PLANTS OF NORTH ELBA 



75 



BERBERIDACEAE 



Caulophyllum thalictroides (Z.) Mx. 



Blue cohosh. t Papoose root 



Rich moist soil in woods. Rare. Adirondack lodge road near Wood's 

 sap works. May and June. 



NYMPHAEACEAE 



Nymphaea advena Soland. 



Nuphar advena Ait. 



Yellow pond lily. Large yellow pond lily. Spatter dock 



Shallow water in lakes and slow flowing streams. Common. June 

 and July. 



Nymphaea hybrida Pk. 



Nuphar advena var. minus Morong 

 Red disk pond lily. Hybrid pond lily 



Lakes and sluggish streams. Rare. Averyville swamp. August. 

 This is the only locality in North Elba in which 1 have seen this pond 

 lily. The stream that flows through the swamp is two or three feet deep 

 at this place. It has a sluggish current and a soft muddy bottom. The 

 water is very cold. No other lily was seen here. In its characters it is 

 inteimediate between the large yellow pond lily, N. advena Soland., and 

 the small yellow pond lily, N Kalmiana (Mx.) Sims. In 1881, a descrip- 

 tion of it was published in the Annual report of the New York state 

 museum 34: 53, under the name Nuphar advena var. hybrida. In 1886 it 

 was published by Dr Morong as a distinct species to which he gave the 

 name Nuphar rubrodiscum. It is Nymphaea rubrodisca (Morong) Greene 

 in Illustrated flora, but the name required by the law of priority is here 

 adopted. Dr Morong says that the species is intermediate between 

 N. advena and N. Kalmiana. that it is produced from a hybrid between 

 them and that it still is a hybrid in many localities. He gives it as an 

 example of a good species developed from a hybrid. The Manual, 

 though making it a variety of N. aovena, admits the probability of its 

 being a hybrid between that species and A r . Kalmiana. 



In the Synoptical flora the statement is made that it is with little doubt 

 of hybrid origin and that it is frequently associated with the parent 

 plants, growing in more shallow water than N. advena and often showing 

 imperfect pollen, as though only partially fertile. I have found it in 

 water from 2 to 6 ft deep. 



