NEW ENGLAND PEKSICAEIAS. 109 



but on all the sterile plants it is fairly developed. 



The second collection is a copious one, showing wide diversity 

 of foliage, pubescence, and ocrea-rim, and, most welcome of all, 

 some aquatic stems with floating foliage ; this a new thing for 

 P. Hartwrightii. The locality and conditions are thus de- 

 scribed : "Shuttle Meadow Lake is a body of water some 200 

 acres in extent, owned by the city of New Britain and used for 

 municipal purposes. In one section are several small colonies 

 of this plant, all on dry ground, growing with other vegetation, 

 but within reach of high water. No plants were seen, either on 

 the muddy shores that were two or three rods away, or in the 

 water. You will notice that some of the stems have leaves of a 

 different form, but nothing like the floating leaves of other 

 localities." 



In the ample series from this station, while there are flower- 

 ing stems with well developed herbaceous border to the stipule, 

 there are others in which it is much reduced, and some in which 

 it completely fails ; and, while all these Connecticut specimens 

 are much farther from being glabrous than are the originals 

 from the New York habitat, and in so far approach P. abscissa^ 

 yet I doubt, now, altogether, the validity of that species. 



The specimens to which Mr. Andrews adverts as having dif- 

 ferent leaves were certainly, at an earlier date and when the 

 lake was higher, submersed as to their stems, and the leaves 

 floating ; and these leaves that once floated have the long slen- 

 der petioles and glabrous shining blades usual to this state ; but 

 here in P. Hartwrightii such foliage tapers to the petiole, in- 

 stead of being truncate or subcordate as in the aquatic state of 

 every other known to me. 



P. Andrewsii. flowering stems a foot high, upright, but 

 from a prostrate base that takes root at the nodes : leaves 

 ascending on short petioles, not large, mostly 3 or 4 inches long, 

 exactly lanceolate, acute, rather flrm, glabrous above, or else 

 scabrous toward the margin, this always scabrous, as also the 

 mid vein beneath, with short appressed hair -points ; ocreae rim- 

 less, rough with a short strigose hairiness: spike mostly solitary, 



