of Crocus havo the same flowering habits as Mamamelis 

 virf;iniana . but if Hofrnoist'^r' s account of th'j first 

 should also hold for the second, they differ essential- 

 ly from Hamarnelis in the beliavior of the pollen tube. 

 The other genera named as having a longer or shortened 

 period ai-e all pollinated in the spring so that their 

 resting period does not extend through the winter. 



The family of the Hamamelidaceae comprises some 

 fifty species in eighteen genera, of which eight are 

 monotypic. North America has three representative 

 genera: Hamarnelis, Liquidambar, and Fothergilla. The 

 first is found nearly always in such sheltered places 

 as harbor Aspidium acrostichoides . from Labrador to 

 Florida and west to the ITississippi rivei'. The sec- 

 ond is found on the coastal plain and on bottom lands 

 from Hew York to Florida, and thence to Central 

 America, and up the Mississippi river to southern 

 Indiana. The third is found from Virginia to Flor- 



