2(i University of California Puhlications in Botany [^■o^- 7 



(Michx.) Salisb. from Midii^Mii which we have examined have been 

 found to contain floi'al iiidinicnts. In addition to the brief report 

 of Smith, noted below, we have been unable to find mention made of 

 these facts, ami tln' ju-cscnt communication is ])r('liminary in the 

 sense that the results of a luunber of years" investigatioji herein 

 reported have (1on(> little more than point out the lines along which 

 the problem can be attacked. A rather large amount of data based 

 upon observation in the field and upon tlie results of garden cultures 

 makes it possible to establish certain facts with some definiteness 

 and it thus seems best to submit now the evidence at hand. 



Miss A. S. Smith (1896) in collections nmde on April 5, 1896, 

 near Ithaca, New York, examined fifteen buds, probably still in the 

 rootstock '* crowns, " which were starting their growth in the par- 

 tially frozen soil. Only one of the fifteen buds was maturing a normal 

 flower and the remainder apparently corresponded to those figured 

 in i)late 6. ]\Iiss Smith cut sections in celloidin and reports that 



TABLE 1 



Length in mm. of the structures making up various sizes of undeveloped 

 flowers in TriUium sessile var. giganteum 



Petals Stamens Pistil 



22.0 15.0 8.0 



22.0 12.0 7.0 



21.0 18.0 8.0 



20.0 16.0 7.0 



17.0 12.0 7.0 



15.0 10.0 7.0 



11.0 10.0 5.0 



10.0 9.0 6.0 



10.0 9.0 3.0 



8.0 7.0 3.0 



8.0 6.0 3.0 



7.0 6.0 1.0 



3.0 2.0 1.0 



2.0 1.0 0.3 



1.6 0.8 0.3 



1.2 " 1.2 0.6 



0.6 



0.4 



0.4 



0.1 

 0.1 



0.1 



