108 Floristik, Geographie, Sj^stematik etc. 



Brown, W. H. and D. Af. Matthews. Philippine Dipterocarp 

 Forests. (Philippine Journal Science. IX. 5 and 6. Ser. A. p. 

 414—561. pl. 1-13. 1914.) 



This is a detailed account of a forest type, which is the most 

 extensive and important of the Indo-Malayan region. It is a tall, 

 tropical lowland forest. The dominant species of trees belong to 

 the family Dipterocarpaceae . The number of other large trees varies 

 inversely as the number of Dipterocarps. The distribution of this 

 forest in the Philipp in es is described, and the material of the 

 paper is arranged under the following captions: importance, com- 

 position (with lists of species), plant associations on cleared land, 

 volume, growth (with tables), environmental conditions in the forest, 

 effect of cutting, planting, general considerations of management, 

 summary and lists of species. Harshberger. 



Cockercll, T. D. A., Some Plants from the Vicinitv ofthe 

 Aropahoe Glacier. (Torreya. XV. p. 202—205. Sept. 1915.) 



An account of the more interesting plants, such as: Silene 

 acaulis, Papaver coloradense, Pvimula angiistifolia , P. Parryi, Eritri- 

 chiuni argenteum found near the Arapahoe Glacier at the ele- 

 vation of about 13,500 feet on the Arapahoe Peaks, Colorado. 



Harshberger. 



Detwiler, S. B., The American Chestnut Tree. (American 

 Forestry. XXI. p. 957—960. Oct. 1915.) 



Illustrated notes on the distribution, botanic characters. growth, 

 diseases and wood of Castanea dentata are given in this article. 



Harshberger. 



■ to^ 



Gates, F. C, A Woody Stern in Merremia gentella induced 

 by High Warm Water. (Amer. Journ. Bot. II. p. 86-88. Feb. 

 1915.) 



This plant which is herbaceous in dry land and dies down 

 each year, but in a swamp a little west ofLos Banos, Laguna, 

 Philippine Islands in w^ater a meter deep fed by hot Springs 

 and with a temperature between 30° and 40° C. it develops a woody 

 Stern. Harshberger. 



Gates, F. C, Notes from the tropical Strand: Ipomoea pes- 

 caprae and Canavalia lineata. (Torreya. XV. p. 27 — 28. 1915.) 



A note describing the similarity in appearance of these two 

 plants and a brief Statement as to the movements of Iheir leaves. 



Harshberger. 



Gates, F. C, Relation ofSunshine to the Habitat of Rott- 

 boelia exaltata. (Torreya. XV, Sept. 1915.) 



The plant is a weed common to corn and rice fields in the 

 Philipp ine Islands. After the harvest, during the cloudy rainy 

 season, it is dominant and 6 feet tall, as the sunshine increases, it 

 dies down below Mimosa piidica (7 foot). It lives at the shaded 

 border of woods throughout the 5^ear restricted to partial shade. 



Harshberger. 



