I04 MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 



A few spore-bearing stalks or sporophytes developed to a height 

 of a few centimeters, and the spores appeared fairly normal in 

 structure, showing a green coloring matter, but the sporangia did 

 not open and the spores soon perished. 



Erythronium Hartwegi S. Wats. 

 Numbers of bulbs of Erytht-onium Harhvegi obtained from 

 dealers were placed in the dark chamber in the spring of 1901, and 

 a smgle leaf 12 to 15 cm. long was sent up from every one. The 

 leaf, as well as most of the bulbs, soon perished, however, probably 

 due to imperfect cultural conditions. 



Falcata comosa (L.) Kuntze. 



Tubers of Falcata comosa were placed in the dark chamber in 



the spring of 1899, and rapidly developed stems. A comparison with 



control examples showed that the lowest internode of the normal stem 



was 7 cm. in length and that a runner was sent out from this inter- 



FiG. 59. Partial cross section of normal stem of /^rt/crt/'rt. yl, xylem. ^, scleren- 

 chyma. C, sieve tissue. D, bast fibers. X ^O- 



node which grew to the length of a meter or more, while in the etio- 

 lated examples the lowest internode attained a length of 13 to 28 cm., 

 and the runners were represented by branches not more than a cen- 

 timeter in length. 



The successive internodes in the normal measured 3, 3, 4, and 5 

 cm., while in the etiolated all of the internodes above the basal one 



