108 BIBLIOGRAPHY. 



Philippe. — Flore des Pyrenees. Tom. ii. Bagneres de Bigorre, 1860. 

 4to. 



Pokorn-y, A. — Vierter Bericht der Commission znr Erforschung der 

 Torf moose Oesterreiehs. — Yerhandlgn. zool.-bot. Gesellsch. Wien., 

 pp. 81-92. "With 2 plates by Professor Lorenz, showing the exces- 

 sive multiplication of adventitious roots from the axils and sheathing 

 bases of leaves below the surface, by which the formation of the turf 

 is essentially promoted. 



Puel, T. — Etudes sur les Divisions Geographiques de la More Franchise. 

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Quetelet, Ad. — Observations des Phenomenes periodiques. Phenome- 

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 gique, xxxi. 



The observations refer chiefly to the years 1856 and 1857, and 

 were made at Brussels, Amiens, Ostend, Lierre, Namur, Dijon, and 

 Venice, by Schramm, Bommer, and others. 



The names of (1) about 112 species are given, arranged alpha- 

 betically, with the periods of foliation ; (2) of 230-40 species, 

 with the time of flowering; (3) of 69 species, with period of fruit- 

 ing ; and (4) of 53 species, with time of defoliation. There are also 

 tables of observations made on the 21st March and 21st October, at 

 the same stations, on the state of foliation, flowering, &c, of certain 

 species. M. de Selys-Longchamps observes, in a note to the Obser- 

 vations for 1857, that the extraordinary temperature of 1857 re- 

 tarded the fall of leaves. He states, if the number of trees which 

 retained all their foliage be added to those which retained three- 

 fourths (40 and 15) the total but slightly exceeds that of 1855 

 (26 and 27), but a great difference is shown in the proportion of the 

 two numbers ; 1857 presenting 40 species retaining all their leaves, 

 1855 but 26. 



Kalwenhoff, ~N, W. P. — De anatomische zamenstelling der Schors 

 van Robinia pseudo-acacia, in hare ojDvolgende ontwikkelings-toes- 

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Kegel, E. — Index Seminum Horti. Bot. Imp. Petropolitani, — Ann. des 

 Nat. (Bot,). Ser. iv., torn, xii., pp. 373-80. 



Astemon, Kgl., a new genus of Labiataa, stated to be near Cole- 

 brookia, Sin., is founded on a plant raised from seed sent by Cuming 

 from Bolivia. 



Keichenbach, L., and H. G. — Icones Florae Germanicaa et Helvetiae. — 

 Tom. xix., Dec, 16-19. Lipsiae. 



In continuation of the genus Hieracium. 



Keissek, S. — Yegetations-Geschichte des Kohres an der Donau in Oes- 

 terreich und Ungarn. — Yerhandlgn. zool.-bot. Gesellsch. Wien., 

 Bd. ix., pp. 55-74. 



The author remarks the extraordinary tenacity with which the 

 Keed (Phragm/'tes communis) maintains itself abundantly on the 

 Danube, notwithstanding the apparently unfavourable circumstances 

 of flood, shifting river-bed, &c. 



