200 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 



of the hypopodium although designated as noi|homologous with any 

 part of the leaf by Goebel.^^** 



A S 



Fig. 156. Smi'lax Beyrtchii. A, normal immature leaf with tendrils, natural 

 ize. B, etiolated leaf, consisting of an exaggerated basal portion, bearing atrophied 

 tendrils, and a rudimentary lamina, X 4- 



Etiolated stems were thicker than the normal by reason of the in- 

 crease in the size of the cortical cells, which were also furnished with 

 thinner walls, the collenchymatous thickening to be found in the 

 inner portion of this region in green stems being lacking. The 

 numerous fibrovascular bundles were not so strongly developed as in 

 the normal. The newly formed smaller bundles to be seen in the 

 cortex of normal stems were not found in the etiolated stems. 



'*°Goebel, K. Organographie der Pflanzen. Part II., p. 432. 1898. 



