450 BIELIOGEAPHT. 



MiQUEL, F. A. "W. — Plantes noiivelles cultivees dans le Jardin 

 Botanique de I'Universite d'Utreclit. p. 33. 



■ Eemarques sur la Flore du Sud de la Chine, p. 84. 



An enumeration of plants, with description of novelties, col- 

 lected by B. Krone in the S. E. of China, principally in the 

 province of Canton. 



Bourgeons developpes sur les racines des Fougeres. Jour. 



Bot. Ned. 1861. 134. Directing attention to buds which form 

 on the adventitious roots of a Dlplazium. These separate, 

 forming independent plants. 



Note sur quelques esp^ces de Cinchona. Jour. Bot. Ned. 



1861. 139. Descriptions of two species collected by Lechler 

 in Peru. 



Temperature elevee du Spadice d'un Fhilodendron Selloum, 



C. K. dans le jardin botanique de I'universite d'Utrecht. Journ. 

 Bot. Ned. p. 144. 



With a register of hourly observations. The maximum dif- 

 ference between the temperature of the spadix (the poUeniferous 

 surface) and that of the conservatory, was 36° J\ 



Note sur les Piguiers de la Nouvelle-HoUande. Jour. 



Bot. Ned. 1861, 230. 



New species are described. All the sections of the genus 

 Urostiffma are represented in New Holland. 



Eemarques sur quelques especes de JV^epenihes. With 2 



l^lates. Journ. Bot. Ned. 1861. 272. 



With an account of species collected by Teysmann. General 

 observations are added upon the distribution of Nepenthes, and 

 the structure of the stem. Most of the species occupy a limited 

 area, but one ranges in S. E. Asia from the Khasia Mountains, 

 Cochin China, and Macao on the North, to New Guinea, Java, 

 and the Louisiade Archipelago. Species occur from the sea-level 

 to the summits of the volcanic mountains, grovidng upon calca- 

 reous and syenitic rocks, sandy plains, and the vegetable soil of 

 the forests. 

 MoHL, H. TON — Ueber das Kieselskelett lebender Pflanzenzellen. 

 Bot. Zeit. 1861. pp. 209, 217, 225. 



The results of the author's own investigations are preceded 

 by a review of previous observations on the occurrence of silica 

 in plants, the methods employed for the removal of organic 

 matter and isolation of the siliceous framework, general remarks 

 on the distribution through Phanerogamous Orders of plants 

 abounding in silica, and the relation of the amoimt of silica in an 

 organ, as the leaf, to its external appearance — in respect of which 

 Herr von Mohl states that, as a rule, its aspect does not deter- 

 mine whether or not it would leave a siliceous skeleton on being 

 burnt. With regard to the relation of the silica to the cell- 

 membrane, — whether it occur in a kind of organic union with the 

 cellulose wall, or, as suggested by several observers, in the form 



