172 



BUDS AND STIPULES 



Catha edulis (Celastrinece), a native of Arabia, where 

 it is cultivated and its leaves used for making a beverage 

 comparable with tea or coffee, presents us with another 

 interesting case of stipules of two kinds on one leaf. 



The leaves are alternate, elliptic or obovate-elliptic, 

 serrate, leathery and persistent; the petiole is short, 

 rather deeply grooved above, prominently edged, scarcely 

 dilated at the base, and articulated. The stipules are of 



two kinds. The outer set 

 of stipules are subulate, 

 with a strong midrib and 

 a ciliate margin, erect, ad- 

 pressed to the axis, and 

 having the anterior half 

 lying in front of the petiole. 

 They are semi-persistent, 

 but many of them fall dur- 

 ing the first winter. The 

 other set of stipules consist 

 of coarse fringes or cilige, 

 not unlike the ramenta of ferns, and are intrapetiolar, 

 extending in front of the true stipules and the petioles. 

 When the outer ones fall the plant appears to possess 

 these fringes only. The i Genera Plantar um ' (vol. i. 

 p. 361) says, ' Stipulas e ciliis paucis/ and seems to refer 

 to these fringes only. 



The terminal bud (at least in the resting stage) is 

 completely covered by the true stipules, and further 



FIG. 293. EKVUM MONANTHOS. 

 St, St, stipules. 



