310 
in a nursery. Male flowering trees are preferable to female, for 
when the latter are fruiting, the cottony fibre which surrounds the 
seeds is apt to become objectionable. 
Populus Eugenei, Simon-Louis.—Although there are several 
head of small branches. It grows rapidly and will apparently 
arrive at a marketable age in 30 or 40 years from the time of 
P. serotina, Hartig, P. regenerata, Hort., P. marilandica, Bosc. 
and P, robusta, Schneider, are other vigorous-growing hybrids, 
XL.—DIPENTODON. 
A New Genus or Uncertain Systematic PosirTIon. 
S. T. Dunn. 
In 1898 Mr, Augustine Henry sent to Kew from Mengtze in 
Yunnan, where he was then stationed as Commissioner of Customs, 
specimens of the foliage and young fruits of a small tree growing 
in the forests which covered the mountains to the south of that 
town. The specimens exhibited such unusual floral characters 
