, M. P. 1915. On the genus Antennaria in Greenland. (Medd. 



om Grönland. LI. p. 265-281. 7 f.) 

 Pouyssegur, H. B. 1914/5. Eypediciön al Ibera. (An. Soc. cienc. 



Argentina. LXXVIII. p. 241-258. LXXIX. p. 35—64, 135—161.) 

 Prain, D. 1916. Curtis's Botanical Magazine. N^ 1548. (London, L. 



Reeve & C. 1916). [Contains: Eucharis Lowii, Sophora macro- 



carpa, Lobelia Holstii, Rhododendron hvpoglaucum.] 

 Prain, D. 1915. Curtis's Botanical Magazine. XI. No. 130, 131, 132, 



133, XII. No. 134.) 

 Piain, D. 1916. Curtis's botanical Magazine. No. 1549. (London, 



L. Reeve & Co. 1916. [Contains: Aristolochia Lawrenceae, Alpinia 



Ehvesii, Chamaedorea nana. Androsace coccinea.] 

 Raymond-Hamet, M. 1916. Sur quelques Crassulacees nouvelles, 



(Journ. of Bot. LIV. Suppl. p. 1—16.) 

 Raymond-Hamet, M. 1916. Sur quelques Crassulacees nouvelles. [fin]. 



(Journ. of Bot. LIV. Suppl. p. 17—33.) 

 Reinke, J. 1915. Studien über die Dünen unserer OstseekUste. 



V. Hinterpommern. Iste Hälfte. (Wiss. Meeresunt. Abt. Kiel. (N. 



F. XVII. p. 283-291.) 

 Reynolds, B. 1915. Whitby Wild Flowers. A complete Botanic list of 



the Flowers, Grasses and Flora of the Whitby district. (Whitby, 



Home and Son. 1915 60 pp. Price 1/ — .) 

 Rietz, G. E. du 1915. Hufvudskärs lafvar. Ett bidrag tili kännedo- 



men om laffloran i Södermanlands yttersta skärgärd. (Svensk bot. 



Tidskr. IX. p. 380-382.) 

 Roberts, E. A. 1915. The distribution of beach plants. (Bot. Gaz. LX. 



p. 406—411.) 

 Robinson, B. L. 1916. New, reclassified, or otherwise noteworthy 



Spermatophytes. (Proc. amer. Ac. Arts and Sc. LI. p. 527—540.) 

 Rolfe, R. A. 1916. Rubus fruticosus Linn. (Journ. of Bot. LIV. 



p. 54— 57 ) 

 Romell, L. G. 1915. Växtgeografiska notiser frün hafsbandet utanför 

 Stockholm, sommaren 1915. (Svensk bot. Tidskr. IX. p. 372-375. 3 f.) 

 Rose, J. N, 1916. Recent explorations in the Cactus deserts of South 



America. (Proc. nation. Ac. Sc. U. S. A. II. p. 73—74.) 

 Rossi, Lj. 1915. Floristicha istrazivanja po jugoistocnoj Hrvatskoj. 



(Glasnik hrv. prirod. dru-stva. XXVII. Kroatisch). (Floristische For- 

 schungen durch südöstliches Kroatien..) 

 Rydberg, P. A. 1915. Phytogeographical notes on the Rocky Mountain 

 region. V. Grasslands of the subalpine and montane zones. (Bull. 

 Torrey bot. Club. XLII. p. 629-642.) 

 Salisbury, E. J. 1915. Botanical observations in Hertfordshire during 

 the Year 1914, with notes on Silene dichotoma and Gentiana 

 praecox. (Trans. Herts nat. Hist. Soc. and Field Club. XVL- 

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