136 
I also visited the Royal Botanical Garden at Kew. I spent 
four days in the herbarium, looking up the types on which 
ican: 
n 
Although many of Pursh’s and Nuttall’s plants were there, I 
could not find, however, what I most wanted. 
PB 
wks BERG, 
New York Botanical GARDEN, Assistant Curator, 
ugust 20, IgOI. 
SECOND FLOWERING OF THE TULIP-TREE. 
An interesting illustration of variation in the time of flowerin 
of plants was recently seen in a tulip tree, Liriodendron Tulip- 
era, growing in the New York Botanical Garden, near the 
western end of the Museum Building. This tree flowered abun- 
dantly during the latter part of May a and on July 6 a few 
ey 
usually originate in the axils the first or second leaf of the 
shoot bearing the spring fone following the same sequence 
noticeable when several blossoms are developed from a branch 
in May. 
It is ies to suggest the cause of a variation of this kind, 
which I believe has not been reported before in the case of 
rere The tree is a perfectly thrifty plant about 20 m. 
1.2 m.in circumference. It has grown in the open and 
a e 0 r 
trunk that characterize the other representatives of this elegant 
and stately tree which is abundantly represented in the Garden. 
