242 



Ics Plantes viaritimcs ; par M. Pierre Lcsage (Revue Gcner. 



de Bot. Fcv., Mars, April, '90). 



This paper sets forth elaborate experiments on the variations 

 of inland plants grown at the seashore. Ninety species taken 

 from thirty-two orders were studied and three plants especially 

 were cultivated, Pisum sativum, Limim grandifloriivi and Lepi- 

 diuDi sativum. The stated results of the experiments are here 

 translated as closely as possible. 



w 



1st. Plants growing by the sea generally have thicker leaves 

 than when they grow inland. All plants naturally do not follow 



this rule. 



2d. In plants that most successfully submit to maritime influ- 

 ence, the palisade-cells arc much developed. If the thickness of 

 the leaf has notably increased, the palisades arc much lengthened, 



F 



at the same time the number of the mesophyll layers may aug- 

 ment or remain the same, according to the species. If the leaf 

 keeps to more or less the same thickness in the different cases, 

 the palisades are developed so that the relation of the palisadic 

 tissue to the mesophyll is greatest at the seashore. 



3d. The lacunae are greatly reduced in plants of the 



board. 



4th. Chlorophyll tends to be less abundant in the cells of 



plants on the shore. ' This conclusion is less rigorous than the 

 preceding ones. It cannot be verified well, except in plants sta- 

 tioned where they can be more or less inundated by the sea or 

 where they can receive the salt mist from the waves in large 



cpiantities. 



5th. The carnosity, the development of the palisades, the re- 

 duction of the lacunx and the diminution of the chlorophyll can 

 be obtained in experimental cultivation, where the variable ele- 



ment is salt. 



A. M. V. 



Index to Recent American Botanical Literature. 



Aisculus Parryi. C. S. S. (Garden & Forest, iii. 356, Fig. 47). 



Apical groivih in Roots of Marsilia quadrifolia and F.quisctuvi 

 arvcnse. Wm. M. Andrews (But. Gaz, xv. 1 74- 1 77, illus- 

 trated). 



Chestnut Tree — Tlie. (Garden & Forest, iii. 353, 354, illustrated). 



