Neue Litteratur. 59 



Frothingham, E. H. 1909. Die Douglasfiehte, ihre Küsten- und 



Gebirgsform. (Mitt. deutsch, dendrol. Ges. 1909.) 

 Raunkiaer, C. 1909. Formationsundersogelse og formationsstatistik. 



(Bot. Tidsskr. XXX. 1. p. 20—80. 6 Fig.) 

 Reichenbach. 1909. Icones florae Germanicae. Bd. XIX. 2. Hie- 



racium, von J. Murr, H. Zahn und J. Roll. (Gera, F. von 



Zetzschwitz. 1909.) 

 Rendle, A. B. 1909. Report of Department of Botany, British 



Museum, 1907. (Journ. of Bot. XL VII. 563. p. 424—426.) 

 Renner, O. 1909. Nochmals zur Oekologie der Behaarung. (Flora. 



C. 1. p. 140-144.) 

 Reynier. 1909. Panicum sanguinale L. (Bull. Ac. int. Gdogr. bot. 



3. XVII. 238/240. p. IV.) 

 Riddelsdell, H. J. 1909. Further Glamorganshire records. (Journ. 



of Bot. XLVII. 563. p. 397—412.) 

 Rippa, G. 1909. Sul genere Tupidanthus. (Bull. Orto bot. Univ. 



Napoli. IL 1. p. 145.) 

 Ritter. 1909. Die systematische Verwertbarkeit des anatomischen 



Baues von Früchten und Samen. (Beih. bot. Cbl. 2. XXVI. 1. 



p. 132-156.) 

 Rivelois, A. A. F. 1909. Des Convolvulees indigenes. (Lille 1909. 



8°. 175 pp. ill.) 

 Rock, J. F. 1909. A new Hawaiian Scaevola (S. Swezeyana). (Bull. 



Torrey bot. Club. XXXVI. p. 645—646. 1 fig.) 

 Rogers, Julia E. 1909. Trees that every child should know. (New 



York, Doubleday, Page & Co. 1909. 12°. IX, 263 pp. 48 flg.). [A 



series of populär and easy tree studies for all seasons of the 



year, illustrated photographically. — Trelease.] 

 Rolfe, R. A. and A. B. Jackson. 1909. Additions to the wild 



fauna and flora of the Royal Botanic Gardens, Kew. X. Rubi. 



(Kew Bull. 1909. 9. p. 369 -343.) 

 Rusby, H. H. 1909. Report on botanical work on the Pacific Coast. 



(Journ. New York bot. Gard. X. p. 227—234.) 

 Rydberg, P. A. 1909. Studies on the Rocky Mountain flora. XX. 



(Bull. Torrey bot. Club. XXXVI. p. 672-698.) 

 Rydberg, P. A. 1909. The fiowers and fruit of the turtle- 



srass (Thalassia testudinum). (Journ. N. Y. Bot. Gard. X. p.261 — 264. 



pl. 73.) 

 Safford, W. E. 1909. Cactaceae of northeastern and central Mexico, 



together with a Synopsis of the principal Mexican genera. (Ann. 



Rep. Smithsonian Institution. 1908. p. 525—563. p. 1—15. textfig. 



1 — 24. index. 1909.) [An instructive, well- illustrated treatise. — 



Trelease.] 

 Sajö, K. 1909. Giftige Sumacharten. (Prometheus. XXI. 4. p. 49—52.) 

 Sampaio, G. 1909. Flora vascular de Odemira. (Bol. Soc. brot. 



Coimbra. XXIV. p. 7.) 

 Sandberg, E. 1909. En nordlig fOrekomst af bok. (Svensk bot. 



Tidskr. III. p. (69).) 

 Sargent, C. J. 1909. American Crataegi in the Species Plantarum 



of Linnaeus. (Rhodora. XL p. 181 — 183.) 

 Sauer, L. W. 1909. Quercus Leana; a hvbrid oak. (Plant World. 



XII. p. 198-201. 2 fig.) 

 Schaffner, J. H. 1909. The Gymnosperms of Ohio. (Ohio Nat. 



X. p. 9—12.) 

 Schelle, E. 1909. Die winterharten Nadelhölzer Mitteleuropa's. 



(Stuttgart, E. Ulmer. 1909. 8°. V, 376 pp. 173 Abb. 1 Taf. 1 Karte.) 



