PLANTS OF THE INDIAN DESEET. 107 



CHENOPODIACEAE. 



Haloxylon recurvum Bunge. — Figs. 285, 286. Leaves semi- 

 terate. Epidermal cells with outer walls papillose. Stomata de- 

 pressed. Aqueous tissue subepidermal and central. Palisade tissue 

 continuous on the upper surface and broken by aqueous cells on 

 the lower. A bundle-sheath like layer below palisade tissue and 

 bringing into contact the assimilatory and vascular system. Veins 

 peripheral and central and surrounded by small-celled parenchyma. 

 Oxalate of lime in the form clustered crystals in the subepidermal 

 and central aqueous tissue. T. S. of the axis circular. Assimilatory 

 tissue in the axis of palisade cells. Pericycle of thin groups of stone- 

 cells. Peripheral bundles traversing the central aqueous tissue and 

 the central bundles embedded in interfascicular wood prosenchyma. 

 Pith of thick-walled cells. 



Haloxylon salicornicum Bunge.— Fig. 288. Epidermis of 

 thin-walled tabular cells. Stomata depressed. Aqueous tissue subepi- 

 dermal and central. Palisade cells forming a continuous ring. Cluster- 

 ed crystals in the form of a layer in subepidermal aqueous cells and 

 also scattered in the central aqueous tissue of the leaf and axis. 

 Bundle-sheath-like layer below palisade tissue and bringing into 

 contact assimilatory and vascular tissues. Pericycle of stone-cell 

 groups and isobilateral. Peripheral vascular bundles traversing the 

 central aqueous tissue and the central vascular bundles embedded in 

 interfascicular wood prosenchyma. Pith of thin-walled cells. 



(To be continued) 



