ii6 



MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 



cm. in height, when the 

 terminal bud perished. A 

 lateral bud then devel- 

 oped an erect branch 

 which extended the total 

 height of the shoot about 

 30 cm. above the soil. 

 The terminal bud of this 

 branch also perished and 

 the growth of other lat- 

 eral buds had begun. 



The behavior of the 

 cortical and epidermal tis- 

 sues was much the same 

 as in H. niinniia. The 

 median collapsing layer 

 of cortex turned brown- 

 ish-yellow, and with the 

 disintegrating epidermal 

 cells gave the stem a 

 brownish-black hue. The 

 bast fibers were fewer in 

 number, and but little 

 thickened in any instance. 



Hyacinthus sp. (grape 

 hyacinth). 

 Leaves of awakening 

 bulbs attained a length of 

 25 cm. in darkness, which 

 were crescentic in cross 

 section, and yellowish, or 

 perhaps slightly greenish 

 at the tips. The presence 

 of some chlorophyl was to 

 be detected in many plants, 

 the leaves of which were 



Fig. 71. Hicoria ovata. Etio- 

 lated plantlet, and terminal por- 

 tion of normal shoot. 



