MEMOIRS OF THE NEW YORK BOTANICAL GARDEN. 17 1 



stomata were found both on the petiole and laminae. Geotropic 

 curvatures were exhibited by the terminal portions of some of the 

 leaves which had fallen prostate while still growing actively. 



Salvia sp. 

 Numbers of branches of a cultivated Salvia were thrust into 

 small metal dark chambers during the course of the observations in 

 1896 and 1897. Such chambers 

 were made as tight as possible by 

 means of packing of cotton wool, 

 but it can not be definitely affirmed 

 that all light was excluded. If the 

 branches had already laid down 

 flower buds, a development would 

 ensue in which the calyx would 



attain about two thirds of its nor- Fig. 131. 5«/t'/asp. Normal flower with 

 mal size, but the corolla, which is extended corolla and etiolated flowers with 



corollas atrophied. 



usually much longer and highly 



colored, failed to emerge from the calyx, and was almost colorless. 

 The stamens and pistils also failed to reach normal stature or to at- 

 tain functional maturity. 



Sansevieria Guineensis Willd. 



A specimen was placed in the dark room in September, 1900, 

 and when examined in May, 1901, nearly all of the mature green 

 leaves originally borne by the plant were still alive and but little 

 changed as to texture or color. Three young leaves which were 

 about 10 to 15 cm. long at the beginning of the etiolation were now 

 twice this length by basal growth, and the additional portion thus 

 formed was a very pale green in color. One prominent terminal bud 

 had become apogeotropic and formed an upright stem 15 cm. in 

 height with the lower sheathing bracts about 12 mm. in length which 

 is something in excess of the normal. This growth of the upright 

 stalk was continued after a resting period in the summer of 1901 and 

 in January, 1902, seventeen months after the beginning of the test, 

 this stalk was 20 cm. long. 



May I, 1902, twenty months after confinement all of the leaves 

 had perished, but the etiolated stalk still continued. The basal inter- 

 nodes had attained a length of 12 to 14 mm., but those nearer the tip 



