io6 



MEMOIRS OF THE NEW YORK BOTANICAL GARDEN, 



chamber. No action of any kind was shown as late as June 23d 

 although the temperature was probably suitable for this species. 

 Similar results were obtained by Jost with Fagtis. (See p. 26.) 



Filix fragilis (L.) Underw. 

 Rhizomes taken from the soil at New Canaan, Conn., on Novem- 

 ber 28, 1900, soon showed activity and developed fronds with mid- 

 ribs 25 cm. long with 5 pairs of pinnae. The pinnules were unfolded, 

 being about 4 cm. long. The lower pairs were opposite in the usual 

 manner, but the upper pinnules were variously alternated. The 

 entire frond was deeply tinged with chlorophyl. The rootstocks were 

 intact after this growth, and could doubtless send up other fronds 

 after a resting season. 



Galium circaezans Michx. 

 Rootstocks of Galitmi circaezans placed in the dark room in 

 January, 1900, developed stems which were 30 cm. long with the 



IG. 61. Normal leaf of Galium circaezatis. 



Fig. 62. Etiolated leaf of Ga- 

 lium circaezans. 



ongest internode measuring 7 cm. on March 22. The leaves were 

 partially rolled on the long axis, ovate, and with an obtuse apex. 



