al. It is possible that these conditions may occur 

 more frequently in places from which I have no mate- 

 rial, or uncier other surroundings, yet the form has 

 been very constant from all my colloctinc points. 



In the mature flower the temporary parts, the stam- 

 ens, petals and nectaries, are smooth. The outside 

 of the sepals and bracts, and the bases of the carpels 

 are thickly covered with hair. Fig, 16 shows hov/ the 

 rudiments of the growing flowers fit together and hov/ 

 the bud is protected by its hairy covering. Most of 

 these hairs have a double function, while young they 

 act as slime cells in keeping the growing point and 

 growing tissues moist. This function is best perfozTned 

 by the hairs on the tips of the sepals and bracts, and 

 the bases of the carpels. These young hair cells are 

 long and tortuoiis, and wind among the growing rudiments. 

 Their cavity is full of sap, and they have very active 

 nuclei, (Fig, 3) They also remain in this active stage 



