every case where slender-stemmed aquatics, such as Potamogeton 

 or Myriophyllum, grew so thickly as to furnish a support. A 

 rhizome about an inch long and an eighth of an inch thick was 

 imbedded among these plants, rising obliquely from them, and 

 at the top of this the stem grew erect, in no case much more than 

 six inches above the surface. The yellowish-white roots, well 

 clothed with short and thick root-hairs, did not dip down into the 

 water but spread out almost horizontally through the mass of 

 vegetation, a considerable body of which was lifted up when the 

 Habenaria plants were raised. With a little gentle shaking they 

 were readily drawn out. The inflorescence was of a light-green 

 color, the leaves of a rather light, but brilliant, green, and sub- 



The plant would have been more carefully examined, had it 

 not been found just as we were about to make a hasty return. 

 It did not occur to us to investigate its germination, which we 

 might have done, as many plants were in fruit. It seems reason- 

 able to suppose that the seeds germinate while in the pods. 



It is not improbable that the plant is common in such locali- 

 ties, but we had no other opportunity of finding it. It certainly 

 did not grow along the shore, nor in the mud, for such locali- 

 ties, there and elsewhere, were often searched. So far as this 

 locality is concerned, therefore, the plant grows only as a natant. 

 H. H. Rusby. 



THE TYPE OF ZAMITES MONTANENSIS FONT. 



Mr. R. S. Williams recently donated to the Garden a collection 

 of some fifty specimens of Lower Cretaceous fossil plants, per- 

 sonally collected at Great Falls, Montana, about sixteen years 

 ago. Dr. J. S. Newberry and Professor Wm. M. Fontaine sub- 

 sequently described the flora of the locality, so their papers were 

 consulted when engaged in the work of identifying and labeling 

 the specimens. Among them was found an unusually perfect 



and showing both impression and cast as counterparts. To my 



