THE 



Journal of Indian Botanp. 



Vol. I. MARCH, 1920. Nos. (5 & 7 



THE PHYSIOLOGICAL ANATOMY OF THE 

 PLANTS OF THE INDIAN DESERT 



BY 



T. S. Sabnis, B.A., B.Sc. 



St. Xavicr's College, Bombay. 

 (Continued from p. 10'J.) 



ZYGOPHYLLACEAE. 



Tribulus terrestris £.— Figs. 68, 69, 70. Epidermal cells 

 tabular with outer and inner walls convexly arched outwards and 

 inwards, respectively. Guard-cells elevated. Veins embedded and 

 provided with bundle-sheaths, of thick-walled chlorophyll contain- 

 ing cells. Mesophyll composed of palisade tissue on the adaxia 

 side and of subepidermal aqueous layer and palisade tissue on the 

 abaxial side. Clustered crystals occurring in the leaf and axis. 

 Clothing hairs unicellular on the leaf and axis. Primary cortex 

 forming an aqueous tissue. Wood composite. Wood proseuchyma 

 enclosing the end of the xylem bundles. Pith formed of thick-walled 

 colls. 



Tribulus alatUS L. — Epidermal cells tabular with outer and 

 inner walls convexly arched outwards and inwards respectively. 

 Outer walls superficially granulated. Guard-cells elevated. Mesophyll 

 formed of palisade tissue on the adaxial side and subepidermal 

 aqueous layer and palisade tissue on the abaxial side. Veins 

 embedded and provided with bundlo-sheaths of thick-walled chlorens 

 chymatous cells. Clustered crystals in the leaf and axis. Wood 

 composite. Wood parenchyma enclosing the lower ends of the 

 xylem bundles, Pith. formed of thin- walled cells. 



Seetzenia orientalis Done — Figs. 71, 72, 73, 74. Epidermal 

 cells tabular, Large water-storing cells intercalated amongst the 

 ordinary epidermal cells. Stomata depressed. ; Mesophyll formed of 



