294 Proceedings of the Club 



There are also : 



19. A Mountain-bog formation, with several species of Phyl- 



lodoce, Kalmia microphylla, Ledtun glandidosum and Salix chloro- 

 phyll a. 



20. The Geyser formation peculiar to geyser and thermal 

 waters are Spraguea midticeps, Paniaun thermale, Mentha rubella 

 and Eleocharis thermale ; the latter growing in water hot enough 

 to be unpleasant to the touch. 



In the alpine region the differentiation into xerophytic, meso- 

 phytic and hydrophytic formations is less marked ; halophytes are 

 wanting, and the hylophytes are stunted specimens of Pinus albi- 

 caulis and Abies subalpina. 



The peculiar alpine formations are : 



21. Alpine clover-fields, with species of Trifolium only a few 

 centimeters high, as T. nanum, T. montanum, T. dasyphylhim, and 

 T. Haydeni. 



22. The Alpine-willow formation, made up of Salix nivalis 

 S. petrophila, S. tenera, S. glaucopis, and 5. Dodge ana, the last one 

 the smallest willow in the world, no specimen being two inches 

 high. It was discovered on Electric Peak in the north border of 

 the Yellowstone Park, at an altitude of 3300 m., and was named 

 in honor of Mr. Wm. E. Dodge, of New York, through whose 

 liberality this botanical exploration was prosecuted. 



23. Finally the Rock-slide formation, with curious flora, con- 

 sisting of Claytonia mcgarrhiza, Alsine Americana, Arenaria Nnt- 



tallii and Gilia de bills. 



j 



on the beauty of the mountain flora, and by Dr. Britton on the 

 Dodge expedition of 1 897, of which the paper is a result. 



Professor Britton announced that the keys of the Museum 

 building of the New York Botanical Garden had been turned over 

 to him, and that the museums were immediately opened to the 

 public. The installation of the temporary exhibit is going rapidly 

 forward. President Brown added that the Torrey Club congratu- 

 lates itself on the progress of the Botanical Garden, progress which 

 is in large part the outcome of the Club's influence. 



Adjournment followed. 



Edward S. Burgess, 



Secretary. 



